Topband: THANKS - Preamp power supply & other noise

[N1BUG]

I got many replies on that one.  Thanks everyone!  I have 
solved the problem by liberal use of RF filtering thoughout 
the power supply.

To clarify what the problem was, whenever I used the preamp 
I suddenly had what appeared to be noise from switching 
power supplies on many frequencies where I have never 
experienced it before.  During investigation I found 
several volts of RF garbage on my AC mains!  Some of 
this managed to get through the PS and into the preamp.  
With added RF filtering I now have clean power to the 
preamp and the noise is gone.

This was a separate issue from the constant switcher noise I 
have at 1812-1820 kHz, though perhaps not completely 
unrelated.  If I come up with any useful information on 
that problem I will pass it along.

73,
Paul