[Elecraft] K3 tx power issue

WILLIS COOKE wrcooke at flash.net
Thu Mar 19 12:32:20 EDT 2009


I have read on this forum that the startup as shutdown settings are not saved unless you power down with the POWER button.  The K3 reverts to previous settings if shut down by powering down with the power supply.

I have not experimented with this, but could this be the problem?

Like a previous commenter, I don't think it a wise practice to operate at 120 watts because the purity specs are not guaranteed above 100 watts.

Willis 'Cookie' Cooke 
K5EWJ


--- On Thu, 3/19/09, Frank Lammel <dd7zt at yahoo.de> wrote:

> From: Frank Lammel <dd7zt at yahoo.de>
> Subject: [Elecraft] K3 tx power issue
> To: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
> Date: Thursday, March 19, 2009, 7:15 AM
> Hello group,
> 
> a friend of mine has a strange problem with his tx power
> after upgrading 
> to firmware 3.03. However I couldn't reproduce it with
> my K3 (also 3.03) 
> so I'm asking here.
> 
> Following test: QRG 3,67 MHz LSB, no ATU, SWR 1:1,2 whistle
> to the 
> microphone (Heil) TX pwr max about 80 W
> 
> Tap xmit, pwr=120 W, again whistle to the mic, now also 120
> W. Now it is 
> ok until you change the band or power off/on the TRX. Then
> is starts 
> again with 80 W. About the same with USB. Also the same
> with ATU.
> 
> Without PA he has 8 W when whistle, then xmit=12 W, now
> also 12 W when 
> whistle.
> 
> ALC about 4-7 bars. A calibration with the utility
> didn't solved the issue.
> 
> Any ideas?
> 
> Many thanks in advance!
> 
> Frank, DD7ZT (for my friend Dennis, DG6HD)
> 
> 
> 
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