"Telamon" wrote in message
...
In article . com,
"Steve" wrote:

How effective are these for tracking down sources of RFI?

http://www.zapchecker.com

Probably OK but they look geared for over 1 GHz by the antennas.

Quoted from site:

MODEL ZC 185 also has:
a.. a 3 MHz to 5 GHz bandwidth
That's the smallest bandwidth unit...