Elecraft

K3 and Icom PW-1

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Bob Serwy

K3 and Icom PW-1

Any one has a K3 and a PW-1 hooked up for automatic band switching of the
PW-1? If so, how as it accomplished?

Thanks

Bob Serwy - N9RS
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Joe Subich, W4TV-3

RE: K3 and Icom PW-1

Bob,

There are two approaches that will work to do automatic
band switching with the K3 and PW-1. The first is to use
something like the microHAM Band Decoder (or new Station
Master which replaces Band Decoder) to convert the Elecraft
(Kenwood) "IF;" CAT data to Icom CI-V Transceive broadcasts.
The second would be to build a BCD to 1 of 10 decoder and
use that to drive a voltage divider to create the Icom
compatible "Band Select" voltage.

The Station Master will be available off the shelf after
Friedrichshafen. I can supply notes on the BCD decoder
approach but have not built/tested any devices. That is a
"low tech" solution and not something microHAM is likely to
produce and I'm not inclined to get involved in building "one
off" units since that is a relatively high cost/low return
proposition.

73,

... Joe, W4TV

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Bob Serwy
> Sent: Monday, June 02, 2008 11:24 AM
> To: [hidden email]
> Subject: [Elecraft] K3 and Icom PW-1
>
>
> Any one has a K3 and a PW-1 hooked up for automatic band
> switching of the PW-1? If so, how as it accomplished?
>
> Thanks
>
> Bob Serwy - N9RS

Dick Dievendorff

RE: K3 and Icom PW-1

See also Top Ten Devices application note #3,
http://www.qth.com/topten/apnote3.htm

Unfortunately the schematic doesn't seem to show up (on my browser), but
I've seen the schematic before. It's the BCD to voltage divider network
(with trimmer pots) that Joe mentions below.

The schematic was once at http://www.qth.com/topten/icomencd.gif but the
file doesn't seem to be there now.

I'll forward this to Dave Hawes of Top Ten Devices; maybe he can get the
image file restored.

73 de Dick, K6KR

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Joe Subich, W4TV
Sent: Monday, June 02, 2008 9:30 AM
To: 'Bob Serwy'; [hidden email]
Subject: RE: [Elecraft] K3 and Icom PW-1

Bob,

There are two approaches that will work to do automatic
band switching with the K3 and PW-1. The first is to use
something like the microHAM Band Decoder (or new Station
Master which replaces Band Decoder) to convert the Elecraft
(Kenwood) "IF;" CAT data to Icom CI-V Transceive broadcasts.
The second would be to build a BCD to 1 of 10 decoder and
use that to drive a voltage divider to create the Icom
compatible "Band Select" voltage.

The Station Master will be available off the shelf after
Friedrichshafen. I can supply notes on the BCD decoder
approach but have not built/tested any devices. That is a
"low tech" solution and not something microHAM is likely to
produce and I'm not inclined to get involved in building "one
off" units since that is a relatively high cost/low return
proposition.

73,

... Joe, W4TV

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
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Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Jerry Flanders

RE: K3 and Icom PW-1

IIRC, this method only works for the major bands. ICOM did not
provide for the others.

Jerry W4UK

At 01:42 PM 6/2/2008, Dick Dievendorff wrote:

>See also Top Ten Devices application note #3,
>http://www.qth.com/topten/apnote3.htm
>
>Unfortunately the schematic doesn't seem to show up (on my browser), but
>I've seen the schematic before. It's the BCD to voltage divider network
>(with trimmer pots) that Joe mentions below.
>
>The schematic was once at http://www.qth.com/topten/icomencd.gif but the
>file doesn't seem to be there now.
>
>I'll forward this to Dave Hawes of Top Ten Devices; maybe he can get the
>image file restored.
>
>73 de Dick, K6KR
>
>
>-----Original Message-----
>From: [hidden email]
>[mailto:[hidden email]] On Behalf Of Joe Subich, W4TV
>Sent: Monday, June 02, 2008 9:30 AM
>To: 'Bob Serwy'; [hidden email]
>Subject: RE: [Elecraft] K3 and Icom PW-1
>
>
>Bob,
>
>There are two approaches that will work to do automatic
>band switching with the K3 and PW-1. The first is to use
>something like the microHAM Band Decoder (or new Station
>Master which replaces Band Decoder) to convert the Elecraft
>(Kenwood) "IF;" CAT data to Icom CI-V Transceive broadcasts.
>The second would be to build a BCD to 1 of 10 decoder and
>use that to drive a voltage divider to create the Icom
>compatible "Band Select" voltage.
>
>The Station Master will be available off the shelf after
>Friedrichshafen. I can supply notes on the BCD decoder
>approach but have not built/tested any devices. That is a
>"low tech" solution and not something microHAM is likely to
>produce and I'm not inclined to get involved in building "one
>off" units since that is a relatively high cost/low return
>proposition.
>
>73,
>
> ... Joe, W4TV
>
>
>
> > -----Original Message-----
> > From: [hidden email]
> > [mailto:[hidden email]] On Behalf Of Bob Serwy
> > Sent: Monday, June 02, 2008 11:24 AM
> > To: [hidden email]
> > Subject: [Elecraft] K3 and Icom PW-1
> >
> >
> > Any one has a K3 and a PW-1 hooked up for automatic band
> > switching of the PW-1? If so, how as it accomplished?
> >
> > Thanks
> >
> > Bob Serwy - N9RS

