Topband: Pulse noise source help!

[Tom W8JI]

>I have had a longstanding problem with pulse noise off my SW BOG. The 
>pulses are ~5khz wide, ~1 to 1.5 S units
> in amplitude, are spaced every 12 khz, do not drift (one always right on 
> 1825!), and extend from ~1700 to 2500 khz.

Not drifting at all indicates a system with a controlled clock frequency, 
like a digital system that is polling something.  Some wells do this, as do 
alarms and other things. A friend of mine has a booster pump system for his 
well because the well is much lower elevation than his home, but his noise 
cycles off and on. A home lighting control system could do that.

The Direct TV system next door covers that bandwidth, but it is drifty 
because it is from the SMPS in the unit.

Sounds like you need a sensitive portable receiver.