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KXPA100

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KXPA100

Charlie N7CAC,

I use my KX3 to Drive a KXPA100 to drive a AL572 into a Hexbeam, with no
problem getting 1KW out.

I use the KXPA100 tuner to ensure a good match to the AL-572 and get max
power out. There should no need for a tuner with a Hexbeam, or in my view
any antenna with an SWR under 2.0, definitely not need with an SWR of 1.5.
I also use the tuner in my Icom 6700 to drive the AL572 for the same reason.

Recommend you use the tuner in the KXPA100 and see if that helps.

73s
Ron
AF1Q

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of [hidden email]
Sent: Sunday, May 13, 2018 1:44 AM
To: [hidden email]
Subject: Elecraft Digest, Vol 169, Issue 10

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When replying, please edit your Subject line so it is more specific than
"Re: Contents of Elecraft digest..."

Today's Topics:

1. Wow, that was fast (Michael K Bottles)
2. Re: K-Pod questions (Bill Frantz)
3. WTB Wanted K3S (Michael Gillen)
4. Re: WTB Wanted K3S (Don Wilhelm)
5. KXPA100 (Charles Carlon)
6. Re: KXPA100 (Grant Youngman)
7. Re: KXPA100 (Rick WA6NHC)
8. K3 Strange Power Output Problem (Ed G)
9. Tilt Stand for KPA1500? (Dauer, Edward)
10. Re: KXPA100 (Charles Carlon)
11. Re: K3 Strange Power Output Problem (Mark E. Musick)
12. Re: Tilt Stand for KPA1500? (Jim N7US)
13. Re: KXPA100 (John_N1JM)
14. Re: K3 Strange Power Output Problem (Ed G)
15. Re: Tilt Stand for KPA1500? (Mark E. Musick)
16. [OT] Arlan Lightweight Travel Headsets (Grant Youngman)
17. Re: K3 Strange Power Output Problem (Brian Hunt)
18. P3 display versus FlexRadio (Jim N7US)
19. Remote Tuning for Loop? (Phil Kane)
20. Re: P3 display versus FlexRadio (Wayne Burdick)
21. Re: Remote Tuning for Loop? (Grant Youngman)
22. Re: Remote Tuning for Loop? (Dave Cole (NK7Z))
23. Re: P3 display versus FlexRadio (Martin Sole)
24. Elecraft CW Net Announcement (kevinr)
25. Re: P3 display versus FlexRadio (Jim Brown)

----------------------------------------------------------------------

Message: 1
Date: Fri, 11 May 2018 21:40:29 -0700
From: Michael K Bottles <[hidden email]>
To: [hidden email]
Subject: [Elecraft] Wow, that was fast
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=us-ascii

Looks like I have found a local KAT-500 right here in Seattle.
Thank you Elecraft list.
Thank you Ed.

Sent from my iPad

------------------------------

Message: 2
Date: Fri, 11 May 2018 21:48:30 -0700
From: Bill Frantz <[hidden email]>
To: Rick Tavan <[hidden email]>
Cc: Elecraft Reflector <[hidden email]>
Subject: Re: [Elecraft] K-Pod questions
Message-ID:

<[hidden email]>

Content-Type: text/plain; charset=UTF-8; format=flowed

On 5/11/18 at 3:53 PM, [hidden email] (Rick Tavan) wrote:

>On Fri, May 11, 2018 at 2:51 PM, Fred Jensen <[hidden email]> wrote:
>
>>Thinking of replacing my Pigknob [which doesn't work when I'm running
>>remote] with a KPod. Couple of questions:
>>
>>1. If I'm reading the product description correctly the only
>>connection between the K3 and KPod is a cable to the RJ-45 jack on the
>>bottom edge of the Front Panel under the RIT/XIT?
>>
>
>Correct, if your K3 is appropriately configured. IIRC, there is a
>necessary mod to provide adequate power that isn't in all earlier K3's.
>I run my K*Pod with a single cable. N.B. It's a "special" cable with no
>connection between the Pins 1, not a standard 6-conductor RJ45 cable.

The KPod can also be run with its own power supply. I found the modification
to my K3 easy, but I also decided to practice SMD rework and remove the high
value resistor and replace it with the low value resistor instead of just
paralleling them. (Yeah, I know, I was just showing off.)

The bottom line is that you have a bunch of choices how you connect it and
power it. I went for minimum cables.

73 Bill AE6JV

-----------------------------------------------------------------------
Bill Frantz | When an old person dies, a | Periwinkle
(408)356-8506 | library burns. - Joe McGawon | 16345
Englewood Ave
www.pwpconsult.com | Irish Ethnographer | Los Gatos,
CA 95032

------------------------------

Message: 3
Date: Sat, 12 May 2018 07:17:50 -0700
From: Michael Gillen <[hidden email]>
To: Elecraft Reflector <[hidden email]>
Subject: [Elecraft] WTB Wanted K3S
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8

I?m now looking for a K3S. Would prefer 100W with KAT3A antenna tuner
however will consider all offers.

