[Elecraft] Warning!

[Toby Pennington]

Dr. Schmidt,

I wonder if you were running with the newest BETA firmware for the K- Line?

I admit having the tuner start going into a tuning cycle as I was operating 
also.  I think I tested this while using a dummy load and still had the same 
problem.  So,  I reasoned it was not RF related.

I usually put the tuner in manual mode while operating to prevent auto mode 
from an inadvertant start up.

Some have never had this problem with their K-Line,  so since the problem is 
not universal,  it will be much harder to fix.

Toby  K4NH




----- Original Message ----- 
From: "Dr. William J. Schmidt, II" <bill at wjschmidt.com>
To: <elecraft at mailman.qth.net>
Sent: Sunday, February 09, 2014 7:51 AM
Subject: [Elecraft] Warning!


> Well last night while chasing some DX I experienced the same mysterious
> antenna tuning behavior that others have reported with the KAT500 where 
> the
> tuner just "takes off".  I had this happen on 40 meters while working 40
> meters over xmas down on PJ4 and saw the KPA500 amp emit a nice thick 
> cloud
> of black smoke.  The amp still worked, but last night it did the same 
> thing.
> and now 40 meters the KPA500 does nothing.  10-50mhz is ok (have not tried
> 1.8-5 yet . no antenna).  But when on 40. not even the SWR indicator 
> works.
> I think it roasted the filter section but I'll let Elecraft figure that 
> out
> since I'm flying without schematics.  I'll call and send them the power
> brick on Monday.  Antenna was 1.2:1 swr the whole time.  Just be careful 
> out
> there!
>
>
>
>
>
> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ/ PJ4HZ
>
> Owner - Operator
>
> Big Signal Ranch
>
> Staunton, Illinois
>
> email:   <mailto:bill at wjschmidt.com> bill at wjschmidt.com
>
>
>
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