Re: Why K3 appears noisy?

Posted by Bill W4ZV on Dec 21, 2009; 2:53am
URL: http://elecraft.85.s1.nabble.com/Why-K3-appears-noisy-tp4181768p4196777.html

Dunc Carter - W5DC wrote

I haven't read all the details but I have the impression that you need
to be able to set 1 and 50 microvolts which requires rather considerable
attenuation for some common signal generators such as my Elenco SG
9500.  Is my impression correct?

For the RF Calibration Utility you only need a 50 uV source.  For S-Meter Calibration you need 1 uV in addition to 50 uV.  The factory defaults for both are for "average" units.  To achieve custom calibration for variations in individual units, you need to do individual calibrations.  The RF Calibration (in the K3 Utility) is totally automatic once you apply a 50 uV source.  S-Meter calibration (in the operating manual) is a little more involved but still quite easy to do.

73,  Bill