Let me know what you got!

73s
Michael
KK6RWK

------------------------------

Message: 4
Date: Sat, 12 May 2018 10:36:03 -0400
From: Don Wilhelm <[hidden email]>
To: Michael Gillen <[hidden email]>, Elecraft Reflector
<[hidden email]>
Subject: Re: [Elecraft] WTB Wanted K3S
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

Michael,

Elecraft has them, shipping off the shelf. You can select from the list of
options, and have your custom configured K3S with options configured, built
and tested, calibrated before shipment.
If you decide to order a kit, the boards will be pre-calibrated.

73,
Don W3FPR

On 5/12/2018 10:17 AM, Michael Gillen via Elecraft wrote:
> I?m now looking for a K3S. Would prefer 100W with KAT3A antenna tuner
however will consider all offers.
>
> Let me know what you got!

------------------------------

Message: 5
Date: Sat, 12 May 2018 13:03:33 -0400
From: Charles Carlon <[hidden email]>
To: Elecraft <[hidden email]>
Subject: [Elecraft] KXPA100
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8

Guys?

My KX3 is currently connected to my KXPA100 and is used to drive an
Ameritron AL-811. The setup is as follows

KX3??KXPA100??AL-811??MFJ-994B tuner?Daywa CN901?-Hexbeam

The KX3 and the KXPA100 auto-tunners are off. I tune with the MFJ with the
amp in bypass.
The Hexbeam is resonate at 1.5 or less before tuning. I us an Ameritron
ARB-704 to key the amp.

When I transmit the SWR LEDs On the KXPA100 are peaked out.
Daywa to the antenna shows less than 1.2 SWR.

Am I doing something wrong here. I am using about 20W from the KX3 to drive
the Amp to about 450W

Thanks
Charlie
N7CAC

------------------------------

Message: 6
Date: Sat, 12 May 2018 13:31:22 -0400
From: Grant Youngman <[hidden email]>
To: Charles Carlon <[hidden email]>
Cc: Elecraft <[hidden email]>
Subject: Re: [Elecraft] KXPA100
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8

Given you already have an SWR of 1.5 or less with the hexnbeam, the MFJ
tuner is just adding loss.

It could be the KXPA100 doesn?t like the AL-811 input circuits. If the SWR
is low (on the KXPA100) with the 811 bypassed, and high when the 811 is in
line, then I?d suspect the 811 input. You could try putting a dummy load on
the amp, the Daiwa 901 between the KXPA100 and the amp, and see how the KXPA
and Daiwa compare. Or turn on the antenna tuner on in the KXPA and see if
it can tune out the reactance of the amp input. You may just need to adjust
the 811 input network for a better SWR. The networks on my AL-1200 aged
into an SWR of around 2.5. I always ran my K3 autotuner when driving the
amp ? too lazy to take off the 927 screws to remove the AL-1200 cover, slide
it back, and adjust the input networks.

Grant NQ5T
K3 #2091, KX3 #8342

> On May 12, 2018, at 1:03 PM, Charles Carlon <[hidden email]> wrote:
>
>
>
> Guys?
>
> My KX3 is currently connected to my KXPA100 and is used to drive an
> Ameritron AL-811. The setup is as follows
>
> KX3??KXPA100??AL-811??MFJ-994B tuner?Daywa CN901?-Hexbeam
>
> The KX3 and the KXPA100 auto-tunners are off. I tune with the MFJ with

the amp in bypass.
> The Hexbeam is resonate at 1.5 or less before tuning. I us an Ameritron
ARB-704 to key the amp.

>
> When I transmit the SWR LEDs On the KXPA100 are peaked out.
> Daywa to the antenna shows less than 1.2 SWR.
>
> Am I doing something wrong here. I am using about 20W from the KX3 to
> drive the Amp to about 450W
>
>
>
> Thanks
> Charlie
> N7CAC
> ______________________________________________________________
> 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 Message delivered to
> [hidden email]

------------------------------

Message: 7
Date: Sat, 12 May 2018 10:43:17 -0700
From: Rick WA6NHC <[hidden email]>
To: [hidden email]
Subject: Re: [Elecraft] KXPA100
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

Probably a silly question:? Did you turn off the tuner in the amp (bypass
it)?? If not, it should be off.

