[RFI] ebay line filters

[KD7JYK DM09]

"standing waves. If you happen to have a fairly long cable, it is possible 
you can identify certain nodes and nulls along its length based of the 1/4 
wavelength of the emission. If it is broadband RF however, you may not be 
able to diagnose this."

A sooner, rather than later plan is to build a chamber of some sort probably 
an adequately sized TEM cell and use an SDR receiver to study items within 
across a wide range.  I have Singer and Marconi spectrum analyzers, but I am 
finding them bulky (Singer, 220#) and limited compared to some of the SDR 
work I'm seeing out there.

I think with the SDR and adequate probes I can trace noise to a fraction of 
an inch or individual traces.

Kurt