From: Wes
To:elecraft@mailman.qth.net
Subject: Re: [Elecraft] K Line: Signal loss in a QSO
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It is not in the manual, but has appeared here many times, without logical
explana
Line: Signal loss in a QSO
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I have a K3, P3, KAT500 and KPA500. I was listening in the middle of a QSO and
lost signal.
I tested my antenna with a back up transceiver and the antenna and coax are
good.
The P3 still shows signals but only
On 16/01/2022 18:40, elecraft-requ...@mailman.qth.net wrote:
It is not in the manual, but has appeared here many times, without logical
explanation.
It actually is in the manual, but not very clearly: K3S rev A1 manual
page 67 (TXGN parameter), K3 rev D10 manual page 62 (TXGN parameter).
At risk of error paraphrasing prior discussions, let me try to explain:
Elecraft implemented the implicit gain calibration at 5 and 50W believing
that it was a subtle and harmless way of triggering gain cal. Users could
do it intentionally (albeit tediously) and if it happened accidentally it
That begs the questions of why it ISN'T in the manual or tech note
addendum, and why it hasn't been addressed by Elecraft.
Worst case, it would make more sense to have the gain calibration done
at some odd power level like 5.3 watts and 53 watts instead of power
levels that users would
You may or may not consider this logical, but: The description of the
transmitter gain calibration procedure in the manual does not call up any
special calibration menu. It just says transmit a carrier at exactly 5.0
watts or exactly 50 watts. Apparently the firmware uses these power level
Jim,
Thank you for the reference to the post confirming the 5/50 watt issue!
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 1/16/22 06:27, Jim McCook wrote:
FYI once again. You
FYI once again. You can confirm this with Elecraft support. Jim
https://www.mail-archive.com/elecraft@mailman.qth.net/msg252041.html
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I will dangerously rely on memory. I recall a discussion, no doubt one
of many similar, simply describing the amp as most efficient at full
power, not that any output power level should be avoided. After all,
every amp is designed around some quiescent current.
73,
Mike ab3ap
On 1/16/22
It is not in the manual, but has appeared here many times, without logical
explanation.
Wes N7WS
On 1/16/2022 6:52 AM, j...@kk9a.com wrote:
I have not heard this either. Is this in the manual? 5 watts would be a
tough output to avoid if you enjoy QRP.
John KK9A
KE8G wrote:
Hmm, I've never
See:
https://mailman.qth.net/pipermail/elecraft/2022-January/288276.html
for a reference to the original post, which I can not locate...
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
I have not heard this either. Is this in the manual? 5 watts would be a
tough output to avoid if you enjoy QRP.
John KK9A
KE8G wrote:
Hmm, I've never heard that 5 or 50 watts of power shouldn't be run.
73 de KE8G - Jim
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Elecraft
Hopefully someone remembers the thread title, I don't.
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 1/16/22 04:52, KE8G wrote:
Hmm, I’ve never heard that 5 or 50 watts of power
Hmm, I’ve never heard that 5 or 50 watts of power shouldn’t be run.
73 de KE8G - Jim
On Sat, Jan 15, 2022 at 18:54 Dave (NK7Z) wrote:
> If I remember correctly, 5 watts is a power level to avoid... As is 50
> Watts. I believe it messes with the TX calibration.
>
> 73, and thanks,
> Dave
If I remember correctly, 5 watts is a power level to avoid... As is 50
Watts. I believe it messes with the TX calibration.
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 1/15/22
Back the power off below the 12 watts, and see if you get anything.
Same thing had happened to me today, so running K3s at 5 watts, and the
Kpa500 is putting out 80-90wstts
73 de KE8G - Jim
On Sat, Jan 15, 2022 at 13:04 Ronnie Hull wrote:
> I had the exact same problem! It’s been Elecraft for
I had the exact same problem! It’s been Elecraft for a few months now.
Hopefully I will get it back before summer
W5SUM
Sent from my iPhone
> On Jan 15, 2022, at 11:22 AM, Linda M wrote:
>
>
> __
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> Home:
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Hi,
If it were me, I would bypass everything and feed the antenna directly
to the K3. If things work after that step, it is not the K3.
Again, if it were me, I would begin adding things back, one at a time,
until the failure returns. At that point, I would conclude that the
last device
I have a K3, P3, KAT500 and KPA500. I was listening in the middle of a QSO and
lost signal.
I tested my antenna with a back up transceiver and the antenna and coax are
good.
The P3 still shows signals but only hiss comes out of the K3’s speaker.
Keying the k3 by pressing the attached foot
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