Rick nhc

On 5/12/2018 10:31 AM, Grant Youngman wrote:
> Given you already have an SWR of 1.5 or less with the hexnbeam, the MFJ
tuner is just adding loss.
>
> It could be the KXPA100 doesn?t like the AL-811 input circuits. If the
SWR is low (on the KXPA100) with the 811 bypassed, and high when the 811 is
in line, then I?d suspect the 811 input. You could try putting a dummy load
on the amp, the Daiwa 901 between the KXPA100 and the amp, and see how the
KXPA and Daiwa compare. Or turn on the antenna tuner on in the KXPA and see
if it can tune out the reactance of the amp input. You may just need to
adjust the 811 input network for a better SWR. The networks on my AL-1200
aged into an SWR of around 2.5. I always ran my K3 autotuner when driving
the amp ? too lazy to take off the 927 screws to remove the AL-1200 cover,
slide it back, and adjust the input networks.

>
>
> Grant NQ5T
> K3 #2091, KX3 #8342
>
>> On May 12, 2018, at 1:03 PM, Charles Carlon <[hidden email]> wrote:
>>
>>
>>
>> Guys?
>>
>> My KX3 is currently connected to my KXPA100 and is used to drive an
>> Ameritron AL-811. The setup is as follows
>>
>> KX3??KXPA100??AL-811??MFJ-994B tuner?Daywa CN901?-Hexbeam
>>
>> The KX3 and the KXPA100 auto-tunners are off. I tune with the MFJ with

the amp in bypass.
>> The Hexbeam is resonate at 1.5 or less before tuning. I us an Ameritron
ARB-704 to key the amp.

>>
>> When I transmit the SWR LEDs On the KXPA100 are peaked out.
>> Daywa to the antenna shows less than 1.2 SWR.
>>
>> Am I doing something wrong here. I am using about 20W from the KX3
>> to drive the Amp to about 450W
>>
>>
>>
>> Thanks
>> Charlie
>> N7CAC
>> ______________________________________________________________
>> 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 Message delivered to
>> [hidden email]
> ______________________________________________________________
> 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 Message delivered to
> [hidden email]

------------------------------

Message: 8
Date: Sat, 12 May 2018 15:24:59 -0400
From: Ed G <[hidden email]>
To: "[hidden email]" <[hidden email]>
Subject: [Elecraft] K3 Strange Power Output Problem
Message-ID: <[hidden email]>
Content-Type: text/plain; charset="utf-8"

Hello,
I noticed this power output anomaly today while trying to work the NSS
station. My K3 was in split mode, transmitting on 10.113.5. While I was
listening on 9.448 (the NSS transmit frequency), I noticed that even though
my K3 power level was set at 100 watts, the K3 was only putting out about 20
watts. Two different power meters (the K3 internal meter and an outboard
LP-100A) gave me the 20 watt reading.
When I listened on my transmit frequency of 10.113.5, I was getting the
full 100 watts out. A quick investigation showed that as I tuned my
listening frequency down, I got the full 100 watts out until I got to about
9.850 mHz. When I listened below that, K3 transmit power on 10.113.5 dropped
immediately down to 20 watts.
Not sure why I am seeing this? One additional note ? I hear a relay
click inside the K3 when I tune my receive frequency below 9.850. I see the
anomaly with the subreceiver either on or off.
--Ed?

Sent from Mail for Windows 10

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------------------------------

Message: 9
Date: Sat, 12 May 2018 20:19:53 +0000
From: "Dauer, Edward" <[hidden email]>
To: "[hidden email]" <[hidden email]>
Subject: [Elecraft] Tilt Stand for KPA1500?
Message-ID: <[hidden email]>
Content-Type: text/plain; charset="utf-8"

Getting closer to placing an order for a KPA-1500 -- -- electrician is, at
last, coming Monday to see if or how 240 VAC can be brought to the shack.
Meanwhile, in reading the KPA1500 Manual I saw no mention of a tilt stand,
and the photos don?t show one. Is there, or could there be? Weight should
not be a problem. The KPA1500 RF deck weighs 22 lbs, compared to almost 31
lbs for the KPA500 with a KAT500 on top. If there is no official tilt
stand, could the front feet be propped up on home-made props to have the
angle match the neighboring K3 and P3, or would that degree of tilt restrict
access for the lower rear panel connectors? I can?t tell those detailed
dimensions from the pictorials . . . . Any other reason not to do
something like that?

