[TowerTalk] The Gremlin has been slain!

[Pat Villani]

What are you using for the 12v supply? Wall warts can be problematic. 
Seems that those that embed switching power supplies are pretty noisy. I 
recently pulled one out of the shack after tracking down all sorts noise 
coming from it. Seems that it was getting into the rig through the rig's 
DC power supply; most likely conducting back onto the AC line and 
sneaking back in through the power supply.

Pat
WB2GBF


K1TTT wrote:
> FINALLY!  The Gremlin has been slain! ...
**SNIP**
>  ... pull the power from the 20m
> and 160m meters just in case... SILENCE!  I'll test more after CQWW SSB, but
> my best guess is that something in the PEP circuit that gets 12v power was
> rectifying and resonating with the coax stubs on the different stations... 7
> sources, all in the shack!  Well, I did get lots of ugly stuff cleaned up
> outside anyway... maybe there were some other sources outside also... in any
> case now we can have a nice quiet contest without QRM from ourselves anyway!
>