[Elecraft] Bad crystal filter ?

[Don Wilhelm]

Jamie,

Is there any chance that you have installed the 400Hz filter backwards.  
Several have reported similar results from that problem.

73,
Don W3FPR

On 9/18/2015 3:30 PM, James C. Hall, MD 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.
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