Ted, KN1CBR

------------------------------

Message: 10
Date: Sat, 12 May 2018 16:28:41 -0400
From: Charles Carlon <[hidden email]>
To: Rick WA6NHC <[hidden email]>, [hidden email]
Subject: Re: [Elecraft] KXPA100
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8

The KX3 and the KXPA100 tuners are bypassed

Charlie

Sent from my iPad

> On May 12, 2018, at 13:43, Rick WA6NHC <[hidden email]> wrote:
>
> Probably a silly question: Did you turn off the tuner in the amp (bypass
it)? If not, it should be off.
>
> Rick nhc
>
>
>> On 5/12/2018 10:31 AM, Grant Youngman wrote:
>> Given you already have an SWR of 1.5 or less with the hexnbeam, the MFJ
tuner is just adding loss.
>>
>> It could be the KXPA100 doesn?t like the AL-811 input circuits. If the
SWR is low (on the KXPA100) with the 811 bypassed, and high when the 811 is
in line, then I?d suspect the 811 input. You could try putting a dummy load
on the amp, the Daiwa 901 between the KXPA100 and the amp, and see how the
KXPA and Daiwa compare. Or turn on the antenna tuner on in the KXPA and see
if it can tune out the reactance of the amp input. You may just need to
adjust the 811 input network for a better SWR. The networks on my AL-1200
aged into an SWR of around 2.5. I always ran my K3 autotuner when driving
the amp ? too lazy to take off the 927 screws to remove the AL-1200 cover,
slide it back, and adjust the input networks.

>>
>>
>> Grant NQ5T
>> K3 #2091, KX3 #8342
>>
>>> On May 12, 2018, at 1:03 PM, Charles Carlon <[hidden email]> wrote:
>>>
>>>
>>>
>>> Guys?
>>>
>>> My KX3 is currently connected to my KXPA100 and is used to drive an
>>> Ameritron AL-811. The setup is as follows
>>>
>>> KX3??KXPA100??AL-811??MFJ-994B tuner?Daywa CN901?-Hexbeam
>>>
>>> The KX3 and the KXPA100 auto-tunners are off. I tune with the MFJ with

the amp in bypass.
>>> The Hexbeam is resonate at 1.5 or less before tuning. I us an Ameritron
ARB-704 to key the amp.

>>>
>>> When I transmit the SWR LEDs On the KXPA100 are peaked out.
>>> Daywa to the antenna shows less than 1.2 SWR.
>>>
>>> Am I doing something wrong here. I am using about 20W from the KX3
>>> to drive the Amp to about 450W
>>>
>>>
>>>
>>> Thanks
>>> Charlie
>>> N7CAC
>>> ______________________________________________________________
>>> 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 Message delivered to
>>> [hidden email]
>> ______________________________________________________________
>> 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 Message delivered to
>> [hidden email]
>
> ______________________________________________________________
> 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 Message delivered to
> [hidden email]

------------------------------

Message: 11
Date: Sat, 12 May 2018 20:36:35 -0000
From: "Mark E. Musick" <[hidden email]>
To: "'Ed G'" <[hidden email]>, <[hidden email]>
Subject: Re: [Elecraft] K3 Strange Power Output Problem
Message-ID: <007d01d3ea30$ecb6a940$c623fbc0$@sbcglobal.net>
Content-Type: text/plain; charset="utf-8"

Hi Ed,
You don't have a transmit problem at all. It is not an anomaly.
The amateur band starts at 10.100 MHz. You shouldn't be transmitting below
that frequency. I'm surprised the K3 allowed you to do that.
The K3/K3S gives an out of band error and won't transmit beyond some amount
below and above the amateur band limits, I believe allowing for MARS
frequencies.
The reason for the relay click and your lower output is due to switching of
the bandpass filters in the K3. They are not designed to transmit down
there. This is also why you are seeing a reduction in receive sensitivity.
You need the BPF3A to receive outside the ham bands. Again, because you are
limited by the bandpass filters for the ham bands in the K3.
If you have more questions, let us know here on the reflector and we will
try to answer them for you.

73,
Mark, WB9CIF

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of Ed G
Sent: Saturday, May 12, 2018 7:25 PM
To: [hidden email]
Subject: [Elecraft] K3 Strange Power Output Problem

Hello,
I noticed this power output anomaly today while trying to work the NSS
station. My K3 was in split mode, transmitting on 10.113.5. While I was
listening on 9.448 (the NSS transmit frequency), I noticed that even though
my K3 power level was set at 100 watts, the K3 was only putting out about 20
watts. Two different power meters (the K3 internal meter and an outboard
LP-100A) gave me the 20 watt reading.
When I listened on my transmit frequency of 10.113.5, I was getting the
full 100 watts out. A quick investigation showed that as I tuned my
listening frequency down, I got the full 100 watts out until I got to about
9.850 mHz. When I listened below that, K3 transmit power on 10.113.5 dropped
immediately down to 20 watts.
Not sure why I am seeing this? One additional note ? I hear a relay
click inside the K3 when I tune my receive frequency below 9.850. I see the
anomaly with the subreceiver either on or off.
--Ed?

