[Elecraft] K1 Acting up on 20M and 30M

[Ron Polityka]

Hi Jerry,

 I had the same problem last year. I had the early 4 band board. I purchased 
the KFL1-4TRIMKIT. I tried to install the trimmers but I had a hard time. So 
I just purchased another four band kit. Now the K1 works great from the 
Appalachian Trail.

72 and Thanks,
Ron Polityka
WB3AAL
www.wb3aal.com
www.n3epa.org/

K1 - SN 01011
K2 - SN 01392



----- Original Message ----- 
From: <KG2JM.Elecraft at privatemailbox.org>
To: <elecraft at mailman.qth.net>
Sent: Saturday, October 29, 2005 4:15 PM
Subject: [Elecraft] K1 Acting up on 20M and 30M


>
> I have K1 SN950 with the 4 band module, Antenna Tuner and battery
> module.  It has been working like a champ for 3 years.  Now, it has
> decided it does not want to transmit on 20 meters and weakly on 30M.
>
> Radio works fine on all other bands.  Radio receives fine on all bands.
> When I attempt to tune on 20M, it fails to get a match, drops power to
> 0.1 (no matter how high I initially set it) and reports "Plo".  If I go
> in and check the SWR from the last tune (rx.x) it reports r0.0.  On 30M
> I do get a tune, I get a reported SWR of r9.9.
>
> If I check the antenna with a SWR Analyzer, it reports that the antenna
> is about 1.7 at the frequency I am trying to use on 20M and about 2.1 on
> 30M.
>
> I put a power meter in line with the radio:  It reports near zero output
> on 20M, about half power on 30M and appropriate power on all other
> bands.  If I swap out the antenna and put in a dummy load, the meter
> shows R6.3 and about half power on 30M, and Plo again and no measurable
> output on 20 M.
>
> I manually cycle through all the relays --- per the troubleshooting
> guide --- and they all are clicking --- none appear to be hung or dead.
>
> Any Ideas?
>
> Jerry - KG2JM
> K1 - 950
> K2 - 4550 (under construction)
>
>
>
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