[Elecraft] BFO low freq too high -- a problem or not?

Rob Locher W7GH rob at idiompress.com
Tue Jan 31 13:05:44 EST 2006


When I did Alignment and Test Part II the first time, my BFO low frequency  
was slightly too high: 4912.85 kHz, which is not <= 4912.7 kHz (the  
official specification).  After having done Assembly Part III and having  
checked the calibration of the master oscillator using WWV, I know that  
the calibration of the master oscillator is not the fault.

I carefully calibrated my filters using Tom NØSS's Spectrogram procedure.   
According to my filter calibration table, the lowest frequency required of  
the BFO is 4913.20 kHz, which is still 0.35 kHz higher than my BFO's  
minimum frequency.  Is my slightly-out-of-spec BFO really a problem?

73,
- Rob W7GH



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