Since this thread has drifted off the initial question, and because
we're beating to to death :-) , let's end it for now.
73, Eric
Elecraft list modulator
On 11/2/2010 5:12 AM, Bill VanAlstyne W5WVO wrote:
> This failure modality, I believe, applies equally to all sorts of RF
> "connectors
On 11/2/2010 5:12 AM, Bill VanAlstyne W5WVO wrote:
> but because I trust the COMPANY to produce quality parts in
> whatever country they choose to manufacture in.
>
YES! I don't want to get into the politics of this, but the very sad
part is that so many US companies have been forced by world e
e COMPANY to produce quality parts in
whatever country they choose to manufacture in.
Bill W5WVO
-Original Message-
From: hb9ari
Sent: Tuesday, November 02, 2010 06:25
To: Elecraft-forum
Subject: Re: [Elecraft] K3 Intermittently loses gain
Hi Ron,
Hi had a similar problem some month
On 11/1/2010 23:36, KF4VTT wrote:
>
> Did this problem happen after you connected the amp?
>
> I ran into a similar problem. My external Ameritron T/R relay failed and
> held the amp in transmit. The only way I realized that the amp was stuck in
> transmit besides the diminished receive was the h
ntinue are
limited. Another reason to not take shortcuts on cables and connectors.
73, Ed - KL7UW
--
Message: 36
Date: Mon, 01 Nov 2010 14:59:22 -0700
From: Jim Brown
Subject: Re: [Elecraft] K3 Intermittently loses gain
Yes, Amphenol is more expensive than cheap junk. How
Hi Ron,
Hi had a similar problem some months ago.
Symptoms:
Suddenly loss of sensitivity ~ -20 to -40dB or more...
Transmission was always ok.
Measurement with miniVNA always correct (at ~0dBm power).
Moving some connections remove sometimes the loss of sensitivity.
(but all soldered or crimped
I'm reminded of a Field Day a few years ago where tested , tried and true
antennas suddenly didn't work anymore ... bad SWR's all over the place, goofy
noises, etc. etc.
Re-tested with different analyzers and dummy loads ... they checked out fine...
so what's going on when connecting extra coax
ke VP8NO
>
>
>
>
> - Original Message -
> From: "Jim Brown"
> Cc: "Reflector Elecraft"
> Sent: Monday, November 01, 2010 6:59 PM
> Subject: Re: [Elecraft] K3 Intermittently loses gain
>
>
>> On 11/1/2010 9:37 AM, Mike Harris wrote
Did this problem happen after you connected the amp?
I ran into a similar problem. My external Ameritron T/R relay failed and
held the amp in transmit. The only way I realized that the amp was stuck in
transmit besides the diminished receive was the heat I noticed coming off
the amp. I could s
to die in a ditch over it.
Regards,
Mike VP8NO
- Original Message -
From: "Jim Brown"
Cc: "Reflector Elecraft"
Sent: Monday, November 01, 2010 6:59 PM
Subject: Re: [Elecraft] K3 Intermittently loses gain
> On 11/1/2010 9:37 AM, Mike Harris wrote:
>> I hav
On 11/1/2010 9:37 AM, Mike Harris wrote:
> I have not been let down by the items I've bought from "The
> RF Connection".
I have bought some really lousy junk connectors from the RF Connection,
and when I tried to get real tech info from them on coax they wanted to
sell to a DXpedition, I got not
$8 for a PL259 or N-type.
Andrew stuff can be pretty eye watering.
Regards,
Mike VP8NO
- Original Message -
From: "Jim Brown"
To:
Sent: Monday, November 01, 2010 1:48 AM
Subject: Re: [Elecraft] K3 Intermittently loses gain
> On 10/30/2010 2:13 PM, Ron W3ZV wrote:
&
On 10/30/2010 2:13 PM, Ron W3ZV wrote:
> That leaves a couple of
> coax connectors, a balun and the ladder line feed. Sounds like the next
> step is a quick and dirty antenna to the RX antenna input.
Step #1 -- VERY IMPORTANT. Look at every coax adapter anywhere in your
station. If it does not s
Thanks everyone. To respond to the numerous good suggestions, happens on
all bands, but I use one antenna for all bands. I started the contest
with my antenna coming direct to the K3. Not having much luck, I changed
to the amp/external tuner. Happened both ways. That leaves a couple of
coax con
I agree, this sounds like something loose where transmitting can burn
it. Most of the time this has been something out in the weather.
Sometimes something so simple as a PL259 that didn't get tightened up.
Has also been ruined relay contacts in the amp subjected to hot
switching. Causes for that
Ron, if you have an amplifier in line, check the amplifier relay contacts.
I had to clean the relay contacts in my AL-80B about once per year.
The symptoms were just as you described.
73,
Chuck Guenther NI0C
Ron, W3ZV wrote:
K3 started to exhibit intermittent loss
of gain after a transmissio
Maybe not Ron. This was happening to me, on my K2, K3, and TS-850 when
I still had it. The problem turned out to be a bad connection where the
feedline was connected to the radiator. It didn't happen all the time,
but when it did, a short burst of RF seemed to complete the connection.
Easy
Started to play in the CQWWSSB. K3 started to exhibit intermittent loss
of gain after a transmission. Sometimes, stomping on the foot switch
brings it back up. Sometimes it takes a short transmission. No real
pattern to when it occurs. Receiver isn't totally deaf. Just way down.
Any ideas as t
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