[Elecraft] (K3) Filter Set-up

[Rich]

Hi

I have the 2.7, 1.8 and 250hz filters installed in FL1, FL2 and FL3 in my
K3.

Using the width I can change these filters and see the filter change as I
get narrower. When I get to FL3 which has the 250hz filter, the noise level
disappears totally and there is nothing on the S-meter.

When on 0.30 BW there is about S3 of noise.

This happens in any mode, CW or DATA.

I have looked at the filter set-up using the K3 program on my pc and can't
see anything.

Could it be a duff filter or is there anything else I can check?

Thanks


Rich