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PR6 Clarification

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Jim AB3CV

PR6 Clarification

I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting ready to
order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the tower
then about 40ft of Buryflex in the tower run and various pigtails. So my
feedline losses should be relatively low.

Based on various threads I've decided to go ahead and get the PR6 but want
to make sure I understand how to use it. It appears that it is bypassed
completely by the K3 on the transmit path to the KPA100 which then goes to
the KPA500 and KAT500 then to the antenna.

On receive the path back from the KPA/KAT is passed thru the PR6
automatically as long as it is powered and the RXAnt is selected for 6m.

So no fancy additional cabling required other than Power/Digout1 and the
RXin/RXout pair.

My Beverages will just connect now through the PR6 supplied input.

All good?

Jim ab3cv
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W7GJ, Lance

Re: PR6 Clarification

Sounds good! I would suggest ordering the largest 6m yagi you can fit on your
tower. If a 6M5XHP is the largest you can swing around, then you should still do
very well on multi Es from your prime location there on the East Coast! I hope you
can get it all running next month so you are ready for DX by June 1!
It also looks like you have a clear shot (no ground clutter) to the west, so please
let me know when you are set up with the new yagi and PR6 and I would be happy to run
a JT65A mode sked with you during your moonset ;-) GL and VY 73, Lance

On 4/15/2013 9:50 PM, Jim Miller wrote:

> I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting ready to
> order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the tower
> then about 40ft of Buryflex in the tower run and various pigtails. So my
> feedline losses should be relatively low.
>
> Based on various threads I've decided to go ahead and get the PR6 but want
> to make sure I understand how to use it. It appears that it is bypassed
> completely by the K3 on the transmit path to the KPA100 which then goes to
> the KPA500 and KAT500 then to the antenna.
>
> On receive the path back from the KPA/KAT is passed thru the PR6
> automatically as long as it is powered and the RXAnt is selected for 6m.
>
> So no fancy additional cabling required other than Power/Digout1 and the
> RXin/RXout pair.
>
> My Beverages will just connect now through the PR6 supplied input.
>
> All good?
>
> Jim ab3cv
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

--
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M)
P.O. Box 73
Frenchtown, MT 59834-0073
USA
TEL: (406) 626-5728
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Windows Messenger: [hidden email]
Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

Interested in 6m EME? Ask me about subscribing to the Magic Band EME
email group, or just fill in the request box at the bottom of my web
page (above)!

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Terry Posey

Re: PR6 Clarification

In reply to this post by Jim AB3CV

Hi Jim -

You are well on your way to 6m success with the K3/KPA500/KAT500/PR6 line
up. However, there is one more issue you will need to address in your
cabling system. The K3's Digout1 signal is asserted on the PIN 11 of the
AUX cable. That presents a conflict with the KPA500 INHIBIT on PIN 11 on
the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11 needs to be
"interrupted" before passing the Digout1 signal onto the KPA500 and KAT500,
yet still sending the PIN 11 Digout1 signal to the PR6.

I purchased a HD15 male/female "port saver" adapter from the Web ($5) and
removed PIN 11 with pliers. Install the "Y" cable at the K3 ACC port, then
connect the PR6 to one side of the "Y" cable. Install the PIN 11
interrupter "port saver" adapter on the other side of the "Y" cable and
attach the HD15 cable connections to the KPA500 and the KAT500.

I hope this helps.

73,
Terry K4RX

I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting ready to
order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the tower
then about 40ft of Buryflex in the tower run and various pigtails. So my
feedline losses should be relatively low.

Based on various threads I've decided to go ahead and get the PR6 but want
to make sure I understand how to use it. It appears that it is bypassed
completely by the K3 on the transmit path to the KPA100 which then goes to
the KPA500 and KAT500 then to the antenna.

On receive the path back from the KPA/KAT is passed thru the PR6
automatically as long as it is powered and the RXAnt is selected for 6m.

So no fancy additional cabling required other than Power/Digout1 and the
RXin/RXout pair.

My Beverages will just connect now through the PR6 supplied input.

All good?

Jim ab3cv

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Help: http://mailman.qth.net/mmfaq.htm
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Jim AB3CV

Re: PR6 Clarification

I believe the Key line interrupter interrupts pin 10 rather than pin 11
after reviewing the K3 and KPA manual. I don't use the Pin 11 option on the
KPA (it's disabled) rather use the keyline interrupter and RCA jack cabling
to interface all the keying interruption which includes my antenna switch.

Thanks for your concern and don't hesitate to correct me if I've made an
incorrect assessment.

73

jim ab3cv

On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey <[hidden email]> wrote:

> Hi Jim -
>
> You are well on your way to 6m success with the K3/KPA500/KAT500/PR6 line
> up. However, there is one more issue you will need to address in your
> cabling system. The K3's Digout1 signal is asserted on the PIN 11 of the
> AUX cable. That presents a conflict with the KPA500 INHIBIT on PIN 11 on
> the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11 needs to be
> "interrupted" before passing the Digout1 signal onto the KPA500 and KAT500,
> yet still sending the PIN 11 Digout1 signal to the PR6.
>
> I purchased a HD15 male/female "port saver" adapter from the Web ($5) and
> removed PIN 11 with pliers. Install the "Y" cable at the K3 ACC port, then
> connect the PR6 to one side of the "Y" cable. Install the PIN 11
> interrupter "port saver" adapter on the other side of the "Y" cable and
> attach the HD15 cable connections to the KPA500 and the KAT500.
>
> I hope this helps.
>
> 73,
> Terry K4RX
>
>
> I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting ready to
> order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the tower
> then about 40ft of Buryflex in the tower run and various pigtails. So my
> feedline losses should be relatively low.
>
> Based on various threads I've decided to go ahead and get the PR6 but want
> to make sure I understand how to use it. It appears that it is bypassed
> completely by the K3 on the transmit path to the KPA100 which then goes to
> the KPA500 and KAT500 then to the antenna.
>
> On receive the path back from the KPA/KAT is passed thru the PR6
> automatically as long as it is powered and the RXAnt is selected for 6m.
>
> So no fancy additional cabling required other than Power/Digout1 and the
> RXin/RXout pair.
>
> My Beverages will just connect now through the PR6 supplied input.
>
> All good?
>
> Jim ab3cv
>
>
>

Cady, Fred

Re: PR6 Clarification

K4RX's inhibit line inhibiter for pin 11 is the same idea as the keyline inhibiter for pin 10. However, it is not really needed because one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11 will not inhibit the amp accomplishing the same thing as pulling pin 11 from the connector. Of course pulling the pin is a fail-safe solution. What is really needed is some logic that blocks pin 11 from the KPA for 6m (assuming you want the amp on for 6) and passes it for the other bands. That way you could inhibit the amp on, say, 30 m or other bands where there might not be a good match. I worked up a circuit to do this once upon a time and should dust it off again.
73,
Fred

Fred Cady
fcady at ieee dot org
"The Elecraft K3: Design, Configuration, and Operation Second Edition"

BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this month and 15% off (POURING) until April 19th.

> -----Original Message-----
> From: [hidden email] [mailto:elecraft-
> [hidden email]] On Behalf Of Jim Miller
> Sent: Monday, April 15, 2013 7:25 PM
> To: Terry Posey
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] PR6 Clarification
>
> I believe the Key line interrupter interrupts pin 10 rather than pin 11
> after reviewing the K3 and KPA manual. I don't use the Pin 11 option on
> the
> KPA (it's disabled) rather use the keyline interrupter and RCA jack
> cabling
> to interface all the keying interruption which includes my antenna
> switch.
>
> Thanks for your concern and don't hesitate to correct me if I've made
> an
> incorrect assessment.
>
> 73
>
> jim ab3cv
>
>
> On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey <[hidden email]>
> wrote:
>
> > Hi Jim -
> >
> > You are well on your way to 6m success with the K3/KPA500/KAT500/PR6
> line
> > up. However, there is one more issue you will need to address in
> your
> > cabling system. The K3's Digout1 signal is asserted on the PIN 11 of
> the
> > AUX cable. That presents a conflict with the KPA500 INHIBIT on PIN
> 11 on
> > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11 needs
> to be
> > "interrupted" before passing the Digout1 signal onto the KPA500 and
> KAT500,
> > yet still sending the PIN 11 Digout1 signal to the PR6.
> >
> > I purchased a HD15 male/female "port saver" adapter from the Web ($5)
> and
> > removed PIN 11 with pliers. Install the "Y" cable at the K3 ACC
> port, then
> > connect the PR6 to one side of the "Y" cable. Install the PIN 11
> > interrupter "port saver" adapter on the other side of the "Y" cable
> and
> > attach the HD15 cable connections to the KPA500 and the KAT500.
> >
> > I hope this helps.
> >
> > 73,
> > Terry K4RX
> >
> >
> > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting
> ready to
> > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the
> tower
> > then about 40ft of Buryflex in the tower run and various pigtails. So
> my
> > feedline losses should be relatively low.
> >
> > Based on various threads I've decided to go ahead and get the PR6 but
> want
> > to make sure I understand how to use it. It appears that it is
> bypassed
> > completely by the K3 on the transmit path to the KPA100 which then
> goes to
> > the KPA500 and KAT500 then to the antenna.
> >
> > On receive the path back from the KPA/KAT is passed thru the PR6
> > automatically as long as it is powered and the RXAnt is selected for
> 6m.
> >
> > So no fancy additional cabling required other than Power/Digout1 and
> the
> > RXin/RXout pair.
> >
> > My Beverages will just connect now through the PR6 supplied input.
> >
> > All good?
> >
> > Jim ab3cv
> >
> >
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Cady, Fred

Re: PR6 Clarification

Ahh, looking back at my notes I see the other solution would be to make the KPA500 INHIBIT IN be per/band. But you would still have to take care of not turning on the PR6 when DIGOUT1 is low with some external logic if you cared about that.

