[Elecraft] Re: CW and data

[wayne burdick]

Robert Klein wrote:

> I hope this isn’t too elementary for you folks, but I have not been 
> able to get my K3 to come close to accurately reading CW and data RX.

Hi Robert,

The CW and PSK31 decoders works best with a narrow bandwidth (50-150 
Hz). Once you have this dialed in, turn on CWT and dial the signal in 
close to the center of the passband. In the case of CW, hold TEXT DEC 
and use VFO A to adjust the "THR" (threshold) setting until the CWT bar 
flashes in time with the incoming code. I typically use threshold 
settings between 3 and 7. It takes a few seconds for the decoder to 
lock in, and of course it will be affected by band noise and fading. 
When tuning PSK31, use FINE steps (1 Hz) and tune very slowly, giving 
the decoder a chance to lock.

For RTTY, use a bandwidth of around 170-250 Hz. With CWT turned on, 
adjust for mark/space balance on the bar graph.

The K3 also does decode on transmit, so someone can look over your 
shoulder and get the gist of a CW or DATA QSO. I hope you ultimately 
find it useful, but if not, I'm open to suggestions.

73,
Wayne
N6KR


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