Sent from Mail for Windows 10

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
______________________________________________________________
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 Message
delivered to [hidden email]

------------------------------

Message: 12
Date: Sat, 12 May 2018 15:41:10 -0500
From: "Jim N7US" <[hidden email]>
To: "'Dauer, Edward'" <[hidden email]>, <[hidden email]>
Subject: Re: [Elecraft] Tilt Stand for KPA1500?
Message-ID: <020e01d3ea31$8fc49ac0$af4dd040$@n7us.net>
Content-Type: text/plain; charset="UTF-8"

I just got mine today (S/N 154, ordered 8/25). It does have a tilt stand,
which makes the bottom the same height as the K3S.

73, Jim N7US

-----Original Message-----

Getting closer to placing an order for a KPA-1500 -- -- electrician is, at
last, coming Monday to see if or how 240 VAC can be brought to the shack.
Meanwhile, in reading the KPA1500 Manual I saw no mention of a tilt stand,
and the photos don?t show one. Is there, or could there be? Weight should
not be a problem. The KPA1500 RF deck weighs 22 lbs, compared to almost 31
lbs for the KPA500 with a KAT500 on top. If there is no official tilt
stand, could the front feet be propped up on home-made props to have the
angle match the neighboring K3 and P3, or would that degree of tilt restrict
access for the lower rear panel connectors? I can?t tell those detailed
dimensions from the pictorials . . . . Any other reason not to do
something like that?

Ted, KN1CBR

------------------------------

Message: 13
Date: Sat, 12 May 2018 13:44:34 -0700 (MST)
From: John_N1JM <[hidden email]>
To: [hidden email]
Subject: Re: [Elecraft] KXPA100
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=us-ascii

Also try to use a different coax and/or length of coax between the KPXA100
and the amp.

John N1JM

--
Sent from: http://elecraft.365791.n2.nabble.com/

------------------------------

Message: 14
Date: Sat, 12 May 2018 16:45:02 -0400
From: Ed G <[hidden email]>
To: "Mark E. Musick" <[hidden email]>,
"[hidden email]" <[hidden email]>
Subject: Re: [Elecraft] K3 Strange Power Output Problem
Message-ID: <[hidden email]>
Content-Type: text/plain; charset="utf-8"

Hi Mark! I am transmitting on 10.113, and I do not change this. I am in
Split mode, listening for NSS (who is transmitting on 9.448). I am only
seeing about 20 watts out, even though the K3 Power setting says 100 watts.

If I change my RECEIVE frequency ? not my transmit frequency ? once I get
above 9.850 on RECEIVE, my power out returns to the expected 100 watts.

--Ed?

Sent from Mail for Windows 10

From: Mark E. Musick
Sent: Saturday, May 12, 2018 4:36 PM
To: 'Ed G'; [hidden email]
Subject: RE: [Elecraft] K3 Strange Power Output Problem

Hi Ed,
You don't have a transmit problem at all. It is not an anomaly.
The amateur band starts at 10.100 MHz. You shouldn't be transmitting below
that frequency. I'm surprised the K3 allowed you to do that.
The K3/K3S gives an out of band error and won't transmit beyond some amount
below and above the amateur band limits, I believe allowing for MARS
frequencies.
The reason for the relay click and your lower output is due to switching of
the bandpass filters in the K3. They are not designed to transmit down
there. This is also why you are seeing a reduction in receive sensitivity.
You need the BPF3A to receive outside the ham bands. Again, because you are
limited by the bandpass filters for the ham bands in the K3.
If you have more questions, let us know here on the reflector and we will
try to answer them for you.

73,
Mark, WB9CIF

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of Ed G
Sent: Saturday, May 12, 2018 7:25 PM
To: [hidden email]
Subject: [Elecraft] K3 Strange Power Output Problem

Hello,
I noticed this power output anomaly today while trying to work the NSS
station. My K3 was in split mode, transmitting on 10.113.5. While I was
listening on 9.448 (the NSS transmit frequency), I noticed that even though
my K3 power level was set at 100 watts, the K3 was only putting out about 20
watts. Two different power meters (the K3 internal meter and an outboard
LP-100A) gave me the 20 watt reading.
When I listened on my transmit frequency of 10.113.5, I was getting the
full 100 watts out. A quick investigation showed that as I tuned my
listening frequency down, I got the full 100 watts out until I got to about
9.850 mHz. When I listened below that, K3 transmit power on 10.113.5 dropped
immediately down to 20 watts.
Not sure why I am seeing this? One additional note ? I hear a relay
click inside the K3 when I tune my receive frequency below 9.850. I see the
anomaly with the subreceiver either on or off.
--Ed?