KE7X

Fred Cady
fcady at ieee dot org

> -----Original Message-----
> From: [hidden email] [mailto:elecraft-
> [hidden email]] On Behalf Of Cady, Fred
> Sent: Monday, April 15, 2013 7:42 PM
> To: 'Elecraft Reflector'
> Subject: Re: [Elecraft] PR6 Clarification
>
> K4RX's inhibit line inhibiter for pin 11 is the same idea as the
> keyline inhibiter for pin 10. However, it is not really needed because
> one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11 will
> not inhibit the amp accomplishing the same thing as pulling pin 11 from
> the connector. Of course pulling the pin is a fail-safe solution. What
> is really needed is some logic that blocks pin 11 from the KPA for 6m
> (assuming you want the amp on for 6) and passes it for the other bands.
> That way you could inhibit the amp on, say, 30 m or other bands where
> there might not be a good match. I worked up a circuit to do this once
> upon a time and should dust it off again.
> 73,
> Fred
>
>
> Fred Cady
> fcady at ieee dot org
> "The Elecraft K3: Design, Configuration, and Operation Second Edition"
>
> BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this month and
> 15% off (POURING) until April 19th.
>
> > -----Original Message-----
> > From: [hidden email] [mailto:elecraft-
> > [hidden email]] On Behalf Of Jim Miller
> > Sent: Monday, April 15, 2013 7:25 PM
> > To: Terry Posey
> > Cc: Elecraft Reflector
> > Subject: Re: [Elecraft] PR6 Clarification
> >
> > I believe the Key line interrupter interrupts pin 10 rather than pin
> 11
> > after reviewing the K3 and KPA manual. I don't use the Pin 11 option
> on
> > the
> > KPA (it's disabled) rather use the keyline interrupter and RCA jack
> > cabling
> > to interface all the keying interruption which includes my antenna
> > switch.
> >
> > Thanks for your concern and don't hesitate to correct me if I've made
> > an
> > incorrect assessment.
> >
> > 73
> >
> > jim ab3cv
> >
> >
> > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey <[hidden email]>
> > wrote:
> >
> > > Hi Jim -
> > >
> > > You are well on your way to 6m success with the
> K3/KPA500/KAT500/PR6
> > line
> > > up. However, there is one more issue you will need to address in
> > your
> > > cabling system. The K3's Digout1 signal is asserted on the PIN 11
> of
> > the
> > > AUX cable. That presents a conflict with the KPA500 INHIBIT on PIN
> > 11 on
> > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11
> needs
> > to be
> > > "interrupted" before passing the Digout1 signal onto the KPA500 and
> > KAT500,
> > > yet still sending the PIN 11 Digout1 signal to the PR6.
> > >
> > > I purchased a HD15 male/female "port saver" adapter from the Web
> ($5)
> > and
> > > removed PIN 11 with pliers. Install the "Y" cable at the K3 ACC
> > port, then
> > > connect the PR6 to one side of the "Y" cable. Install the PIN 11
> > > interrupter "port saver" adapter on the other side of the "Y" cable
> > and
> > > attach the HD15 cable connections to the KPA500 and the KAT500.
> > >
> > > I hope this helps.
> > >
> > > 73,
> > > Terry K4RX
> > >
> > >
> > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting
> > ready to
> > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the
> > tower
> > > then about 40ft of Buryflex in the tower run and various pigtails.
> So
> > my
> > > feedline losses should be relatively low.
> > >
> > > Based on various threads I've decided to go ahead and get the PR6
> but
> > want
> > > to make sure I understand how to use it. It appears that it is
> > bypassed
> > > completely by the K3 on the transmit path to the KPA100 which then
> > goes to
> > > the KPA500 and KAT500 then to the antenna.
> > >
> > > On receive the path back from the KPA/KAT is passed thru the PR6
> > > automatically as long as it is powered and the RXAnt is selected
> for
> > 6m.
> > >
> > > So no fancy additional cabling required other than Power/Digout1
> and
> > the
> > > RXin/RXout pair.
> > >
> > > My Beverages will just connect now through the PR6 supplied input.
> > >
> > > All good?
> > >
> > > Jim ab3cv
> > >
> > >
> > >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Jim AB3CV

Re: PR6 Clarification

I'm not getting the importance of a Pin 11 solution. I just disable the
KPA500 sensing of that pin by the menu selection. I don't see the need for
it.

I'm definitely running the KPA500 on 6m.

If for some strange reason Pin 11 is asserted it just causes the KPA500 to
be inhibited, not turned on, which is a failsafe direction.

73

jim ab3cv

On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred <[hidden email]> wrote:

> Ahh, looking back at my notes I see the other solution would be to make
> the KPA500 INHIBIT IN be per/band. But you would still have to take care of
> not turning on the PR6 when DIGOUT1 is low with some external logic if you
> cared about that.
>
> KE7X
>
> Fred Cady
> fcady at ieee dot org
>
> > -----Original Message-----
> > From: [hidden email] [mailto:elecraft-
> > [hidden email]] On Behalf Of Cady, Fred
> > Sent: Monday, April 15, 2013 7:42 PM
> > To: 'Elecraft Reflector'
> > Subject: Re: [Elecraft] PR6 Clarification
> >
> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
> > keyline inhibiter for pin 10. However, it is not really needed because
> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11 will
> > not inhibit the amp accomplishing the same thing as pulling pin 11 from
> > the connector. Of course pulling the pin is a fail-safe solution. What
> > is really needed is some logic that blocks pin 11 from the KPA for 6m
> > (assuming you want the amp on for 6) and passes it for the other bands.
> > That way you could inhibit the amp on, say, 30 m or other bands where
> > there might not be a good match. I worked up a circuit to do this once
> > upon a time and should dust it off again.
> > 73,
> > Fred
> >
> >
> > Fred Cady
> > fcady at ieee dot org
> > "The Elecraft K3: Design, Configuration, and Operation Second Edition"
> >
> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this month and
> > 15% off (POURING) until April 19th.
> >
> > > -----Original Message-----
> > > From: [hidden email] [mailto:elecraft-
> > > [hidden email]] On Behalf Of Jim Miller
> > > Sent: Monday, April 15, 2013 7:25 PM
> > > To: Terry Posey
> > > Cc: Elecraft Reflector
> > > Subject: Re: [Elecraft] PR6 Clarification
> > >
> > > I believe the Key line interrupter interrupts pin 10 rather than pin
> > 11
> > > after reviewing the K3 and KPA manual. I don't use the Pin 11 option
> > on
> > > the
> > > KPA (it's disabled) rather use the keyline interrupter and RCA jack
> > > cabling
> > > to interface all the keying interruption which includes my antenna
> > > switch.
> > >
> > > Thanks for your concern and don't hesitate to correct me if I've made
> > > an
> > > incorrect assessment.
> > >
> > > 73
> > >
> > > jim ab3cv
> > >
> > >
> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey <[hidden email]>
> > > wrote:
> > >
> > > > Hi Jim -
> > > >
> > > > You are well on your way to 6m success with the
> > K3/KPA500/KAT500/PR6
> > > line
> > > > up. However, there is one more issue you will need to address in
> > > your
> > > > cabling system. The K3's Digout1 signal is asserted on the PIN 11
> > of
> > > the
> > > > AUX cable. That presents a conflict with the KPA500 INHIBIT on PIN
> > > 11 on
> > > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11
> > needs
> > > to be
> > > > "interrupted" before passing the Digout1 signal onto the KPA500 and
> > > KAT500,
> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
> > > >
> > > > I purchased a HD15 male/female "port saver" adapter from the Web
> > ($5)
> > > and
> > > > removed PIN 11 with pliers. Install the "Y" cable at the K3 ACC
> > > port, then
> > > > connect the PR6 to one side of the "Y" cable. Install the PIN 11
> > > > interrupter "port saver" adapter on the other side of the "Y" cable
> > > and
> > > > attach the HD15 cable connections to the KPA500 and the KAT500.
> > > >
> > > > I hope this helps.
> > > >
> > > > 73,
> > > > Terry K4RX
> > > >
> > > >
> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting
> > > ready to
> > > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the
> > > tower
> > > > then about 40ft of Buryflex in the tower run and various pigtails.
> > So
> > > my
> > > > feedline losses should be relatively low.
> > > >
> > > > Based on various threads I've decided to go ahead and get the PR6
> > but
> > > want
> > > > to make sure I understand how to use it. It appears that it is
> > > bypassed
> > > > completely by the K3 on the transmit path to the KPA100 which then
> > > goes to
> > > > the KPA500 and KAT500 then to the antenna.
> > > >
> > > > On receive the path back from the KPA/KAT is passed thru the PR6
> > > > automatically as long as it is powered and the RXAnt is selected
> > for
> > > 6m.
> > > >
> > > > So no fancy additional cabling required other than Power/Digout1
> > and
> > > the
> > > > RXin/RXout pair.
> > > >
> > > > My Beverages will just connect now through the PR6 supplied input.
> > > >
> > > > All good?
> > > >
> > > > Jim ab3cv
> > > >
> > > >
> > > >
> > > ______________________________________________________________
> > > Elecraft mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > > Help: http://mailman.qth.net/mmfaq.htm
> > > Post: mailto:[hidden email]
> > >
> > > This list hosted by: http://www.qsl.net
> > > Please help support this email list: http://www.qsl.net/donate.html
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>

Cady, Fred

Re: PR6 Clarification

Hi Jim,
What I'd like to be able to do is to disable the amp on some bands (e.g. 30 m), by asserting (low) DIGOUT1 (and setting KPA500 INHIB IN to ENABLE) but to have the amp enabled for 6m when DIGOUT1 is low to turn on the PR6. I'm just lazy, that's all. Plus it's fun to think about!
Cheers,
Fred

Fred Cady
fcady at ieee dot org
From: [hidden email] [mailto:[hidden email]] On Behalf Of Jim Miller
Sent: Monday, April 15, 2013 8:52 PM
To: Cady, Fred
Cc: Elecraft Reflector
Subject: Re: [Elecraft] PR6 Clarification

I'm not getting the importance of a Pin 11 solution. I just disable the KPA500 sensing of that pin by the menu selection. I don't see the need for it.

I'm definitely running the KPA500 on 6m.

If for some strange reason Pin 11 is asserted it just causes the KPA500 to be inhibited, not turned on, which is a failsafe direction.

73

jim ab3cv

On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred <[hidden email]<mailto:[hidden email]>> wrote:
Ahh, looking back at my notes I see the other solution would be to make the KPA500 INHIBIT IN be per/band. But you would still have to take care of not turning on the PR6 when DIGOUT1 is low with some external logic if you cared about that.

