[Elecraft] K3 / RF gain - S meter issue

[Bruce Meier]

Dale,

 

Thanks for the suggestion.   I ran the test on both K3s and they are exactly
the same.   The range is from 240 (fully clockwise) to 02 (fully
counterclockwise)   If I turn the RF gain slow enough I can see both rigs
incrementing or decrementing (depending on turning direction) 1 count at a
time.

 

/Bruce

 

 

From: Dale Boresz [mailto:dmboresz at gmail.com] 
Sent: Friday, December 15, 2017 10:12 AM
To: Bruce Meier
Cc: Elecraft
Subject: Re: [Elecraft] K3 / RF gain - S meter issue

 

Hello Bruce,

 

Just to rule out any electrical or mechanical discontinuities in the RF gain
control itself, you can use the CONFIG > SW TEST > SCN ADC option to examine
the ADC reading as a function of rotation position for both RF gain pots and
both AF gain pots. In order to be able to see the "SW TEST" option, you will
first have enable  "TECH MODE"  by setting  "CONFIG > TECH MD to 'ON'

 

Once you've selected SW TEST > SCN ADC, slowly rotate your rf gain control
from one extreme to the other while watching the 'steps' in the VFO B
display, looking for any sudden step changes. The values I observe run
contiguously from 002 at full CCW to 239 or 240 at full CW. 

 

Good luck with your troubleshooting.

 

73, 

 

Dale - WA8SRA