Re: BITX40 with QRPLabs VFO
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Hi Kent
First check your firmware version, it is displayed at startup. For use with the BITX40 you need version s1.02a or above.?
Set the IF offset parameter to -012,000,000
Later you may refine that to the exact BFO frequency, if you can measure or infer it.
If you use the GPS and set the GPS Mode Baud parameter to 2 009,600 (which i suppose you did already) then the reference frequency is automatically calibrated.?
Otherwise (with no GPS) the Ref Freq parameter also needs to be set to the exact reference crystal frequency. If you set it to 27,004,000 the VFO will be within a couple of hundred Hz and you can improve on that later.
Please let me know if any other questions!
73 Hans G0UPL? ?
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