KE7X

Fred Cady
fcady at ieee dot org

> -----Original Message-----
> From: [hidden email]<mailto:[hidden email]> [mailto:elecraft-<mailto:elecraft->
> [hidden email]<mailto:[hidden email]>] On Behalf Of Cady, Fred
> Sent: Monday, April 15, 2013 7:42 PM
> To: 'Elecraft Reflector'
> Subject: Re: [Elecraft] PR6 Clarification
>
> K4RX's inhibit line inhibiter for pin 11 is the same idea as the
> keyline inhibiter for pin 10. However, it is not really needed because
> one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11 will
> not inhibit the amp accomplishing the same thing as pulling pin 11 from
> the connector. Of course pulling the pin is a fail-safe solution. What
> is really needed is some logic that blocks pin 11 from the KPA for 6m
> (assuming you want the amp on for 6) and passes it for the other bands.
> That way you could inhibit the amp on, say, 30 m or other bands where
> there might not be a good match. I worked up a circuit to do this once
> upon a time and should dust it off again.
> 73,
> Fred
>
>
> Fred Cady
> fcady at ieee dot org
> "The Elecraft K3: Design, Configuration, and Operation Second Edition"
>
> BTW, www.Lulu.com<http://www.Lulu.com> has a 20% discount (APRILBOOKS13) good this month and
> 15% off (POURING) until April 19th.
>
> > -----Original Message-----
> > From: [hidden email]<mailto:[hidden email]> [mailto:elecraft-<mailto:elecraft->
> > [hidden email]<mailto:[hidden email]>] On Behalf Of Jim Miller
> > Sent: Monday, April 15, 2013 7:25 PM
> > To: Terry Posey
> > Cc: Elecraft Reflector
> > Subject: Re: [Elecraft] PR6 Clarification
> >
> > I believe the Key line interrupter interrupts pin 10 rather than pin
> 11
> > after reviewing the K3 and KPA manual. I don't use the Pin 11 option
> on
> > the
> > KPA (it's disabled) rather use the keyline interrupter and RCA jack
> > cabling
> > to interface all the keying interruption which includes my antenna
> > switch.
> >
> > Thanks for your concern and don't hesitate to correct me if I've made
> > an
> > incorrect assessment.
> >
> > 73
> >
> > jim ab3cv
> >
> >
> > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey <[hidden email]<mailto:[hidden email]>>
> > wrote:
> >
> > > Hi Jim -
> > >
> > > You are well on your way to 6m success with the
> K3/KPA500/KAT500/PR6
> > line
> > > up. However, there is one more issue you will need to address in
> > your
> > > cabling system. The K3's Digout1 signal is asserted on the PIN 11
> of
> > the
> > > AUX cable. That presents a conflict with the KPA500 INHIBIT on PIN
> > 11 on
> > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11
> needs
> > to be
> > > "interrupted" before passing the Digout1 signal onto the KPA500 and
> > KAT500,
> > > yet still sending the PIN 11 Digout1 signal to the PR6.
> > >
> > > I purchased a HD15 male/female "port saver" adapter from the Web
> ($5)
> > and
> > > removed PIN 11 with pliers. Install the "Y" cable at the K3 ACC
> > port, then
> > > connect the PR6 to one side of the "Y" cable. Install the PIN 11
> > > interrupter "port saver" adapter on the other side of the "Y" cable
> > and
> > > attach the HD15 cable connections to the KPA500 and the KAT500.
> > >
> > > I hope this helps.
> > >
> > > 73,
> > > Terry K4RX
> > >
> > >
> > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting
> > ready to
> > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the
> > tower
> > > then about 40ft of Buryflex in the tower run and various pigtails.
> So
> > my
> > > feedline losses should be relatively low.
> > >
> > > Based on various threads I've decided to go ahead and get the PR6
> but
> > want
> > > to make sure I understand how to use it. It appears that it is
> > bypassed
> > > completely by the K3 on the transmit path to the KPA100 which then
> > goes to
> > > the KPA500 and KAT500 then to the antenna.
> > >
> > > On receive the path back from the KPA/KAT is passed thru the PR6
> > > automatically as long as it is powered and the RXAnt is selected
> for
> > 6m.
> > >
> > > So no fancy additional cabling required other than Power/Digout1
> and
> > the
> > > RXin/RXout pair.
> > >
> > > My Beverages will just connect now through the PR6 supplied input.
> > >
> > > All good?
> > >
> > > Jim ab3cv
> > >
> > >
> > >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]<mailto:[hidden email]>
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]<mailto:[hidden email]>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
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Jim Brown-10

Re: PR6 Clarification

In reply to this post by Jim AB3CV

On 4/15/2013 2:50 PM, Jim Miller wrote:
> I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting ready to
> order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the tower
> then about 40ft of Buryflex in the tower run and various pigtails. So my
> feedline losses should be relatively low.

I'm running a very similar setup, but with 350 ft of 7/8-in Heliax to a
3-el SteppIR with the added 6M element. The SteppIR works pretty well
on 6M, and the nature of my tower installation makes it impractical to
add a better one.

> Based on various threads I've decided to go ahead and get the PR6 but want
> to make sure I understand how to use it.

I've owned an ARR GasFET preamp for nearly 10 years, and added it at the
RX antenna patch point, with relays to switch between the preamp and my
Beverages, probably in the same manner that the PR6 does. My setup also
works fine. Yes, it would be about 1dB better at the top of the tower,
but it would cost me PLENTY to put it there, given that 99.5% of my
operation is very competitive contesting with full legal power. :)

I'm in a dense redwood forest, so EME is not in my future, at least at
home, but I've made lots of 2 and three hop Es QSOs, mostly CW, and some
pretty long MS QSOs with FSK441. One of the great things about the
KPA500 is that it's happy at full power (about 500W on 6M) on keydown
modes.

If you're running the 6M antenna through the KAT, be sure to put it on
the ANT1 output, which has the lowest return loss, and make sure there's
nothing else in the path that might be adding some return loss.

73, Jim K9YC
______________________________________________________________
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Post: mailto:[hidden email]

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Jim AB3CV

Re: PR6 Clarification

In reply to this post by Cady, Fred

It seems like it would be an easy thing to implement in the KPA500. Per
Band Standby.

73

jim ab3cv

On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred <[hidden email]> wrote:

> Hi Jim,****
>
> What I’d like to be able to do is to disable the amp on some bands (e.g.
> 30 m), by asserting (low) DIGOUT1 (and setting KPA500 INHIB IN to ENABLE)
> but to have the amp enabled for 6m when DIGOUT1 is low to turn on the PR6.
> I’m just lazy, that’s all. Plus it’s fun to think about!****
>
> Cheers,****
>
> Fred****
>
> ** **
>
> ** **
>
> Fred Cady
> fcady at ieee dot org ****
>
> *From:* [hidden email] [mailto:[hidden email]] *On Behalf Of *Jim
> Miller
> *Sent:* Monday, April 15, 2013 8:52 PM
> *To:* Cady, Fred
>
> *Cc:* Elecraft Reflector
> *Subject:* Re: [Elecraft] PR6 Clarification****
>
> ** **
>
> I'm not getting the importance of a Pin 11 solution. I just disable the
> KPA500 sensing of that pin by the menu selection. I don't see the need for
> it.****
>
> ****
>
> I'm definitely running the KPA500 on 6m.****
>
> ****
>
> If for some strange reason Pin 11 is asserted it just causes the KPA500 to
> be inhibited, not turned on, which is a failsafe direction.****
>
> ****
>
> 73****
>
> ****
>
> jim ab3cv****
>
> ** **
>
> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred <[hidden email]> wrote:
> ****
>
> Ahh, looking back at my notes I see the other solution would be to make
> the KPA500 INHIBIT IN be per/band. But you would still have to take care of
> not turning on the PR6 when DIGOUT1 is low with some external logic if you
> cared about that.
>
> KE7X****
>
>
> Fred Cady
> fcady at ieee dot org****
>
> > -----Original Message-----
> > From: [hidden email] [mailto:elecraft-****
>
> > [hidden email]] On Behalf Of Cady, Fred
> > Sent: Monday, April 15, 2013 7:42 PM
> > To: 'Elecraft Reflector'
> > Subject: Re: [Elecraft] PR6 Clarification
> >
> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
> > keyline inhibiter for pin 10. However, it is not really needed because
> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11 will
> > not inhibit the amp accomplishing the same thing as pulling pin 11 from
> > the connector. Of course pulling the pin is a fail-safe solution. What
> > is really needed is some logic that blocks pin 11 from the KPA for 6m
> > (assuming you want the amp on for 6) and passes it for the other bands.
> > That way you could inhibit the amp on, say, 30 m or other bands where
> > there might not be a good match. I worked up a circuit to do this once
> > upon a time and should dust it off again.
> > 73,
> > Fred
> >
> >
> > Fred Cady
> > fcady at ieee dot org
> > "The Elecraft K3: Design, Configuration, and Operation Second Edition"
> >
> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this month and
> > 15% off (POURING) until April 19th.
> >
> > > -----Original Message-----
> > > From: [hidden email] [mailto:elecraft-
> > > [hidden email]] On Behalf Of Jim Miller
> > > Sent: Monday, April 15, 2013 7:25 PM
> > > To: Terry Posey
> > > Cc: Elecraft Reflector
> > > Subject: Re: [Elecraft] PR6 Clarification
> > >
> > > I believe the Key line interrupter interrupts pin 10 rather than pin
> > 11
> > > after reviewing the K3 and KPA manual. I don't use the Pin 11 option
> > on
> > > the
> > > KPA (it's disabled) rather use the keyline interrupter and RCA jack
> > > cabling
> > > to interface all the keying interruption which includes my antenna
> > > switch.
> > >
> > > Thanks for your concern and don't hesitate to correct me if I've made
> > > an
> > > incorrect assessment.
> > >
> > > 73
> > >
> > > jim ab3cv
> > >
> > >
> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey <[hidden email]>
> > > wrote:
> > >
> > > > Hi Jim -
> > > >
> > > > You are well on your way to 6m success with the
> > K3/KPA500/KAT500/PR6
> > > line
> > > > up. However, there is one more issue you will need to address in
> > > your
> > > > cabling system. The K3's Digout1 signal is asserted on the PIN 11
> > of
> > > the
> > > > AUX cable. That presents a conflict with the KPA500 INHIBIT on PIN
> > > 11 on
> > > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11
> > needs
> > > to be
> > > > "interrupted" before passing the Digout1 signal onto the KPA500 and
> > > KAT500,
> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
> > > >
> > > > I purchased a HD15 male/female "port saver" adapter from the Web
> > ($5)
> > > and
> > > > removed PIN 11 with pliers. Install the "Y" cable at the K3 ACC
> > > port, then
> > > > connect the PR6 to one side of the "Y" cable. Install the PIN 11
> > > > interrupter "port saver" adapter on the other side of the "Y" cable
> > > and
> > > > attach the HD15 cable connections to the KPA500 and the KAT500.
> > > >
> > > > I hope this helps.
> > > >
> > > > 73,
> > > > Terry K4RX
> > > >
> > > >
> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting
> > > ready to
> > > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the
> > > tower
> > > > then about 40ft of Buryflex in the tower run and various pigtails.
> > So
> > > my
> > > > feedline losses should be relatively low.
> > > >
> > > > Based on various threads I've decided to go ahead and get the PR6
> > but
> > > want
> > > > to make sure I understand how to use it. It appears that it is
> > > bypassed
> > > > completely by the K3 on the transmit path to the KPA100 which then
> > > goes to
> > > > the KPA500 and KAT500 then to the antenna.
> > > >
> > > > On receive the path back from the KPA/KAT is passed thru the PR6
> > > > automatically as long as it is powered and the RXAnt is selected
> > for
> > > 6m.
> > > >
> > > > So no fancy additional cabling required other than Power/Digout1
> > and
> > > the
> > > > RXin/RXout pair.
> > > >
> > > > My Beverages will just connect now through the PR6 supplied input.
> > > >
> > > > All good?
> > > >
> > > > Jim ab3cv
> > > >
> > > >
> > > >
> > > ______________________________________________________________
> > > Elecraft mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > > Help: http://mailman.qth.net/mmfaq.htm
> > > Post: mailto:[hidden email]
> > >
> > > This list hosted by: http://www.qsl.net
> > > Please help support this email list: http://www.qsl.net/donate.html
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html****
>
> ** **
>

Iain MacDonnell - N6ML-2

Re: PR6 Clarification

On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller <[hidden email]> wrote:
> It seems like it would be an easy thing to implement in the KPA500. Per
> Band Standby.

Good idea - why didn't I think of it? Oh, wait, I did :)

http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-bypass-td6247211.html

Hasn't transpired so-far, though....

