[Elecraft] Bad crystal filter ?

[Mike K2MK]

Hi Jamie,

I was just looking at the crystal filter configuration menu in the K3
Utility program and I noticed that there are check boxes for enabling the
filters for DATA mode. I don't know if this is for transmit and receive or
just transmit. On my K3 I have this box checked for all of my filters. I
also have all of them checked for CW.

73,
Mike K2MK


James Hall-2 wrote
> Working with my newly constructed K3S today, I noticed that receiving
> through the FL4 crystal filter (400 hz, 8-pole) was noticeably suppressed.
> Through the FL3 (1.8 kHz) filter, an RTTY signal would be nice and strong
> with good S-meter indications. Going to 400 Hz the signal would nearly be
> lost and I could not decode it. Going to FL5 (250 Hz), the S-meter would
> pick up again with strong signals.
> 
> There's not much to check on the Config menu except the FL4 GN and it's at
> max (8 db) - not much change. 
> 
> Is there something else I should do to deal with this ?
> 
> 73, Jamie
> WB4YDL 





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