[Lowfer] MP on 137 kHz

[Mitch Powell]

> I have posted another capture of Mitch's signal at
> http://www.qsl.net/k0lr/MP137-0211.jpg

I spoke too soon - I had sent an e-mail about shifting frequency, and the
lines, and then I saw this note and great screen.
That's one for framing !
 
>I suspected that my "universal" preamp (used in combination with a 10-foot
> single-turn loop) was being overloaded and was producing intermodulation
> products. Switching to the "mobile" version (J310 FET and 12-volt supply) of
> the AMRAD active whip, most of the crud disappeared. Without the help of
> John's list, I would have blamed all of those lines on Loran! Now I need to
> make the universal preamp more "bulletproof" -- it works much better than
> the active whip in the 160 to 190 kHz range, but obviously has problems when
> it gets down into 137 kHz territory.

I use the "universal" on the K9AY. However, with this beacon going I haven't
been able to do any listening, particularly for Bill and his recent tests.
Complete de-sensing and intermods on the entire band below 500 kHz.

If you get one more screen capture- I would like to see how the shift fits
into the pattern of lines.  Now I know what the fellows across the Atlantic
were talking about - moving between and among the lines.
It is obviously going to be an environment that we will have to work in when
the time comes !

73
Mitch VE3Ot