73,

~iain / N6ML

> On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred <[hidden email]> wrote:
>
>> Hi Jim,****
>>
>> What I’d like to be able to do is to disable the amp on some bands (e.g.
>> 30 m), by asserting (low) DIGOUT1 (and setting KPA500 INHIB IN to ENABLE)
>> but to have the amp enabled for 6m when DIGOUT1 is low to turn on the PR6.
>> I’m just lazy, that’s all. Plus it’s fun to think about!****
>>
>> Cheers,****
>>
>> Fred****
>>
>> ** **
>>
>> ** **
>>
>> Fred Cady
>> fcady at ieee dot org ****
>>
>> *From:* [hidden email] [mailto:[hidden email]] *On Behalf Of *Jim
>> Miller
>> *Sent:* Monday, April 15, 2013 8:52 PM
>> *To:* Cady, Fred
>>
>> *Cc:* Elecraft Reflector
>> *Subject:* Re: [Elecraft] PR6 Clarification****
>>
>> ** **
>>
>> I'm not getting the importance of a Pin 11 solution. I just disable the
>> KPA500 sensing of that pin by the menu selection. I don't see the need for
>> it.****
>>
>> ****
>>
>> I'm definitely running the KPA500 on 6m.****
>>
>> ****
>>
>> If for some strange reason Pin 11 is asserted it just causes the KPA500 to
>> be inhibited, not turned on, which is a failsafe direction.****
>>
>> ****
>>
>> 73****
>>
>> ****
>>
>> jim ab3cv****
>>
>> ** **
>>
>> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred <[hidden email]> wrote:
>> ****
>>
>> Ahh, looking back at my notes I see the other solution would be to make
>> the KPA500 INHIBIT IN be per/band. But you would still have to take care of
>> not turning on the PR6 when DIGOUT1 is low with some external logic if you
>> cared about that.
>>
>> KE7X****
>>
>>
>> Fred Cady
>> fcady at ieee dot org****
>>
>> > -----Original Message-----
>> > From: [hidden email] [mailto:elecraft-****
>>
>> > [hidden email]] On Behalf Of Cady, Fred
>> > Sent: Monday, April 15, 2013 7:42 PM
>> > To: 'Elecraft Reflector'
>> > Subject: Re: [Elecraft] PR6 Clarification
>> >
>> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
>> > keyline inhibiter for pin 10. However, it is not really needed because
>> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11 will
>> > not inhibit the amp accomplishing the same thing as pulling pin 11 from
>> > the connector. Of course pulling the pin is a fail-safe solution. What
>> > is really needed is some logic that blocks pin 11 from the KPA for 6m
>> > (assuming you want the amp on for 6) and passes it for the other bands.
>> > That way you could inhibit the amp on, say, 30 m or other bands where
>> > there might not be a good match. I worked up a circuit to do this once
>> > upon a time and should dust it off again.
>> > 73,
>> > Fred
>> >
>> >
>> > Fred Cady
>> > fcady at ieee dot org
>> > "The Elecraft K3: Design, Configuration, and Operation Second Edition"
>> >
>> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this month and
>> > 15% off (POURING) until April 19th.
>> >
>> > > -----Original Message-----
>> > > From: [hidden email] [mailto:elecraft-
>> > > [hidden email]] On Behalf Of Jim Miller
>> > > Sent: Monday, April 15, 2013 7:25 PM
>> > > To: Terry Posey
>> > > Cc: Elecraft Reflector
>> > > Subject: Re: [Elecraft] PR6 Clarification
>> > >
>> > > I believe the Key line interrupter interrupts pin 10 rather than pin
>> > 11
>> > > after reviewing the K3 and KPA manual. I don't use the Pin 11 option
>> > on
>> > > the
>> > > KPA (it's disabled) rather use the keyline interrupter and RCA jack
>> > > cabling
>> > > to interface all the keying interruption which includes my antenna
>> > > switch.
>> > >
>> > > Thanks for your concern and don't hesitate to correct me if I've made
>> > > an
>> > > incorrect assessment.
>> > >
>> > > 73
>> > >
>> > > jim ab3cv
>> > >
>> > >
>> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey <[hidden email]>
>> > > wrote:
>> > >
>> > > > Hi Jim -
>> > > >
>> > > > You are well on your way to 6m success with the
>> > K3/KPA500/KAT500/PR6
>> > > line
>> > > > up. However, there is one more issue you will need to address in
>> > > your
>> > > > cabling system. The K3's Digout1 signal is asserted on the PIN 11
>> > of
>> > > the
>> > > > AUX cable. That presents a conflict with the KPA500 INHIBIT on PIN
>> > > 11 on
>> > > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11
>> > needs
>> > > to be
>> > > > "interrupted" before passing the Digout1 signal onto the KPA500 and
>> > > KAT500,
>> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
>> > > >
>> > > > I purchased a HD15 male/female "port saver" adapter from the Web
>> > ($5)
>> > > and
>> > > > removed PIN 11 with pliers. Install the "Y" cable at the K3 ACC
>> > > port, then
>> > > > connect the PR6 to one side of the "Y" cable. Install the PIN 11
>> > > > interrupter "port saver" adapter on the other side of the "Y" cable
>> > > and
>> > > > attach the HD15 cable connections to the KPA500 and the KAT500.
>> > > >
>> > > > I hope this helps.
>> > > >
>> > > > 73,
>> > > > Terry K4RX
>> > > >
>> > > >
>> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting
>> > > ready to
>> > > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to the
>> > > tower
>> > > > then about 40ft of Buryflex in the tower run and various pigtails.
>> > So
>> > > my
>> > > > feedline losses should be relatively low.
>> > > >
>> > > > Based on various threads I've decided to go ahead and get the PR6
>> > but
>> > > want
>> > > > to make sure I understand how to use it. It appears that it is
>> > > bypassed
>> > > > completely by the K3 on the transmit path to the KPA100 which then
>> > > goes to
>> > > > the KPA500 and KAT500 then to the antenna.
>> > > >
>> > > > On receive the path back from the KPA/KAT is passed thru the PR6
>> > > > automatically as long as it is powered and the RXAnt is selected
>> > for
>> > > 6m.
>> > > >
>> > > > So no fancy additional cabling required other than Power/Digout1
>> > and
>> > > the
>> > > > RXin/RXout pair.
>> > > >
>> > > > My Beverages will just connect now through the PR6 supplied input.
>> > > >
>> > > > All good?
>> > > >
>> > > > Jim ab3cv
>> > > >
>> > > >
>> > > >
>> > > ______________________________________________________________
>> > > Elecraft mailing list
>> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> > > Help: http://mailman.qth.net/mmfaq.htm
>> > > Post: mailto:[hidden email]
>> > >
>> > > This list hosted by: http://www.qsl.net
>> > > Please help support this email list: http://www.qsl.net/donate.html
>> > ______________________________________________________________
>> > Elecraft mailing list
>> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> > Help: http://mailman.qth.net/mmfaq.htm
>> > Post: mailto:[hidden email]
>> >
>> > This list hosted by: http://www.qsl.net
>> > Please help support this email list: http://www.qsl.net/donate.html
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html****
>>
>> ** **
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Cady, Fred

Re: PR6 Clarification

Hey, Ian (and others),
What do you think about having the PR6 powered-up and controlled-on with DIGOUT1 while on another band with RX ANT not enabled? It looks like the PR6 input and outputs are floating. Do you think that is a problem for the PR6?

