Already noted. See the footnote here:
http://elecraft.365791.n2.nabble.com/Ref-Osc-Cal-Method-4-tc2595451.html
On 2/5/2014 8:35 AM, Lyle Johnson wrote:
"Zero beat" has to do with frequencies, not filter responses, and changing the
filter edge should have no practical effect on whether or not you are zero
beat. I say practical because the calculations done inside the radio coupled
with finite resolution of the various oscillators may result in a 1 or 2 Hz
difference, and _someone is bound to measure this :-) _
73,
Lyle KK7P
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