[Elecraft] K3 / RF gain - S meter issue

[Bruce Meier]

Thanks for the responses – here are the answers to the questions and
suggestions and a new piece of DATA associated with selecting the SUB-RX.

 

1.       I checked the S-Meter configs for both of my K3s – they are exactly
the same.

a.       SMTR OF  016

b.      SMTR SC  016

c.       SMTR PK OFF

d.      SMTR MD ABS

 

2.       I then ran RF Gain calibration using “Factory default RF Gain
Calibration data” as I don’t have the necessary test equipment

a.       Ran for both main and sub-RX

 

Ø  No change to the symptom on the suspect K3

 

3.       Just for the heck of it – I reloaded the currently installed
firmware using the K3 Utility 1.15.12.7

a.       MCU: 05.54

b.      DSP (both main/sub): 2.88

c.       FPF: 01.26

 

Ø  NO CHANGE

 

4.       I then downloaded the most recent firmware – only change MCU is now
05.60

 

Ø  No change

 

5.       I then selected the SUB RX – not sure why.... just did it.

a.       When I turn the RF gain counter clockwise the S-Meter increases to
60db over S9

b.      When I turn the Sub RX off – the S-Meter only increases to S7

 

NOTE:  I never tried this before, but it appears to be an interesting piece
of data.  Does this now point toward the Main RX in some way?

 

 

73,

Bruce – N1LN