[Elecraft] Raspy audio from K2 - conclusion

Don Wilhelm w3fpr at earthlink.net
Sun Dec 17 09:59:36 EST 2006


John,

You have substantiated that the problem was a BFO alignment problem.
I would strongly urge you to check the FL1 passband using Spectrogram just
to be certain you have the BFOs set correctly.  It is easier to use than to
tell you how to do it.  There are instructions for using Spectrogram in the
K2 Dial Calibration article at my website http://w3fpr.qrpradio.com

73,
Don W3FPR

> -----Original Message-----

> The instructions for optimizing the BFOs say you can move the BFO as
> much as +/- 200 Hz from the frequencies in Table 3.  Moving them about
> 100 Hz removed the raspiness,  but I had to move them about 350 Hz total
> before I considered the signal optimum.  Is this setting OK or should I
> back down to around 200 Hz?
>
>
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