Sent from Mail for Windows 10

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This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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Message: 15
Date: Sat, 12 May 2018 20:49:23 -0000
From: "Mark E. Musick" <[hidden email]>
To: "'Dauer, Edward'" <[hidden email]>, <[hidden email]>
Subject: Re: [Elecraft] Tilt Stand for KPA1500?
Message-ID: <007e01d3ea32$b6106af0$223140d0$@sbcglobal.net>
Content-Type: text/plain; charset="utf-8"

Hi Ted,
The KPA1500 RF deck does have a tilt stand. I can't tell you how high it is
because I don't use it.
If you want, I'll be glad to check it for you.

73,
Mark, WB9CIF

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of Dauer, Edward
Sent: Saturday, May 12, 2018 8:20 PM
To: [hidden email]
Subject: [Elecraft] Tilt Stand for KPA1500?

Getting closer to placing an order for a KPA-1500 -- -- electrician is, at
last, coming Monday to see if or how 240 VAC can be brought to the shack.
Meanwhile, in reading the KPA1500 Manual I saw no mention of a tilt stand,
and the photos don?t show one. Is there, or could there be? Weight should
not be a problem. The KPA1500 RF deck weighs 22 lbs, compared to almost 31
lbs for the KPA500 with a KAT500 on top. If there is no official tilt
stand, could the front feet be propped up on home-made props to have the
angle match the neighboring K3 and P3, or would that degree of tilt restrict
access for the lower rear panel connectors? I can?t tell those detailed
dimensions from the pictorials . . . . Any other reason not to do
something like that?

Ted, KN1CBR

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Message: 16
Date: Sat, 12 May 2018 20:15:29 -0400
From: Grant Youngman <[hidden email]>
To: Elecraft <[hidden email]>
Subject: [Elecraft] [OT] Arlan Lightweight Travel Headsets
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=us-ascii

Wonder if anyone has tried the RS10SL headphone or RS50SL headset/mic with a
KX2/KX3, and if so what you think about them?

Grant NQ5T
K3 #2091, KX3 #8342

------------------------------

Message: 17
Date: Sat, 12 May 2018 17:45:57 -0700
From: Brian Hunt <[hidden email]>
To: "[hidden email]" <[hidden email]>
Subject: Re: [Elecraft] K3 Strange Power Output Problem
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=us-ascii

I ran into this today too, different frequencies though. I recently
installed the KBPF3 module and have it enabled full time. I think what
happened is the VFO-A frequency sets the BPF segment to be used and with the
wide split, it's not the right one for the VFO-B TX frequency to use.
Therefore you don't get enough drive through to the amplifier stages. The K3
will not switch BPF segments to go between RX and TX states. I got an
ERR:TXG indicating something was afoul in the BPF setup.

I tried to set the KBPF3 to 'not installed' but botched it since I didn't
remember you had to cycle K3 power to reconfigure that option. By then NSS
had faded into the noise. Oh well, got 'em on one band.

73, Brian, K0DTJ

------------------------------

Message: 18
Date: Sat, 12 May 2018 19:54:16 -0500
From: "Jim N7US" <[hidden email]>
To: "Elecraft Reflector" <[hidden email]>
Subject: [Elecraft] P3 display versus FlexRadio
Message-ID: <027801d3ea54$ed162400$c7426c00$@n7us.net>
Content-Type: text/plain; charset="us-ascii"

I saw a demo last night of the FlexRadio bandscope. It showed the noise
well above, on the Y-axis, the bottom of the display, but the waterfall
didn't show the noise, just the signals on the band.

When I set the REL LVL on my P3 so the noise floor is below the noise, the
waterfall is blue from the noise, making it difficult to see the signals.

Can someone enlighten me as to why the displays are so different?

73, Jim N7US

------------------------------

Message: 19
Date: Sat, 12 May 2018 19:38:11 -0700
From: Phil Kane <[hidden email]>
To: Elecraft Reflector <[hidden email]>
Subject: [Elecraft] Remote Tuning for Loop?
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8

Looks like my K2 could be orphaned for a while because the Apartment
Management's latest Patrol Harridan decided that my 30-foot-long "Emergency
Antenna" (end-fed wire) from my porch to the nearest tree had to come down
after 4 years - took a lot of looking to see it in the first place. I'm not
all that sad, because the way it operated, the outside of the coax shield
was the counterpoise, bringing RF into the radio room that locked up my
laptop if I wanted to use it for digital comms.

With that said -- I am considering an Alex-Loop which will meet the
aesthetic requirements of the Patrol Harridan (who fortunately is
"overlooking" the 3 J-Poles) but it is impossible for me to install the loop
on the porch and tune it from the radio room 30 feet and two rooms away. Is
there any solution for a remote tuner? Or haven't I looked far enough?

