[Elecraft] S-Meter calibration (K2)

[Don Wilhelm]

Werner,

There is no 'correct' answer, each operator can make his own choice on that.
I usually set the S-meter on 40 meters with a 50 uV signal and the 
preamp off.  Other bands may vary somewhat, but this seems to give me 
the most consistent behavior.  Note that I usually operate with the 
preamp on for 20 meters and higher bands.  Whether I use the preamp or 
not on 30 meters depends on the state of atmospheric noise at the time.  
If atmospheric noise is evident on any band without the preamp, using 
the preamp will not be a benefit.  Switch the antenna on and off to tell 
how much atmospheric noise is present - if the receiver noise level 
increases when the antenna is connected, then the atmospheric noise is 
higher than the receiver noise floor and more preamp gain will not be of 
benefit for hearing signals.

73,
Don W3FPR

Dr. Werner Furlan wrote:
> hello all, 
>
> I have a question regarding s-meter calibration. When I feed the 50µV signal 
> into the K2, do I have to switch the preamp on or off for a correct S9 
> reading?
>
> This was the only question left after reading this:
> http://www.mail-archive.com/elecraft@mailman.qth.net/msg08561.html
>
> 73! de Werner
> OE9FWV
>
>
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