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

[wayne burdick]

On Feb 10, 2009, at 9:51 AM, Kok Chen wrote:

> If the 1st LO were to move by itself, we would need to know where 
> these magic frequencies are. One possibility is that if you only plan 
> to nudge the receive VFO, we can just keep our receive VFO fixed to a 
> non-magic frequency and always tune the receiver by offsetting into 
> the LP-PAN's output.
>
> The best would be an option to be able to choose not to nudge the 1st 
> LO.

The 1st LO and BFO must be moved to effect either SHIFT or birdie 
map-out, because the 2nd LO and 1st IF filter are fixed. If this has an 
adverse impact on LP-Pan, I'll work out the needed CAT changes with 
Larry.

>
> Speaking of the SHIFT moving the 1st LO frequency, does the SHIFT knob 
> also move where the birdies occur?

Yes.

>   I haven't installed my second receiver yet and cannot perform the 
> experiment.

It applies to the main RX as well.

73,
Wayne
N6KR

>
> 73
> Chen, W7AY
>
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>
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