Dick Dievendorff

RE: K3 and Icom PW-1

Yup. Joe's StationMaster solution is better if all-band switching is
important to you.

I'm an "occasional driver" on the WARC bands and I can reach over to the
PW-1 control head and move to 18 or 24 MHz manually. I really want the
automatic switching for contest operations.

Dick, K6KR

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Jerry Flanders
Sent: Monday, June 02, 2008 10:48 AM
To: [hidden email]
Subject: RE: [Elecraft] K3 and Icom PW-1

IIRC, this method only works for the major bands. ICOM did not
provide for the others.

Jerry W4UK

At 01:42 PM 6/2/2008, Dick Dievendorff wrote:

Joe Subich, W4TV-3

RE: K3 and Icom PW-1

In reply to this post by Jerry Flanders

> IIRC, this method only works for the major bands. ICOM did not
> provide for the others.

Actually, my design uses a resistive divider network - with standard
2% resistors - that takes +12V (regulated for reliability) and provides
the proper voltage for all bands 160 - 6 M based on which tap is
grounded. It is a bit different than the Top Ten approach which
uses individual trimmers to set the output voltage for each "band"
and source drivers that have been discontinued. Note - Icom uses
the same voltage for 17/15 and 12/10 so it requires 8 outputs to
cover 160, 80, 40, 30, 20, 15/17, 12/10, and 6m. The decoder does
not directly decode 6 meters (BCD 10) but the circuit can be
configured to select 6 as a "none of the above" case (BCD 0) or
a dedicated 6 M circuit could be added to the basic decoder.

I have been asked off-line if I would be willing to offer and
interface - either complete or as a mini-kit. I have no interest
in building a complete product "by hand" and the cost of a small
run in Europe is currently prohibitive. However, I'll ask here
one time only ... how much interest would there be in a kit?
Should a kit include a case or are users likely to incorporate
it in another piece of equipment?

Responses direct only ...

73,

... Joe, W4TV

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Jerry Flanders
> Sent: Monday, June 02, 2008 1:48 PM
> To: [hidden email]
> Subject: RE: [Elecraft] K3 and Icom PW-1
>
>
> IIRC, this method only works for the major bands. ICOM did not
> provide for the others.
>
> Jerry W4UK
>
> At 01:42 PM 6/2/2008, Dick Dievendorff wrote:
> >See also Top Ten Devices application note #3,
> >http://www.qth.com/topten/apnote3.htm
> >
> >Unfortunately the schematic doesn't seem to show up (on my
> browser), but
> >I've seen the schematic before. It's the BCD to voltage
> divider network
> >(with trimmer pots) that Joe mentions below.
> >
> >The schematic was once at
> http://www.qth.com/topten/icomencd.gif but the
> >file doesn't seem to be there now.
> >
> >I'll forward this to Dave Hawes of Top Ten Devices; maybe he
> can get the
> >image file restored.
> >
> >73 de Dick, K6KR
> >
> >
> >-----Original Message-----
> >From: [hidden email]
> >[mailto:[hidden email]] On Behalf Of Joe
> Subich, W4TV
> >Sent: Monday, June 02, 2008 9:30 AM
> >To: 'Bob Serwy'; [hidden email]
> >Subject: RE: [Elecraft] K3 and Icom PW-1
> >
> >
> >Bob,
> >
> >There are two approaches that will work to do automatic
> >band switching with the K3 and PW-1. The first is to use
> >something like the microHAM Band Decoder (or new Station
> >Master which replaces Band Decoder) to convert the Elecraft
> >(Kenwood) "IF;" CAT data to Icom CI-V Transceive broadcasts.
> >The second would be to build a BCD to 1 of 10 decoder and
> >use that to drive a voltage divider to create the Icom
> >compatible "Band Select" voltage.
> >
> >The Station Master will be available off the shelf after
> >Friedrichshafen. I can supply notes on the BCD decoder
> >approach but have not built/tested any devices. That is a
> >"low tech" solution and not something microHAM is likely to
> >produce and I'm not inclined to get involved in building "one
> >off" units since that is a relatively high cost/low return
> >proposition.
> >
> >73,
> >
> > ... Joe, W4TV
> >
> >
> >
> > > -----Original Message-----
> > > From: [hidden email]
> > > [mailto:[hidden email]] On Behalf Of Bob Serwy
> > > Sent: Monday, June 02, 2008 11:24 AM
> > > To: [hidden email]
> > > Subject: [Elecraft] K3 and Icom PW-1
> > >
> > >
> > > Any one has a K3 and a PW-1 hooked up for automatic band
> > > switching of the PW-1? If so, how as it accomplished?
> > >
> > > Thanks
> > >
> > > Bob Serwy - N9RS
>
> _______________________________________________
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> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
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>

