1) Transmission Coax Cables
Between transceiver and power amp and, power amp and antenna.
Use a larger ferrite core and make loops or use a few cores (or more as you experiment), close to transmitter/transceiver/power amp.
RG-214, RG-213, RG-8, 9913, LMR400 or smaller
RG-214, RG-213, RG-8, 9913, LMR400, LMR600, LMR900 or smaller
You can make 3 loops over 9913 type flexible coax.
2) AC Power Lines
AC-DC power supply and AC power lines on transceiver and power amp
Use a lager ferrite core and make loops or use a few cores, close to power supply unit.
12AWG/3C, 14AWG/3C, 16AWG/3C, 18AWG/3C or samller
You can make a loop over 18AWG/3C (typically used for PC’s) power
12AWG/3C, 14AWG/3C, 16AWG/3C, 18AWG/3C or smaller
You can make 3 loops over 14AWG/3C (typically used for hi-power
3) DC Ground Lines
If separate DC ground is connected, use a ferrite core (Model 31500) and make loops (you can make 3 loops over 10AWG-strand), close to transceiver/power amp/tuner/etc.
4) Accessory Cables
When RF feedback exists, use a ferrite core (Model 31500) with loop(s) on cable connected to affected equipment. This may include mic, computer interface and other accessory cables.
NOTE: Ferrite core Model#311000 is recommended for heavy gage coax and power cable in order to make loops. For smaller cables, Ferrite core Model#31500 is recommended.