Fred

Fred Cady
fcady at ieee dot org

> -----Original Message-----
> From: [hidden email] [mailto:[hidden email]] On Behalf Of iain
> macdonnell - N6ML
> Sent: Tuesday, April 16, 2013 7:55 AM
> To: Jim Miller
> Cc: Cady, Fred; Elecraft Reflector
> Subject: Re: [Elecraft] PR6 Clarification
>
> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller <[hidden email]> wrote:
> > It seems like it would be an easy thing to implement in the KPA500.
> Per
> > Band Standby.
>
> Good idea - why didn't I think of it? Oh, wait, I did :)
>
> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
> bypass-td6247211.html
>
> Hasn't transpired so-far, though....
>
> 73,
>
> ~iain / N6ML
>
>
> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred <[hidden email]>
> wrote:
> >
> >> Hi Jim,****
> >>
> >> What I'd like to be able to do is to disable the amp on some bands
> (e.g.
> >> 30 m), by asserting (low) DIGOUT1 (and setting KPA500 INHIB IN to
> ENABLE)
> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
> the PR6.
> >> I'm just lazy, that's all. Plus it's fun to think about!****
> >>
> >> Cheers,****
> >>
> >> Fred****
> >>
> >> ** **
> >>
> >> ** **
> >>
> >> Fred Cady
> >> fcady at ieee dot org ****
> >>
> >> *From:* [hidden email] [mailto:[hidden email]] *On
> Behalf Of *Jim
> >> Miller
> >> *Sent:* Monday, April 15, 2013 8:52 PM
> >> *To:* Cady, Fred
> >>
> >> *Cc:* Elecraft Reflector
> >> *Subject:* Re: [Elecraft] PR6 Clarification****
> >>
> >> ** **
> >>
> >> I'm not getting the importance of a Pin 11 solution. I just disable
> the
> >> KPA500 sensing of that pin by the menu selection. I don't see the
> need for
> >> it.****
> >>
> >> ****
> >>
> >> I'm definitely running the KPA500 on 6m.****
> >>
> >> ****
> >>
> >> If for some strange reason Pin 11 is asserted it just causes the
> KPA500 to
> >> be inhibited, not turned on, which is a failsafe direction.****
> >>
> >> ****
> >>
> >> 73****
> >>
> >> ****
> >>
> >> jim ab3cv****
> >>
> >> ** **
> >>
> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred <[hidden email]>
> wrote:
> >> ****
> >>
> >> Ahh, looking back at my notes I see the other solution would be to
> make
> >> the KPA500 INHIBIT IN be per/band. But you would still have to take
> care of
> >> not turning on the PR6 when DIGOUT1 is low with some external logic
> if you
> >> cared about that.
> >>
> >> KE7X****
> >>
> >>
> >> Fred Cady
> >> fcady at ieee dot org****
> >>
> >> > -----Original Message-----
> >> > From: [hidden email] [mailto:elecraft-****
> >>
> >> > [hidden email]] On Behalf Of Cady, Fred
> >> > Sent: Monday, April 15, 2013 7:42 PM
> >> > To: 'Elecraft Reflector'
> >> > Subject: Re: [Elecraft] PR6 Clarification
> >> >
> >> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
> >> > keyline inhibiter for pin 10. However, it is not really needed
> because
> >> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11
> will
> >> > not inhibit the amp accomplishing the same thing as pulling pin 11
> from
> >> > the connector. Of course pulling the pin is a fail-safe solution.
> What
> >> > is really needed is some logic that blocks pin 11 from the KPA for
> 6m
> >> > (assuming you want the amp on for 6) and passes it for the other
> bands.
> >> > That way you could inhibit the amp on, say, 30 m or other bands
> where
> >> > there might not be a good match. I worked up a circuit to do this
> once
> >> > upon a time and should dust it off again.
> >> > 73,
> >> > Fred
> >> >
> >> >
> >> > Fred Cady
> >> > fcady at ieee dot org
> >> > "The Elecraft K3: Design, Configuration, and Operation Second
> Edition"
> >> >
> >> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this
> month and
> >> > 15% off (POURING) until April 19th.
> >> >
> >> > > -----Original Message-----
> >> > > From: [hidden email] [mailto:elecraft-
> >> > > [hidden email]] On Behalf Of Jim Miller
> >> > > Sent: Monday, April 15, 2013 7:25 PM
> >> > > To: Terry Posey
> >> > > Cc: Elecraft Reflector
> >> > > Subject: Re: [Elecraft] PR6 Clarification
> >> > >
> >> > > I believe the Key line interrupter interrupts pin 10 rather than
> pin
> >> > 11
> >> > > after reviewing the K3 and KPA manual. I don't use the Pin 11
> option
> >> > on
> >> > > the
> >> > > KPA (it's disabled) rather use the keyline interrupter and RCA
> jack
> >> > > cabling
> >> > > to interface all the keying interruption which includes my
> antenna
> >> > > switch.
> >> > >
> >> > > Thanks for your concern and don't hesitate to correct me if I've
> made
> >> > > an
> >> > > incorrect assessment.
> >> > >
> >> > > 73
> >> > >
> >> > > jim ab3cv
> >> > >
> >> > >
> >> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey
> <[hidden email]>
> >> > > wrote:
> >> > >
> >> > > > Hi Jim -
> >> > > >
> >> > > > You are well on your way to 6m success with the
> >> > K3/KPA500/KAT500/PR6
> >> > > line
> >> > > > up. However, there is one more issue you will need to address
> in
> >> > > your
> >> > > > cabling system. The K3's Digout1 signal is asserted on the
> PIN 11
> >> > of
> >> > > the
> >> > > > AUX cable. That presents a conflict with the KPA500 INHIBIT
> on PIN
> >> > > 11 on
> >> > > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11
> >> > needs
> >> > > to be
> >> > > > "interrupted" before passing the Digout1 signal onto the
> KPA500 and
> >> > > KAT500,
> >> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
> >> > > >
> >> > > > I purchased a HD15 male/female "port saver" adapter from the
> Web
> >> > ($5)
> >> > > and
> >> > > > removed PIN 11 with pliers. Install the "Y" cable at the K3
> ACC
> >> > > port, then
> >> > > > connect the PR6 to one side of the "Y" cable. Install the PIN
> 11
> >> > > > interrupter "port saver" adapter on the other side of the "Y"
> cable
> >> > > and
> >> > > > attach the HD15 cable connections to the KPA500 and the
> KAT500.
> >> > > >
> >> > > > I hope this helps.
> >> > > >
> >> > > > 73,
> >> > > > Terry K4RX
> >> > > >
> >> > > >
> >> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm
> getting
> >> > > ready to
> >> > > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to
> the
> >> > > tower
> >> > > > then about 40ft of Buryflex in the tower run and various
> pigtails.
> >> > So
> >> > > my
> >> > > > feedline losses should be relatively low.
> >> > > >
> >> > > > Based on various threads I've decided to go ahead and get the
> PR6
> >> > but
> >> > > want
> >> > > > to make sure I understand how to use it. It appears that it is
> >> > > bypassed
> >> > > > completely by the K3 on the transmit path to the KPA100 which
> then
> >> > > goes to
> >> > > > the KPA500 and KAT500 then to the antenna.
> >> > > >
> >> > > > On receive the path back from the KPA/KAT is passed thru the
> PR6
> >> > > > automatically as long as it is powered and the RXAnt is
> selected
> >> > for
> >> > > 6m.
> >> > > >
> >> > > > So no fancy additional cabling required other than
> Power/Digout1
> >> > and
> >> > > the
> >> > > > RXin/RXout pair.
> >> > > >
> >> > > > My Beverages will just connect now through the PR6 supplied
> input.
> >> > > >
> >> > > > All good?
> >> > > >
> >> > > > Jim ab3cv
> >> > > >
> >> > > >
> >> > > >
> >> > > ______________________________________________________________
> >> > > Elecraft mailing list
> >> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> > > Help: http://mailman.qth.net/mmfaq.htm
> >> > > Post: mailto:[hidden email]
> >> > >
> >> > > This list hosted by: http://www.qsl.net
> >> > > Please help support this email list:
> http://www.qsl.net/donate.html
> >> > ______________________________________________________________
> >> > Elecraft mailing list
> >> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> > Help: http://mailman.qth.net/mmfaq.htm
> >> > Post: mailto:[hidden email]
> >> >
> >> > This list hosted by: http://www.qsl.net
> >> > Please help support this email list:
> http://www.qsl.net/donate.html
> >> ______________________________________________________________
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:[hidden email]
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list:
> http://www.qsl.net/donate.html****
> >>
> >> ** **
> >>
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html

Iain MacDonnell - N6ML-2

Re: PR6 Clarification

Hi Fred,

I'm not sure I completely understand your question, but my PR6 is on
all the time (it is not connected to the K3's ACC port), and I just
use RX ANT on 6m to bring it in-line. This is not a problem for me,
since I do not have any other RX ants that I need to feed through the
PR6 for other bands. AFAIK, this is a "supported configuration".

73,

~iain / N6ML

On Tue, Apr 16, 2013 at 7:44 AM, Cady, Fred <[hidden email]> wrote:

> Hey, Ian (and others),
> What do you think about having the PR6 powered-up and controlled-on with DIGOUT1 while on another band with RX ANT not enabled? It looks like the PR6 input and outputs are floating. Do you think that is a problem for the PR6?
