[Elecraft] APF

[Barry N1EU]

Forget it - full stop!

I just ran a spectral analysis of the current firmware versus the very first
APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE
ABSOLUTELY CONGRUOUS!  The APF implementation hasn't changed a bit (or a
byte).

Have a look:  http://n1eu.com/k3apf.gif

magenta and green plots are taken with width = 200hz
aqua and yellow plots are taken with width = 100hz

Barry N1EU
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