On 4/3/2023 2:00 PM, David Eckhardt wrote:
I have not sniffed it closely with the spectrum analyzers, but I don't
notice anything on HF.
You will if you do. :) It screams on LF and HF. I added several #31
multi-turn clamp-ons to both AC cable and cable to the dish (flat
rectangular panel). My probe is a vintage Kenwood TH-F6A talkie, which
has wide-band RX that defaults to a loopstick below 10 MHz, with a
software switch to the SMA. The RX is a block of wood below VHF, but
it's a very effective noise probe.
20 years ago, when working on an AES Paper on RF susceptibility of pro
condenser mics, I also learned that it's an effective RF injector if you
key it on and off near a victim and moving along attached cables (the
cables are RX antennas, where you inject varies current and voltage at
the victim). TX is 2M, 220, and 440 MHz.
73, Jim K9YC
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|