Joe Subich, W4TV-3

RE: K3 and Icom PW-1

One correction ...

I misread the MC14028 spec sheet. There is no "none of the above"
output from the 14028. To include 6 meters, it will be necessary
to add a separate decoder for BCD 10 ... not difficult but just
one more step.

73,

... Joe, W4TV

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Joe
> Subich, W4TV
> Sent: Monday, June 02, 2008 4:33 PM
> To: 'Jerry Flanders'; [hidden email]
> Subject: RE: [Elecraft] K3 and Icom PW-1
>
>
>
> > IIRC, this method only works for the major bands. ICOM did not
> > provide for the others.
>
> Actually, my design uses a resistive divider network - with standard
> 2% resistors - that takes +12V (regulated for reliability)
> and provides
> the proper voltage for all bands 160 - 6 M based on which tap is
> grounded. It is a bit different than the Top Ten approach which
> uses individual trimmers to set the output voltage for each "band"
> and source drivers that have been discontinued. Note - Icom uses
> the same voltage for 17/15 and 12/10 so it requires 8 outputs to
> cover 160, 80, 40, 30, 20, 15/17, 12/10, and 6m. The decoder does
> not directly decode 6 meters (BCD 10) but the circuit can be
> configured to select 6 as a "none of the above" case (BCD 0) or
> a dedicated 6 M circuit could be added to the basic decoder.
>
> I have been asked off-line if I would be willing to offer and
> interface - either complete or as a mini-kit. I have no interest
> in building a complete product "by hand" and the cost of a small
> run in Europe is currently prohibitive. However, I'll ask here
> one time only ... how much interest would there be in a kit?
> Should a kit include a case or are users likely to incorporate
> it in another piece of equipment?
>
> Responses direct only ...
>
> 73,
>
> ... Joe, W4TV
>
>
>
>
> > -----Original Message-----
> > From: [hidden email]
> > [mailto:[hidden email]] On Behalf Of
> Jerry Flanders
> > Sent: Monday, June 02, 2008 1:48 PM
> > To: [hidden email]
> > Subject: RE: [Elecraft] K3 and Icom PW-1
> >
> >
> > IIRC, this method only works for the major bands. ICOM did not
> > provide for the others.
> >
> > Jerry W4UK
> >
> > At 01:42 PM 6/2/2008, Dick Dievendorff wrote:
> > >See also Top Ten Devices application note #3,
> > >http://www.qth.com/topten/apnote3.htm
> > >
> > >Unfortunately the schematic doesn't seem to show up (on my
> > browser), but
> > >I've seen the schematic before. It's the BCD to voltage
> > divider network
> > >(with trimmer pots) that Joe mentions below.
> > >
> > >The schematic was once at
> > http://www.qth.com/topten/icomencd.gif but the
> > >file doesn't seem to be there now.
> > >
> > >I'll forward this to Dave Hawes of Top Ten Devices; maybe he
> > can get the
> > >image file restored.
> > >
> > >73 de Dick, K6KR
> > >
> > >
> > >-----Original Message-----
> > >From: [hidden email]
> > >[mailto:[hidden email]] On Behalf Of Joe
> > Subich, W4TV
> > >Sent: Monday, June 02, 2008 9:30 AM
> > >To: 'Bob Serwy'; [hidden email]
> > >Subject: RE: [Elecraft] K3 and Icom PW-1
> > >
> > >
> > >Bob,
> > >
> > >There are two approaches that will work to do automatic
> > >band switching with the K3 and PW-1. The first is to use
> > >something like the microHAM Band Decoder (or new Station
> > >Master which replaces Band Decoder) to convert the Elecraft
> > >(Kenwood) "IF;" CAT data to Icom CI-V Transceive broadcasts.
> > >The second would be to build a BCD to 1 of 10 decoder and
> > >use that to drive a voltage divider to create the Icom
> > >compatible "Band Select" voltage.
> > >
> > >The Station Master will be available off the shelf after
> > >Friedrichshafen. I can supply notes on the BCD decoder
> > >approach but have not built/tested any devices. That is a
> > >"low tech" solution and not something microHAM is likely to
> > >produce and I'm not inclined to get involved in building "one
> > >off" units since that is a relatively high cost/low return
> > >proposition.
> > >
> > >73,
> > >
> > > ... Joe, W4TV
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: [hidden email]
> > > > [mailto:[hidden email]] On Behalf Of Bob Serwy
> > > > Sent: Monday, June 02, 2008 11:24 AM
> > > > To: [hidden email]
> > > > Subject: [Elecraft] K3 and Icom PW-1
> > > >
> > > >
> > > > Any one has a K3 and a PW-1 hooked up for automatic band
> > > > switching of the PW-1? If so, how as it accomplished?
> > > >
> > > > Thanks
> > > >
> > > > Bob Serwy - N9RS
> >