>
> Fred
>
>
> Fred Cady
> fcady at ieee dot org
>
>> -----Original Message-----
>> From: [hidden email] [mailto:[hidden email]] On Behalf Of iain
>> macdonnell - N6ML
>> Sent: Tuesday, April 16, 2013 7:55 AM
>> To: Jim Miller
>> Cc: Cady, Fred; Elecraft Reflector
>> Subject: Re: [Elecraft] PR6 Clarification
>>
>> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller <[hidden email]> wrote:
>> > It seems like it would be an easy thing to implement in the KPA500.
>> Per
>> > Band Standby.
>>
>> Good idea - why didn't I think of it? Oh, wait, I did :)
>>
>> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
>> bypass-td6247211.html
>>
>> Hasn't transpired so-far, though....
>>
>> 73,
>>
>> ~iain / N6ML
>>
>>
>> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred <[hidden email]>
>> wrote:
>> >
>> >> Hi Jim,****
>> >>
>> >> What I'd like to be able to do is to disable the amp on some bands
>> (e.g.
>> >> 30 m), by asserting (low) DIGOUT1 (and setting KPA500 INHIB IN to
>> ENABLE)
>> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
>> the PR6.
>> >> I'm just lazy, that's all. Plus it's fun to think about!****
>> >>
>> >> Cheers,****
>> >>
>> >> Fred****
>> >>
>> >> ** **
>> >>
>> >> ** **
>> >>
>> >> Fred Cady
>> >> fcady at ieee dot org ****
>> >>
>> >> *From:* [hidden email] [mailto:[hidden email]] *On
>> Behalf Of *Jim
>> >> Miller
>> >> *Sent:* Monday, April 15, 2013 8:52 PM
>> >> *To:* Cady, Fred
>> >>
>> >> *Cc:* Elecraft Reflector
>> >> *Subject:* Re: [Elecraft] PR6 Clarification****
>> >>
>> >> ** **
>> >>
>> >> I'm not getting the importance of a Pin 11 solution. I just disable
>> the
>> >> KPA500 sensing of that pin by the menu selection. I don't see the
>> need for
>> >> it.****
>> >>
>> >> ****
>> >>
>> >> I'm definitely running the KPA500 on 6m.****
>> >>
>> >> ****
>> >>
>> >> If for some strange reason Pin 11 is asserted it just causes the
>> KPA500 to
>> >> be inhibited, not turned on, which is a failsafe direction.****
>> >>
>> >> ****
>> >>
>> >> 73****
>> >>
>> >> ****
>> >>
>> >> jim ab3cv****
>> >>
>> >> ** **
>> >>
>> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred <[hidden email]>
>> wrote:
>> >> ****
>> >>
>> >> Ahh, looking back at my notes I see the other solution would be to
>> make
>> >> the KPA500 INHIBIT IN be per/band. But you would still have to take
>> care of
>> >> not turning on the PR6 when DIGOUT1 is low with some external logic
>> if you
>> >> cared about that.
>> >>
>> >> KE7X****
>> >>
>> >>
>> >> Fred Cady
>> >> fcady at ieee dot org****
>> >>
>> >> > -----Original Message-----
>> >> > From: [hidden email] [mailto:elecraft-****
>> >>
>> >> > [hidden email]] On Behalf Of Cady, Fred
>> >> > Sent: Monday, April 15, 2013 7:42 PM
>> >> > To: 'Elecraft Reflector'
>> >> > Subject: Re: [Elecraft] PR6 Clarification
>> >> >
>> >> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
>> >> > keyline inhibiter for pin 10. However, it is not really needed
>> because
>> >> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11
>> will
>> >> > not inhibit the amp accomplishing the same thing as pulling pin 11
>> from
>> >> > the connector. Of course pulling the pin is a fail-safe solution.
>> What
>> >> > is really needed is some logic that blocks pin 11 from the KPA for
>> 6m
>> >> > (assuming you want the amp on for 6) and passes it for the other
>> bands.
>> >> > That way you could inhibit the amp on, say, 30 m or other bands
>> where
>> >> > there might not be a good match. I worked up a circuit to do this
>> once
>> >> > upon a time and should dust it off again.
>> >> > 73,
>> >> > Fred
>> >> >
>> >> >
>> >> > Fred Cady
>> >> > fcady at ieee dot org
>> >> > "The Elecraft K3: Design, Configuration, and Operation Second
>> Edition"
>> >> >
>> >> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this
>> month and
>> >> > 15% off (POURING) until April 19th.
>> >> >
>> >> > > -----Original Message-----
>> >> > > From: [hidden email] [mailto:elecraft-
>> >> > > [hidden email]] On Behalf Of Jim Miller
>> >> > > Sent: Monday, April 15, 2013 7:25 PM
>> >> > > To: Terry Posey
>> >> > > Cc: Elecraft Reflector
>> >> > > Subject: Re: [Elecraft] PR6 Clarification
>> >> > >
>> >> > > I believe the Key line interrupter interrupts pin 10 rather than
>> pin
>> >> > 11
>> >> > > after reviewing the K3 and KPA manual. I don't use the Pin 11
>> option
>> >> > on
>> >> > > the
>> >> > > KPA (it's disabled) rather use the keyline interrupter and RCA
>> jack
>> >> > > cabling
>> >> > > to interface all the keying interruption which includes my
>> antenna
>> >> > > switch.
>> >> > >
>> >> > > Thanks for your concern and don't hesitate to correct me if I've
>> made
>> >> > > an
>> >> > > incorrect assessment.
>> >> > >
>> >> > > 73
>> >> > >
>> >> > > jim ab3cv
>> >> > >
>> >> > >
>> >> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey
>> <[hidden email]>
>> >> > > wrote:
>> >> > >
>> >> > > > Hi Jim -
>> >> > > >
>> >> > > > You are well on your way to 6m success with the
>> >> > K3/KPA500/KAT500/PR6
>> >> > > line
>> >> > > > up. However, there is one more issue you will need to address
>> in
>> >> > > your
>> >> > > > cabling system. The K3's Digout1 signal is asserted on the
>> PIN 11
>> >> > of
>> >> > > the
>> >> > > > AUX cable. That presents a conflict with the KPA500 INHIBIT
>> on PIN
>> >> > > 11 on
>> >> > > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11
>> >> > needs
>> >> > > to be
>> >> > > > "interrupted" before passing the Digout1 signal onto the
>> KPA500 and
>> >> > > KAT500,
>> >> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
>> >> > > >
>> >> > > > I purchased a HD15 male/female "port saver" adapter from the
>> Web
>> >> > ($5)
>> >> > > and
>> >> > > > removed PIN 11 with pliers. Install the "Y" cable at the K3
>> ACC
>> >> > > port, then
>> >> > > > connect the PR6 to one side of the "Y" cable. Install the PIN
>> 11
>> >> > > > interrupter "port saver" adapter on the other side of the "Y"
>> cable
>> >> > > and
>> >> > > > attach the HD15 cable connections to the KPA500 and the
>> KAT500.
>> >> > > >
>> >> > > > I hope this helps.
>> >> > > >
>> >> > > > 73,
>> >> > > > Terry K4RX
>> >> > > >
>> >> > > >
>> >> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm
>> getting
>> >> > > ready to
>> >> > > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to
>> the
>> >> > > tower
>> >> > > > then about 40ft of Buryflex in the tower run and various
>> pigtails.
>> >> > So
>> >> > > my
>> >> > > > feedline losses should be relatively low.
>> >> > > >
>> >> > > > Based on various threads I've decided to go ahead and get the
>> PR6
>> >> > but
>> >> > > want
>> >> > > > to make sure I understand how to use it. It appears that it is
>> >> > > bypassed
>> >> > > > completely by the K3 on the transmit path to the KPA100 which
>> then
>> >> > > goes to
>> >> > > > the KPA500 and KAT500 then to the antenna.
>> >> > > >
>> >> > > > On receive the path back from the KPA/KAT is passed thru the
>> PR6
>> >> > > > automatically as long as it is powered and the RXAnt is
>> selected
>> >> > for
>> >> > > 6m.
>> >> > > >
>> >> > > > So no fancy additional cabling required other than
>> Power/Digout1
>> >> > and
>> >> > > the
>> >> > > > RXin/RXout pair.
>> >> > > >
>> >> > > > My Beverages will just connect now through the PR6 supplied
>> input.
>> >> > > >
>> >> > > > All good?
>> >> > > >
>> >> > > > Jim ab3cv
>> >> > > >
>> >> > > >
>> >> > > >
>> >> > > ______________________________________________________________
>> >> > > Elecraft mailing list
>> >> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> >> > > Help: http://mailman.qth.net/mmfaq.htm
>> >> > > Post: mailto:[hidden email]
>> >> > >
>> >> > > This list hosted by: http://www.qsl.net
>> >> > > Please help support this email list:
>> http://www.qsl.net/donate.html
>> >> > ______________________________________________________________
>> >> > Elecraft mailing list
>> >> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> >> > Help: http://mailman.qth.net/mmfaq.htm
>> >> > Post: mailto:[hidden email]
>> >> >
>> >> > This list hosted by: http://www.qsl.net
>> >> > Please help support this email list:
>> http://www.qsl.net/donate.html
>> >> ______________________________________________________________
>> >> Elecraft mailing list
>> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> >> Help: http://mailman.qth.net/mmfaq.htm
>> >> Post: mailto:[hidden email]
>> >>
>> >> This list hosted by: http://www.qsl.net
>> >> Please help support this email list:
>> http://www.qsl.net/donate.html****
>> >>
>> >> ** **
>> >>
>> > ______________________________________________________________
>> > Elecraft mailing list
>> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> > Help: http://mailman.qth.net/mmfaq.htm
>> > Post: mailto:[hidden email]
>> >
>> > This list hosted by: http://www.qsl.net
>> > Please help support this email list: http://www.qsl.net/donate.html

