[Elecraft] 160M low sensitivity problem?

Wed Jan 2 12:16:14 2002

Dave,

A broad band noise generator may be the best thing to give you a 
quantifiable amount of noise to judge against.  Tom, N0SS, has constructed 
one that the Arizona Scorpions had as a kit for a while.  I think they ran 
out, but Tom may have boards or documentation available.

That will give you a source of noise that is uniform in terms of strength 
across a wide range of frequencies, and will allow you to do more accurate 
comparisons.

Tim Raymer
73 de KA0OUV
At 15:14 12/31/2001 -0500, David A. Belsley wrote:
>Dave:
>  I guess there is a bit of difference in the noise between 80 and 160 ...

>I've been playing around re-aligning my K2 after adding the version 2
>>upgrade tonight [2 nights ago, now].  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) -- this drop is quite
>>noticeable to the ear.  Is this normal?

Timothy A. Raymer               <[email protected]>
Missouri Department of Health   <[email protected]>
and Senior Services