Dick Dievendorff

RE: K3 and Icom PW-1

In reply to this post by Joe Subich, W4TV-3

As I think about this I'm not sure that this will work for the PW-1.
Because the PW-1 handles the WARC bands, I'm going to guess that it requires
a CI-V line for band information rather than the band level output.

Joe, do you know for sure?

The way I "sync" my IC-7800 with a PW-1 makes it clear to me that it's a
CI-V path, not a band voltage.

Dick, K6KR

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Joe Subich, W4TV
Sent: Monday, June 02, 2008 1:33 PM
To: 'Jerry Flanders'; [hidden email]
Subject: RE: [Elecraft] K3 and Icom PW-1

> IIRC, this method only works for the major bands. ICOM did not
> provide for the others.

Actually, my design uses a resistive divider network - with standard
2% resistors - that takes +12V (regulated for reliability) and provides
the proper voltage for all bands 160 - 6 M based on which tap is
grounded. It is a bit different than the Top Ten approach which
uses individual trimmers to set the output voltage for each "band"
and source drivers that have been discontinued. Note - Icom uses
the same voltage for 17/15 and 12/10 so it requires 8 outputs to
cover 160, 80, 40, 30, 20, 15/17, 12/10, and 6m. The decoder does
not directly decode 6 meters (BCD 10) but the circuit can be
configured to select 6 as a "none of the above" case (BCD 0) or
a dedicated 6 M circuit could be added to the basic decoder.

I have been asked off-line if I would be willing to offer and
interface - either complete or as a mini-kit. I have no interest
in building a complete product "by hand" and the cost of a small
run in Europe is currently prohibitive. However, I'll ask here
one time only ... how much interest would there be in a kit?
Should a kit include a case or are users likely to incorporate
it in another piece of equipment?

Responses direct only ...

73,

... Joe, W4TV

Joe Subich, W4TV-3

RE: K3 and Icom PW-1

Dick,

> As I think about this I'm not sure that this will work for the PW-1.
> Because the PW-1 handles the WARC bands, I'm going to guess that it
> requires a CI-V line for band information rather than the band level
> output.
>
> Joe, do you know for sure?

The PW-1 manual shows the +8.0 V reference and "Band Voltage input"
connections on the ACC sockets consistent with the "old style" (2KL,
4KL, AT-500) band switching system. If the connections are present,
I see no reason they should not be functional but I do not have a
PW-1 to test with.