Jim Brown-10

Re: PR6 Clarification

In reply to this post by Cady, Fred

On 4/15/2013 8:18 PM, Cady, Fred wrote:
> ,
> What I'd like to be able to do is to disable the amp on some bands (e.g. 30 m)

FWIW, I really appreciate being able to run the KPA500 on 30M to give me
200W output when I'm chasing DX in a pileup, or trying to work someone
over a very long path. The KPA is programmed so that 200W is all you
get, and it only needs something like 7-8 watts drive to get there.

73, Jim K9YC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Cady, Fred

Unterminated PR6, was RE: PR6 Clarification

In reply to this post by Iain MacDonnell - N6ML-2

The conditions are:

The PR6 is powered-on (say an external supply or the K3's 12v output) AND you are not on 6 m AND DIGOUT1 is low (if, say, you are using it to disable the KPA500 on some - maybe high swr and you don't want to run the amp) AND RX ANT is not selected.

When this is the case, DIGOUT1 switches the PR6 input to Preamp In and its output to Preamp Out, but without RX ANT selected the main antenna is not routed through the PR6. This leaves the PR6 input and output floating (unlike when DIGOUT1 is high when the input and output of the PR6 are terminated in 50 ohms).

So my question: Is that a problem for the PR6?

Cheers,
Fred

Fred Cady
fcady at ieee dot org

> -----Original Message-----
> From: [hidden email] [mailto:[hidden email]] On Behalf Of iain
> macdonnell - N6ML
> Sent: Tuesday, April 16, 2013 9:50 AM
> To: Cady, Fred
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] PR6 Clarification
>
> Hi Fred,
>
> I'm not sure I completely understand your question, but my PR6 is on
> all the time (it is not connected to the K3's ACC port), and I just
> use RX ANT on 6m to bring it in-line. This is not a problem for me,
> since I do not have any other RX ants that I need to feed through the
> PR6 for other bands. AFAIK, this is a "supported configuration".
>
> 73,
>
> ~iain / N6ML
>
>
> On Tue, Apr 16, 2013 at 7:44 AM, Cady, Fred <[hidden email]>
> wrote:
> > Hey, Ian (and others),
> > What do you think about having the PR6 powered-up and controlled-on
> with DIGOUT1 while on another band with RX ANT not enabled? It looks
> like the PR6 input and outputs are floating. Do you think that is a
> problem for the PR6?
> >
> > Fred
> >
> >
> > Fred Cady
> > fcady at ieee dot org
> >
> >> -----Original Message-----
> >> From: [hidden email] [mailto:[hidden email]] On Behalf Of iain
> >> macdonnell - N6ML
> >> Sent: Tuesday, April 16, 2013 7:55 AM
> >> To: Jim Miller
> >> Cc: Cady, Fred; Elecraft Reflector
> >> Subject: Re: [Elecraft] PR6 Clarification
> >>
> >> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller <[hidden email]>
> wrote:
> >> > It seems like it would be an easy thing to implement in the
> KPA500.
> >> Per
> >> > Band Standby.
> >>
> >> Good idea - why didn't I think of it? Oh, wait, I did :)
> >>
> >> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
> >> bypass-td6247211.html
> >>
> >> Hasn't transpired so-far, though....
> >>
> >> 73,
> >>
> >> ~iain / N6ML
> >>
> >>
> >> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred
> <[hidden email]>
> >> wrote:
> >> >
> >> >> Hi Jim,****
> >> >>
> >> >> What I'd like to be able to do is to disable the amp on some
> bands
> >> (e.g.
> >> >> 30 m), by asserting (low) DIGOUT1 (and setting KPA500 INHIB IN
> to
> >> ENABLE)
> >> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
> >> the PR6.
> >> >> I'm just lazy, that's all. Plus it's fun to think about!****
> >> >>
> >> >> Cheers,****
> >> >>
> >> >> Fred****
> >> >>
> >> >> ** **
> >> >>
> >> >> ** **
> >> >>
> >> >> Fred Cady
> >> >> fcady at ieee dot org ****
> >> >>
> >> >> *From:* [hidden email] [mailto:[hidden email]] *On
> >> Behalf Of *Jim
> >> >> Miller
> >> >> *Sent:* Monday, April 15, 2013 8:52 PM
> >> >> *To:* Cady, Fred
> >> >>
> >> >> *Cc:* Elecraft Reflector
> >> >> *Subject:* Re: [Elecraft] PR6 Clarification****
> >> >>
> >> >> ** **
> >> >>
> >> >> I'm not getting the importance of a Pin 11 solution. I just
> disable
> >> the
> >> >> KPA500 sensing of that pin by the menu selection. I don't see the
> >> need for
> >> >> it.****
> >> >>
> >> >> ****
> >> >>
> >> >> I'm definitely running the KPA500 on 6m.****
> >> >>
> >> >> ****
> >> >>
> >> >> If for some strange reason Pin 11 is asserted it just causes the
> >> KPA500 to
> >> >> be inhibited, not turned on, which is a failsafe direction.****
> >> >>
> >> >> ****
> >> >>
> >> >> 73****
> >> >>
> >> >> ****
> >> >>
> >> >> jim ab3cv****
> >> >>
> >> >> ** **
> >> >>
> >> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred
> <[hidden email]>
> >> wrote:
> >> >> ****
> >> >>
> >> >> Ahh, looking back at my notes I see the other solution would be
> to
> >> make
> >> >> the KPA500 INHIBIT IN be per/band. But you would still have to
> take
> >> care of
> >> >> not turning on the PR6 when DIGOUT1 is low with some external
> logic
> >> if you
> >> >> cared about that.
> >> >>
> >> >> KE7X****
> >> >>
> >> >>
> >> >> Fred Cady
> >> >> fcady at ieee dot org****
> >> >>
> >> >> > -----Original Message-----
> >> >> > From: [hidden email] [mailto:elecraft-****
> >> >>
> >> >> > [hidden email]] On Behalf Of Cady, Fred
> >> >> > Sent: Monday, April 15, 2013 7:42 PM
> >> >> > To: 'Elecraft Reflector'
> >> >> > Subject: Re: [Elecraft] PR6 Clarification
> >> >> >
> >> >> > K4RX's inhibit line inhibiter for pin 11 is the same idea as
> the
> >> >> > keyline inhibiter for pin 10. However, it is not really needed
> >> because
> >> >> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin
> 11
> >> will
> >> >> > not inhibit the amp accomplishing the same thing as pulling pin
> 11
> >> from
> >> >> > the connector. Of course pulling the pin is a fail-safe
> solution.
> >> What
> >> >> > is really needed is some logic that blocks pin 11 from the KPA
> for
> >> 6m
> >> >> > (assuming you want the amp on for 6) and passes it for the
> other
> >> bands.
> >> >> > That way you could inhibit the amp on, say, 30 m or other bands
> >> where
> >> >> > there might not be a good match. I worked up a circuit to do
> this
> >> once
> >> >> > upon a time and should dust it off again.
> >> >> > 73,
> >> >> > Fred
> >> >> >
> >> >> >
> >> >> > Fred Cady
> >> >> > fcady at ieee dot org
> >> >> > "The Elecraft K3: Design, Configuration, and Operation Second
> >> Edition"
> >> >> >
> >> >> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this
> >> month and
> >> >> > 15% off (POURING) until April 19th.
> >> >> >
> >> >> > > -----Original Message-----
> >> >> > > From: [hidden email] [mailto:elecraft-
> >> >> > > [hidden email]] On Behalf Of Jim Miller
> >> >> > > Sent: Monday, April 15, 2013 7:25 PM
> >> >> > > To: Terry Posey
> >> >> > > Cc: Elecraft Reflector
> >> >> > > Subject: Re: [Elecraft] PR6 Clarification
> >> >> > >
> >> >> > > I believe the Key line interrupter interrupts pin 10 rather
> than
> >> pin
> >> >> > 11
> >> >> > > after reviewing the K3 and KPA manual. I don't use the Pin 11
> >> option
> >> >> > on
> >> >> > > the
> >> >> > > KPA (it's disabled) rather use the keyline interrupter and
> RCA
> >> jack
> >> >> > > cabling
> >> >> > > to interface all the keying interruption which includes my
> >> antenna
> >> >> > > switch.
> >> >> > >
> >> >> > > Thanks for your concern and don't hesitate to correct me if
> I've
> >> made
> >> >> > > an
> >> >> > > incorrect assessment.
> >> >> > >
> >> >> > > 73
> >> >> > >
> >> >> > > jim ab3cv
> >> >> > >
> >> >> > >
> >> >> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey
> >> <[hidden email]>
> >> >> > > wrote:
> >> >> > >
> >> >> > > > Hi Jim -
> >> >> > > >
> >> >> > > > You are well on your way to 6m success with the
> >> >> > K3/KPA500/KAT500/PR6
> >> >> > > line
> >> >> > > > up. However, there is one more issue you will need to
> address
> >> in
> >> >> > > your
> >> >> > > > cabling system. The K3's Digout1 signal is asserted on the
> >> PIN 11
> >> >> > of
> >> >> > > the
> >> >> > > > AUX cable. That presents a conflict with the KPA500
> INHIBIT
> >> on PIN
> >> >> > > 11 on
> >> >> > > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN
> 11
> >> >> > needs
> >> >> > > to be
> >> >> > > > "interrupted" before passing the Digout1 signal onto the
> >> KPA500 and
> >> >> > > KAT500,
> >> >> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
> >> >> > > >
> >> >> > > > I purchased a HD15 male/female "port saver" adapter from
> the
> >> Web
> >> >> > ($5)
> >> >> > > and
> >> >> > > > removed PIN 11 with pliers. Install the "Y" cable at the
> K3
> >> ACC
> >> >> > > port, then
> >> >> > > > connect the PR6 to one side of the "Y" cable. Install the
> PIN
> >> 11
> >> >> > > > interrupter "port saver" adapter on the other side of the
> "Y"
> >> cable
> >> >> > > and
> >> >> > > > attach the HD15 cable connections to the KPA500 and the
> >> KAT500.
> >> >> > > >
> >> >> > > > I hope this helps.
> >> >> > > >
> >> >> > > > 73,
> >> >> > > > Terry K4RX
> >> >> > > >
> >> >> > > >
> >> >> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm
> >> getting
> >> >> > > ready to
> >> >> > > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50
> to
> >> the
> >> >> > > tower
> >> >> > > > then about 40ft of Buryflex in the tower run and various
> >> pigtails.
> >> >> > So
> >> >> > > my
> >> >> > > > feedline losses should be relatively low.
> >> >> > > >
> >> >> > > > Based on various threads I've decided to go ahead and get
> the
> >> PR6
> >> >> > but
> >> >> > > want
> >> >> > > > to make sure I understand how to use it. It appears that it
> is
> >> >> > > bypassed
> >> >> > > > completely by the K3 on the transmit path to the KPA100
> which
> >> then
> >> >> > > goes to
> >> >> > > > the KPA500 and KAT500 then to the antenna.
> >> >> > > >
> >> >> > > > On receive the path back from the KPA/KAT is passed thru
> the
> >> PR6
> >> >> > > > automatically as long as it is powered and the RXAnt is
> >> selected
> >> >> > for
> >> >> > > 6m.
> >> >> > > >
> >> >> > > > So no fancy additional cabling required other than
> >> Power/Digout1
> >> >> > and
> >> >> > > the
> >> >> > > > RXin/RXout pair.
> >> >> > > >
> >> >> > > > My Beverages will just connect now through the PR6 supplied
> >> input.
> >> >> > > >
> >> >> > > > All good?
> >> >> > > >
> >> >> > > > Jim ab3cv
> >> >> > > >
> >> >> > > >
> >> >> > > >
> >> >> > >
> ______________________________________________________________
> >> >> > > Elecraft mailing list
> >> >> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> >> > > Help: http://mailman.qth.net/mmfaq.htm
> >> >> > > Post: mailto:[hidden email]
> >> >> > >
> >> >> > > This list hosted by: http://www.qsl.net
> >> >> > > Please help support this email list:
> >> http://www.qsl.net/donate.html
> >> >> > ______________________________________________________________
> >> >> > Elecraft mailing list
> >> >> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> >> > Help: http://mailman.qth.net/mmfaq.htm
> >> >> > Post: mailto:[hidden email]
> >> >> >
> >> >> > This list hosted by: http://www.qsl.net
> >> >> > Please help support this email list:
> >> http://www.qsl.net/donate.html
> >> >> ______________________________________________________________
> >> >> Elecraft mailing list
> >> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> >> Help: http://mailman.qth.net/mmfaq.htm
> >> >> Post: mailto:[hidden email]
> >> >>
> >> >> This list hosted by: http://www.qsl.net
> >> >> Please help support this email list:
> >> http://www.qsl.net/donate.html****
> >> >>
> >> >> ** **
> >> >>
> >> > ______________________________________________________________
> >> > Elecraft mailing list
> >> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> > Help: http://mailman.qth.net/mmfaq.htm
> >> > Post: mailto:[hidden email]
> >> >
> >> > This list hosted by: http://www.qsl.net
> >> > Please help support this email list:
> http://www.qsl.net/donate.html

Jim Brown-10

Re: Unterminated PR6, was RE: PR6 Clarification

On 4/16/2013 11:01 AM, Cady, Fred wrote:
> This leaves the PR6 input and output floating

We have a problem of symantics. All uses I've seen of "floating" with
respect to electronic circuits mean that the circuit has no "ground
reference."

> (unlike when DIGOUT1 is high when the input and output of the PR6 are terminated in 50 ohms).

The word most commonly used to describe a circuit with no connected load
is "unterminated."

> So my question: Is that a problem for the PR6?

I see no reason why it should be a problem unless it's badly designed,
which is unlikely -- it's essentially a fairly low gain preamp with low
input and output impedances. Preamps of this sort are usually designed
for use at the top of a tower, where they are relay-switched between TX
and RX.

73, Jim K9YC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Iain MacDonnell - N6ML-2

Re: Unterminated PR6, was RE: PR6 Clarification

In reply to this post by Cady, Fred

AFAIK, that should be OK, Fred. So long as RX ANT is OFF, it doesn't
matter whether the PR6 is on or off, as it will not be in the RF path.

73,

~iain / N6ML

On Tue, Apr 16, 2013 at 11:01 AM, Cady, Fred <[hidden email]> wrote:

> The conditions are:
>
> The PR6 is powered-on (say an external supply or the K3's 12v output) AND you are not on 6 m AND DIGOUT1 is low (if, say, you are using it to disable the KPA500 on some - maybe high swr and you don't want to run the amp) AND RX ANT is not selected.
>
> When this is the case, DIGOUT1 switches the PR6 input to Preamp In and its output to Preamp Out, but without RX ANT selected the main antenna is not routed through the PR6. This leaves the PR6 input and output floating (unlike when DIGOUT1 is high when the input and output of the PR6 are terminated in 50 ohms).
>
> So my question: Is that a problem for the PR6?
>
> Cheers,
> Fred
>
> Fred Cady
> fcady at ieee dot org
>
>> -----Original Message-----
>> From: [hidden email] [mailto:[hidden email]] On Behalf Of iain
>> macdonnell - N6ML
>> Sent: Tuesday, April 16, 2013 9:50 AM
>> To: Cady, Fred
>> Cc: Elecraft Reflector
>> Subject: Re: [Elecraft] PR6 Clarification
>>
>> Hi Fred,
>>
>> I'm not sure I completely understand your question, but my PR6 is on
>> all the time (it is not connected to the K3's ACC port), and I just
>> use RX ANT on 6m to bring it in-line. This is not a problem for me,
>> since I do not have any other RX ants that I need to feed through the
>> PR6 for other bands. AFAIK, this is a "supported configuration".
>>
>> 73,
>>
>> ~iain / N6ML
>>
>>
>> On Tue, Apr 16, 2013 at 7:44 AM, Cady, Fred <[hidden email]>
>> wrote:
>> > Hey, Ian (and others),
>> > What do you think about having the PR6 powered-up and controlled-on
>> with DIGOUT1 while on another band with RX ANT not enabled? It looks
>> like the PR6 input and outputs are floating. Do you think that is a
>> problem for the PR6?
>> >
>> > Fred
>> >
>> >
>> > Fred Cady
>> > fcady at ieee dot org
>> >
>> >> -----Original Message-----
>> >> From: [hidden email] [mailto:[hidden email]] On Behalf Of iain
>> >> macdonnell - N6ML
>> >> Sent: Tuesday, April 16, 2013 7:55 AM
>> >> To: Jim Miller
>> >> Cc: Cady, Fred; Elecraft Reflector
>> >> Subject: Re: [Elecraft] PR6 Clarification
>> >>
>> >> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller <[hidden email]>
>> wrote:
>> >> > It seems like it would be an easy thing to implement in the
>> KPA500.
>> >> Per
>> >> > Band Standby.
>> >>
>> >> Good idea - why didn't I think of it? Oh, wait, I did :)
>> >>
>> >> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
>> >> bypass-td6247211.html
>> >>
>> >> Hasn't transpired so-far, though....
>> >>
>> >> 73,
>> >>
>> >> ~iain / N6ML
>> >>
>> >>
>> >> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred
>> <[hidden email]>
>> >> wrote:
>> >> >
>> >> >> Hi Jim,****
>> >> >>
>> >> >> What I'd like to be able to do is to disable the amp on some
>> bands
>> >> (e.g.
>> >> >> 30 m), by asserting (low) DIGOUT1 (and setting KPA500 INHIB IN
>> to
>> >> ENABLE)
>> >> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
>> >> the PR6.
>> >> >> I'm just lazy, that's all. Plus it's fun to think about!****
>> >> >>
>> >> >> Cheers,****
>> >> >>
>> >> >> Fred****
>> >> >>
>> >> >> ** **
>> >> >>
>> >> >> ** **
>> >> >>
>> >> >> Fred Cady
>> >> >> fcady at ieee dot org ****
>> >> >>
>> >> >> *From:* [hidden email] [mailto:[hidden email]] *On
>> >> Behalf Of *Jim
>> >> >> Miller
>> >> >> *Sent:* Monday, April 15, 2013 8:52 PM
>> >> >> *To:* Cady, Fred
>> >> >>
>> >> >> *Cc:* Elecraft Reflector
>> >> >> *Subject:* Re: [Elecraft] PR6 Clarification****
>> >> >>
>> >> >> ** **
>> >> >>
>> >> >> I'm not getting the importance of a Pin 11 solution. I just
>> disable
>> >> the
>> >> >> KPA500 sensing of that pin by the menu selection. I don't see the
>> >> need for
>> >> >> it.****
>> >> >>
>> >> >> ****
>> >> >>
>> >> >> I'm definitely running the KPA500 on 6m.****
>> >> >>
>> >> >> ****
>> >> >>
>> >> >> If for some strange reason Pin 11 is asserted it just causes the
>> >> KPA500 to
>> >> >> be inhibited, not turned on, which is a failsafe direction.****
>> >> >>
>> >> >> ****
>> >> >>
>> >> >> 73****
>> >> >>
>> >> >> ****
>> >> >>
>> >> >> jim ab3cv****
>> >> >>
>> >> >> ** **
>> >> >>
>> >> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred
>> <[hidden email]>
>> >> wrote:
>> >> >> ****
>> >> >>
>> >> >> Ahh, looking back at my notes I see the other solution would be
>> to
>> >> make
>> >> >> the KPA500 INHIBIT IN be per/band. But you would still have to
>> take
>> >> care of
>> >> >> not turning on the PR6 when DIGOUT1 is low with some external
>> logic
>> >> if you
>> >> >> cared about that.
>> >> >>
>> >> >> KE7X****
>> >> >>
>> >> >>
>> >> >> Fred Cady
>> >> >> fcady at ieee dot org****
>> >> >>
>> >> >> > -----Original Message-----
>> >> >> > From: [hidden email] [mailto:elecraft-****
>> >> >>
>> >> >> > [hidden email]] On Behalf Of Cady, Fred
>> >> >> > Sent: Monday, April 15, 2013 7:42 PM
>> >> >> > To: 'Elecraft Reflector'
>> >> >> > Subject: Re: [Elecraft] PR6 Clarification
>> >> >> >
>> >> >> > K4RX's inhibit line inhibiter for pin 11 is the same idea as
>> the
>> >> >> > keyline inhibiter for pin 10. However, it is not really needed
>> >> because
>> >> >> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin
>> 11
>> >> will
>> >> >> > not inhibit the amp accomplishing the same thing as pulling pin
>> 11
>> >> from
>> >> >> > the connector. Of course pulling the pin is a fail-safe
>> solution.
>> >> What
>> >> >> > is really needed is some logic that blocks pin 11 from the KPA
>> for
>> >> 6m
>> >> >> > (assuming you want the amp on for 6) and passes it for the
>> other
>> >> bands.
>> >> >> > That way you could inhibit the amp on, say, 30 m or other bands
>> >> where
>> >> >> > there might not be a good match. I worked up a circuit to do
>> this
>> >> once
>> >> >> > upon a time and should dust it off again.
>> >> >> > 73,
>> >> >> > Fred
>> >> >> >
>> >> >> >
>> >> >> > Fred Cady
>> >> >> > fcady at ieee dot org
>> >> >> > "The Elecraft K3: Design, Configuration, and Operation Second
>> >> Edition"
>> >> >> >
>> >> >> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this
>> >> month and
>> >> >> > 15% off (POURING) until April 19th.
>> >> >> >
>> >> >> > > -----Original Message-----
>> >> >> > > From: [hidden email] [mailto:elecraft-
>> >> >> > > [hidden email]] On Behalf Of Jim Miller
>> >> >> > > Sent: Monday, April 15, 2013 7:25 PM
>> >> >> > > To: Terry Posey
>> >> >> > > Cc: Elecraft Reflector
>> >> >> > > Subject: Re: [Elecraft] PR6 Clarification
>> >> >> > >
>> >> >> > > I believe the Key line interrupter interrupts pin 10 rather
>> than
>> >> pin
>> >> >> > 11
>> >> >> > > after reviewing the K3 and KPA manual. I don't use the Pin 11
>> >> option
>> >> >> > on
>> >> >> > > the
>> >> >> > > KPA (it's disabled) rather use the keyline interrupter and
>> RCA
>> >> jack
>> >> >> > > cabling
>> >> >> > > to interface all the keying interruption which includes my
>> >> antenna
>> >> >> > > switch.
>> >> >> > >
>> >> >> > > Thanks for your concern and don't hesitate to correct me if
>> I've
>> >> made
>> >> >> > > an
>> >> >> > > incorrect assessment.
>> >> >> > >
>> >> >> > > 73
>> >> >> > >
>> >> >> > > jim ab3cv
>> >> >> > >
>> >> >> > >
>> >> >> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey
>> >> <[hidden email]>
>> >> >> > > wrote:
>> >> >> > >
>> >> >> > > > Hi Jim -
>> >> >> > > >
>> >> >> > > > You are well on your way to 6m success with the
>> >> >> > K3/KPA500/KAT500/PR6
>> >> >> > > line
>> >> >> > > > up. However, there is one more issue you will need to
>> address
>> >> in
>> >> >> > > your
>> >> >> > > > cabling system. The K3's Digout1 signal is asserted on the
>> >> PIN 11
>> >> >> > of
>> >> >> > > the
>> >> >> > > > AUX cable. That presents a conflict with the KPA500
>> INHIBIT
>> >> on PIN
>> >> >> > > 11 on
>> >> >> > > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN
>> 11
>> >> >> > needs
>> >> >> > > to be
>> >> >> > > > "interrupted" before passing the Digout1 signal onto the
>> >> KPA500 and
>> >> >> > > KAT500,
>> >> >> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
>> >> >> > > >
>> >> >> > > > I purchased a HD15 male/female "port saver" adapter from
>> the
>> >> Web
>> >> >> > ($5)
>> >> >> > > and
>> >> >> > > > removed PIN 11 with pliers. Install the "Y" cable at the
>> K3
>> >> ACC
>> >> >> > > port, then
>> >> >> > > > connect the PR6 to one side of the "Y" cable. Install the
>> PIN
>> >> 11
>> >> >> > > > interrupter "port saver" adapter on the other side of the
>> "Y"
>> >> cable
>> >> >> > > and
>> >> >> > > > attach the HD15 cable connections to the KPA500 and the
>> >> KAT500.
>> >> >> > > >
>> >> >> > > > I hope this helps.
>> >> >> > > >
>> >> >> > > > 73,
>> >> >> > > > Terry K4RX
>> >> >> > > >
>> >> >> > > >
>> >> >> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm
>> >> getting
>> >> >> > > ready to
>> >> >> > > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50
>> to
>> >> the
>> >> >> > > tower
>> >> >> > > > then about 40ft of Buryflex in the tower run and various
>> >> pigtails.
>> >> >> > So
>> >> >> > > my
>> >> >> > > > feedline losses should be relatively low.
>> >> >> > > >
>> >> >> > > > Based on various threads I've decided to go ahead and get
>> the
>> >> PR6
>> >> >> > but
>> >> >> > > want
>> >> >> > > > to make sure I understand how to use it. It appears that it
>> is
>> >> >> > > bypassed
>> >> >> > > > completely by the K3 on the transmit path to the KPA100
>> which
>> >> then
>> >> >> > > goes to
>> >> >> > > > the KPA500 and KAT500 then to the antenna.
>> >> >> > > >
>> >> >> > > > On receive the path back from the KPA/KAT is passed thru
>> the
>> >> PR6
>> >> >> > > > automatically as long as it is powered and the RXAnt is
>> >> selected
>> >> >> > for
>> >> >> > > 6m.
>> >> >> > > >
>> >> >> > > > So no fancy additional cabling required other than
>> >> Power/Digout1
>> >> >> > and
>> >> >> > > the
>> >> >> > > > RXin/RXout pair.
>> >> >> > > >
>> >> >> > > > My Beverages will just connect now through the PR6 supplied
>> >> input.
>> >> >> > > >
>> >> >> > > > All good?
>> >> >> > > >
>> >> >> > > > Jim ab3cv
>> >> >> > > >
>> >> >> > > >
>> >> >> > > >
>> >> >> > >
>> ______________________________________________________________
>> >> >> > > Elecraft mailing list
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Eric Swartz - WA6HHQ

Re: KPA500 does not limit power output on any band

Administrator

In reply to this post by Jim Brown-10

Jim's statement below about a KPA500 200W limit on 30M is incorrect. The
KPA500 puts out full power on all bands when driven at its normal levels
by the K3 or any other rig. Power is controlled by the drive level from
the rig, not by the amp.

Of course in the U.S. it is the responsibility of the operator to limit
drive to the amplifier so that they do not exceed the power limits on 30M.

73,

Eric
elecraft.com

On 4/16/2013 9:14 AM, Jim Brown wrote:

> On 4/15/2013 8:18 PM, Cady, Fred wrote:
>> ,
>> What I'd like to be able to do is to disable the amp on some bands
>> (e.g. 30 m)
>
> FWIW, I really appreciate being able to run the KPA500 on 30M to give
> me 200W output when I'm chasing DX in a pileup, or trying to work
> someone over a very long path. The KPA is programmed so that 200W is
> all you get, and it only needs something like 7-8 watts drive to get
> there.
>
> 73, Jim K9YC
>

Jim Brown-10

Re: KPA500 does not limit power output on any band

Sorry guys, I was mistaken about this. I just tried to increase power
and it does, indeed, go to rated power if you drive it with 29 watts.
Sorry for the confusion.

73, Jim K9YC

On 4/17/2013 6:47 PM, Eric Swartz - WA6HHQ, Elecraft wrote:

> Jim's statement below about a KPA500 200W limit on 30M is incorrect.
> The KPA500 puts out full power on all bands when driven at its normal
> levels by the K3 or any other rig. Power is controlled by the drive
> level from the rig, not by the amp.
>
> Of course in the U.S. it is the responsibility of the operator to
> limit drive to the amplifier so that they do not exceed the power
> limits on 30M.
>
> 73,
>
> Eric
> elecraft.com
>
> On 4/16/2013 9:14 AM, Jim Brown wrote:
>> On 4/15/2013 8:18 PM, Cady, Fred wrote:
>>> ,
>>> What I'd like to be able to do is to disable the amp on some bands
>>> (e.g. 30 m)
>>
>> FWIW, I really appreciate being able to run the KPA500 on 30M to give
>> me 200W output when I'm chasing DX in a pileup, or trying to work
>> someone over a very long path. The KPA is programmed so that 200W is
>> all you get, and it only needs something like 7-8 watts drive to get
>> there.
>>
>> 73, Jim K9YC
>>
>