[Elecraft] Calibration of BFO

[Tom Hammond NØSS]

Rich:

>However, on USB and CWR the received frequency shifts between 10 to 50 Hz.
>(After reading Tom N0SS post I played with it for about an hour and got it
>down to about 10 Hz for most filters.)  This is probably not a big deal on
>CW as long as I select the filter before I call CQ or before I answer one.
>and probably not that big a deal even if I didn't.  The problem is mostly
>with PSK when I am using a Soundcard TU.  My transmitted signal will be
>offset by whatever the difference is because of this offset (the transmitted
>signal only uses FL1) and this causes the qso to walk up the band when I try
>and use a filter.
>
>Should I give up on this and just use LSB for PSK? Don't have the problem
>with RTTY as I use the normal convention for RTTY and don't use the
>"reverse" function of the software to correct for using USB.

Consider NOT using the OP1 filter for PSK31. You can set the other three 
filters FL2 thru FL4 to wide mid and narrow bandwidths as well... possibly, 
you can find settings which don't shift using strictly the CW filters.

Note that it is NOT at all unusual to have a 10Hz - 20Hz frequency shift 
when switching between filters. If you managed to get it down to 0Hz shift, 
it was almost a fluke. Remember, PSK31 was not considered when the K2 was 
designed... at least, I don't htink it was considered... maybe not even 
available at that time.

73,

Tom Hammond   N0SS