73,

... Joe, W4TV

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Dick
> Dievendorff
> Sent: Tuesday, June 03, 2008 8:05 AM
> To: [hidden email]; 'Jerry Flanders';
> [hidden email]
> Subject: RE: [Elecraft] K3 and Icom PW-1
>
>
> As I think about this I'm not sure that this will work for the PW-1.
> Because the PW-1 handles the WARC bands, I'm going to guess
> that it requires
> a CI-V line for band information rather than the band level output.
>
> Joe, do you know for sure?
>
> The way I "sync" my IC-7800 with a PW-1 makes it clear to me
> that it's a
> CI-V path, not a band voltage.
>
> Dick, K6KR
>
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Joe
> Subich, W4TV
> Sent: Monday, June 02, 2008 1:33 PM
> To: 'Jerry Flanders'; [hidden email]
> Subject: RE: [Elecraft] K3 and Icom PW-1
>
>
> > IIRC, this method only works for the major bands. ICOM did not
> > provide for the others.
>
> Actually, my design uses a resistive divider network - with standard
> 2% resistors - that takes +12V (regulated for reliability)
> and provides
> the proper voltage for all bands 160 - 6 M based on which tap is
> grounded. It is a bit different than the Top Ten approach which
> uses individual trimmers to set the output voltage for each "band"
> and source drivers that have been discontinued. Note - Icom uses
> the same voltage for 17/15 and 12/10 so it requires 8 outputs to
> cover 160, 80, 40, 30, 20, 15/17, 12/10, and 6m. The decoder does
> not directly decode 6 meters (BCD 10) but the circuit can be
> configured to select 6 as a "none of the above" case (BCD 0) or
> a dedicated 6 M circuit could be added to the basic decoder.
>
> I have been asked off-line if I would be willing to offer and
> interface - either complete or as a mini-kit. I have no interest
> in building a complete product "by hand" and the cost of a small
> run in Europe is currently prohibitive. However, I'll ask here
> one time only ... how much interest would there be in a kit?
> Should a kit include a case or are users likely to incorporate
> it in another piece of equipment?
>
> Responses direct only ...
>
> 73,
>
> ... Joe, W4TV
>
>
>
>
> > -----Original Message-----
> > From: [hidden email]
> > [mailto:[hidden email]] On Behalf Of
> Jerry Flanders
> > Sent: Monday, June 02, 2008 1:48 PM
> > To: [hidden email]
> > Subject: RE: [Elecraft] K3 and Icom PW-1
> >
> >
> > IIRC, this method only works for the major bands. ICOM did not
> > provide for the others.
> >
> > Jerry W4UK
> >
> > At 01:42 PM 6/2/2008, Dick Dievendorff wrote:
> > >See also Top Ten Devices application note #3,
> > >http://www.qth.com/topten/apnote3.htm
> > >
> > >Unfortunately the schematic doesn't seem to show up (on my
> > browser), but
> > >I've seen the schematic before. It's the BCD to voltage
> > divider network
> > >(with trimmer pots) that Joe mentions below.
> > >
> > >The schematic was once at
> > http://www.qth.com/topten/icomencd.gif but the
> > >file doesn't seem to be there now.
> > >
> > >I'll forward this to Dave Hawes of Top Ten Devices; maybe he
> > can get the
> > >image file restored.
> > >
> > >73 de Dick, K6KR
> > >
> > >
> > >-----Original Message-----
> > >From: [hidden email]
> > >[mailto:[hidden email]] On Behalf Of Joe
> > Subich, W4TV
> > >Sent: Monday, June 02, 2008 9:30 AM
> > >To: 'Bob Serwy'; [hidden email]
> > >Subject: RE: [Elecraft] K3 and Icom PW-1
> > >
> > >
> > >Bob,
> > >
> > >There are two approaches that will work to do automatic
> > >band switching with the K3 and PW-1. The first is to use
> > >something like the microHAM Band Decoder (or new Station
> > >Master which replaces Band Decoder) to convert the Elecraft
> > >(Kenwood) "IF;" CAT data to Icom CI-V Transceive broadcasts.
> > >The second would be to build a BCD to 1 of 10 decoder and
> > >use that to drive a voltage divider to create the Icom
> > >compatible "Band Select" voltage.
> > >
> > >The Station Master will be available off the shelf after
> > >Friedrichshafen. I can supply notes on the BCD decoder
> > >approach but have not built/tested any devices. That is a
> > >"low tech" solution and not something microHAM is likely to
> > >produce and I'm not inclined to get involved in building "one
> > >off" units since that is a relatively high cost/low return
> > >proposition.
> > >
> > >73,
> > >
> > > ... Joe, W4TV
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: [hidden email]
> > > > [mailto:[hidden email]] On Behalf Of Bob Serwy
> > > > Sent: Monday, June 02, 2008 11:24 AM
> > > > To: [hidden email]
> > > > Subject: [Elecraft] K3 and Icom PW-1
> > > >
> > > >
> > > > Any one has a K3 and a PW-1 hooked up for automatic band
> > > > switching of the PW-1? If so, how as it accomplished?
> > > >
> > > > Thanks
> > > >
> > > > Bob Serwy - N9RS