[RFI] Going hunting - Got new gear...

[Jim Brown]

This is great advice, and you'll find it in my tutorial on the topic.  
NA6O and NK7Z have also posted excellent guidance.

BUT -- this advice applies ONLY to IMPULSE noise, generated by arcing of 
some sort, much of it from power lines.  It does NOT apply to most noise 
generated by electronic sources, like switch-mode power supplies, power 
control equipment, variable speed motor controllers, and microprocessor 
based circuitry. These sources MUST be chased on the ham bands where we 
hear them, using methods outlined by NA6O, NK7Z, and in my tutorial. 
http://k9yc.com/KillingReceiveNoise.pdf and the slides for a talk at 
Visalia http://k9yc.com/KillingRXNoiseVisalia.pdf

73, Jim K9YC

On 7/24/2019 12:07 PM, KD7JYK DM09 wrote:
> I regularly search up to roughly 950 MHz.  Antennas are smaller, RFI 
> is relatively less, requiring one to be at the source, so you can 
> pinpoint it MUCH more easily.  When I hear it on HF, I go out and 
> search with VHF, and go up from there.  HF was good, until one pole 
> covered 18 square miles with noise.  Even the power company uses UHF 
> to pinpoint, figured they wouldn't spend $$$$$, or waste time if UHF 
> wasn't adequate.  I usually start around 120 MHz, when hearing noise 
> below that, move to around 325, then 4xx, then ~950 MHz.