[Elecraft] K3S Power Issue

[Edward R Cole]

Normally, I do not respond to most of these issues; Don is an expert 
and gives great advice.

What you last wrote shows that you NEED to do a TX Gain 
Calibration.  Your external power meter shows full output, so the K3s 
meter ckts need to be re-calibrated to agree with the ext. meter 
reading (assuming you trust the external meter).

Be sure that you use a 50-ohm non-reactive load (translation: a good 
dummy load).  If you measure into an antenna with any SWR > 1.05 the 
output power will not read accurately.  Power meters (SWR meters) are 
actually RF voltmeters and require a "perfect" 50-ohms to read correctly.

GL sounds like you are close to "fixing" your issues.

73, Ed - KL7UW

Date: Mon, 27 Mar 2017 14:17:24 -0700 (MST)
From: Serge_VA3SB <smbertuzzo at bell.net>
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3S Power Issue

   Thank you very much for your prompt response Don. 
   I have conducted a couple of additional tests and with an external 
power meter, even though the K3S indicates a power output of 75-80W, 
my external meter shows a power output of 100W. 
   I will tighten all of the connections and my try some other cables 
as I only have the equipment connected on my desktop in the interim. 
   Thanks again for your assistance.
   73
   Serge
   VA3SB


73, Ed - KL7UW
   http://www.kl7uw.com
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