[Elecraft] 160M module problem?

[Dave Benham]

OK -- 2nd attempt...

I've been playing around re-aligning my K2 after adding the version 2
upgrade tonight [last night].  Using Spectrogram, I noticed something I've
suspected with the 160M module I added quite a while back.  (I haven't
operated any 160 with the K2, yet).   If I have no antenna on the K2, and am
receiving just noise on 80M, and set the peak of the waveform to -40db, then
switch to 160M, the waveform drops at least 5 db on the Spectrogram screen
(preamp on in both cases).  Is this normal?  The effect is much more
pronounced with an antenna attached, but I don't
have a 160M antenna available where I'm doing this test so the resonance of
the antenna would be an additional factor.  If someone out there thinks I
might have a problem, what might it be?  When I built it, the alignment went
OK.

Thanks.

73,
Dave  K8TRF