73 de K2ASP - Phil Kane
Elecraft K2/100 s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon

------------------------------

Message: 20
Date: Sat, 12 May 2018 19:43:55 -0700
From: Wayne Burdick <[hidden email]>
To: Jim N7US <[hidden email]>
Cc: Elecraft Reflector <[hidden email]>
Subject: Re: [Elecraft] P3 display versus FlexRadio
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=us-ascii

Hi Jim,

They may be automatically calculating a long-term-average noise floor, then
subtracting it from the waterfall. The P3 could do the same thing. But
automatic noise subtraction would have the same disadvantage as slow AGC: a
temporary rise in the noise floor would mask weak signals for the duration
of the averaging time constant.

You can achieve the same thing manually, without the averaging issue. Simply
adjust the REF level such that the noise floor is just at or slightly below
the line. The waterfall will then be nearly invisible except for signals and
higher noise peaks.

Wayne
N6KR

----
http://www.elecraft.com

> On May 12, 2018, at 5:54 PM, Jim N7US <[hidden email]> wrote:
>
> I saw a demo last night of the FlexRadio bandscope. It showed the
> noise well above, on the Y-axis, the bottom of the display, but the
> waterfall didn't show the noise, just the signals on the band.
>
>
>
> When I set the REL LVL on my P3 so the noise floor is below the noise,
> the waterfall is blue from the noise, making it difficult to see the

signals.

>
>
>
> Can someone enlighten me as to why the displays are so different?
>
>
>
> 73, Jim N7US
>
>
>
> ______________________________________________________________
> 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 Message delivered to
> [hidden email]

------------------------------

Message: 21
Date: Sat, 12 May 2018 22:46:21 -0400
From: Grant Youngman <[hidden email]>
To: [hidden email]
Cc: Elecraft Reflector <[hidden email]>
Subject: Re: [Elecraft] Remote Tuning for Loop?
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8

Look at the W4OP loop. The W4OP offers manual and remote tuning options. I
have the W4OP (with manual and remote tuning units) and the AlexLoop The
W4OP is the one that gets used the most, although it?s a bit heavier when
packed and can?t really be hand held. Both are nice products.

Grant NQ5T
K3 #2091, KX3 #8342

> On May 12, 2018, at 10:38 PM, Phil Kane <[hidden email]> wrote:
>
>
> Looks like my K2 could be orphaned for a while because the Apartment
> Management's latest Patrol Harridan decided that my 30-foot-long
> "Emergency Antenna" (end-fed wire) from my porch to the nearest tree
> had to come down after 4 years - took a lot of looking to see it in
> the first place. I'm not all that sad, because the way it operated,
> the outside of the coax shield was the counterpoise, bringing RF into
> the radio room that locked up my laptop if I wanted to use it for digital

comms.

>
> With that said -- I am considering an Alex-Loop which will meet the
> aesthetic requirements of the Patrol Harridan (who fortunately is
> "overlooking" the 3 J-Poles) but it is impossible for me to install
> the loop on the porch and tune it from the radio room 30 feet and two
> rooms away. Is there any solution for a remote tuner? Or haven't I
> looked far enough?
>
> 73 de K2ASP - Phil Kane
> Elecraft K2/100 s/n 5402
>
> From a Clearing in the Silicon Forest
> Beaverton (Washington County) Oregon
> ______________________________________________________________
> 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 Message delivered to
> [hidden email]

------------------------------

Message: 22
Date: Sat, 12 May 2018 19:49:01 -0700
From: "Dave Cole (NK7Z)" <[hidden email]>
To: [hidden email]
Subject: Re: [Elecraft] Remote Tuning for Loop?
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

Hi Phil,
I use a cordless phone, or a cell phone, contact the second phone, and tune
my loop from about 100 feet for most noise. Once you get the hang of it,
you can hit a 1:1 almost every time...

I have a homebrew Alex Loop running now, outside, and doing WSPR. Go to
WSPR net, and select NK7Z, then look at the last few hours... I got all
sorts of DX yesterday, which you can see by looking at the last 12 hours...

If all of that fails, I will be constructing a 12 foot loop for 40, and
building a remote tuning device out of a servo and an airplane controller.
I can share with you what I end yup with if you want.

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 05/12/2018 07:38 PM, Phil Kane wrote:
>
> Looks like my K2 could be orphaned for a while because the Apartment
> Management's latest Patrol Harridan decided that my 30-foot-long
> "Emergency Antenna" (end-fed wire) from my porch to the nearest tree
> had to come down after 4 years - took a lot of looking to see it in
> the first place. I'm not all that sad, because the way it operated,
> the outside of the coax shield was the counterpoise, bringing RF into
> the radio room that locked up my laptop if I wanted to use it for digital
comms.

