[Elecraft] K3 Birdies: firmware-based fix in progress

[wayne burdick]

On Feb 10, 2009, at 3:12 PM, O. Johns wrote:

> Wayne,
>
> Won't the birdies still show up on a panadapter?  They'll be 
> mysterious blips that disappear when you click on them to tune them 
> in?

It's possible, because the panadapter can show a much wider bandwidth 
than the K3's crystal filter allows into its own I.F. But such signals 
would have to be above the panadapter's noise floor (at the buffered 
I.F. output). Most birdies are inaudible with an antenna connected 
anyway, and some might be finding their way into the second rather than 
the first mixer, so it's hard to predict which ones would make tiny 
blips on the panadapter.

If this turns out to be an issue, I may be able to enhance the K3's 
"FI" command, which the LP-Pan uses to get the current I.F., to flag 
the occurrence of a mapped-out 100-Hz VFO segment.

73,
Wayne
N6KR

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