>
> With that said -- I am considering an Alex-Loop which will meet the
> aesthetic requirements of the Patrol Harridan (who fortunately is
> "overlooking" the 3 J-Poles) but it is impossible for me to install
> the loop on the porch and tune it from the radio room 30 feet and two
> rooms away. Is there any solution for a remote tuner? Or haven't I
> looked far enough?
>
> 73 de K2ASP - Phil Kane
> Elecraft K2/100 s/n 5402
>
> From a Clearing in the Silicon Forest Beaverton (Washington County)
> Oregon ______________________________________________________________
> 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 Message delivered to
> [hidden email]
>

------------------------------

Message: 23
Date: Sun, 13 May 2018 10:05:33 +0700
From: Martin Sole <[hidden email]>
To: [hidden email]
Subject: Re: [Elecraft] P3 display versus FlexRadio
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

I'm not all that familiar with the Flex stuff but in some SDR software
display systems it is possible to adjust the waterfall sensitivity and
contrast independent of any spectrum bandscope position adjustment. It is
often also possible to have any signal levels indicated by such displays
bear no relationship to any accurate level.The P3 waterfall contrast changes
with the reference level setting which in itself changes with the displayed
bandwidth, seems appropriate. Scale will adjust the sensitivity I think.

In the situation I have here where it is unusual to have any signals on any
band at more than S7-8, nearest centre of any appreciable activity is
several thousand miles away so mostly fairly weak signals, in this case I
find having the waterfall in monochrome, spectrum display is still in
colour, to be quite an advantage. It is quite possible to set an almost
black waterfall with signals barely above the noise floor showing as grey
marks, often much more discernible than anything on the spectrum display.

Martin, HS0ZED

On 13/05/2018 07:54, Jim N7US wrote:
> I saw a demo last night of the FlexRadio bandscope. It showed the
> noise well above, on the Y-axis, the bottom of the display, but the
> waterfall didn't show the noise, just the signals on the band.
>
>
>
> When I set the REL LVL on my P3 so the noise floor is below the noise,
> the waterfall is blue from the noise, making it difficult to see the
signals.

------------------------------

Message: 24
Date: Sat, 12 May 2018 22:14:35 -0700
From: kevinr <[hidden email]>
To: [hidden email]
Subject: [Elecraft] Elecraft CW Net Announcement
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

Good Evening,
??? There are a few tiny spots on the sun.? The solar wind has steadied
since last week but there are still aurora present. Hopefully the noise is
less than last week and propagation better.

Please join us tomorrow on:

14050 kHz at 2200z Sunday (3 PM PDT Sunday) ? 7045 kHz at 0000z Monday (5
PM PDT Sunday)

73,
Kevin. KD5ONS

_

------------------------------

Message: 25
Date: Sat, 12 May 2018 22:43:35 -0700
From: Jim Brown <[hidden email]>
To: [hidden email]
Subject: Re: [Elecraft] P3 display versus FlexRadio
Message-ID:
<[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

Hi Martin,

I have a somewhat different solution to your problem, and it consists of
multiple parts.

First, I set averaging to maximum (I set it years ago, don't ask me
numbers). :)

Second, I set Scale to 24 dB when I'm not contesting, 32 dB for 100W
contests, 42 dB for high power contests.

Third, I set reference level so that the noise level as at the bottom of the
amplitude display , which causes the waterfall to be black where there are
no signals.

Fourth, I set Tracking Mode ON, so that when I tune, the signals on the band
stay put as I tune across them. Without this setting, Averaging would reset
every time the changes frequency.

A major benefit of averaging is that it causes random noise to cancel itself
out, leaving only signals (and noise that is NOT random). Now, both the
amplitude display and the waterfall will show only real signals plus noise
that's more or less stable in frequency, like clocks from microprocessors,
and "lumps" of noise which may drift a little or a lot.
Those lumps are generated by power-handling devices like switch-mode power
supplies and variable-speed motor controllers.

I don't use monochrome display, but I do see signals against a nearly black
background.

73, Jim K9YC

On 5/12/2018 8:05 PM, Martin Sole wrote:
> In the situation I have here where it is unusual to have any signals
> on any band at more than S7-8, nearest centre of any appreciable
> activity is several thousand miles away so mostly fairly weak signals,
> in this case I find having the waterfall in monochrome, spectrum
> display is still in colour, to be quite an advantage. It is quite
> possible to set an almost black waterfall with signals barely above
> the noise floor showing as grey marks, often much more discernible
> than anything on the spectrum display.

------------------------------

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End of Elecraft Digest, Vol 169, Issue 10
*****************************************

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