[RFI] 160 meter RFI

[Palomar Engineers]

For the 160 meter RFI: As a precaution put a ferrite balun (line isolator)
at the feedpoint and another as the coax enters the house. It is more
likely that direct radiation from the antenna is getting into the security
system picked up on the long wires from the sensors and being led to the
active circuit box. The cure is to put ferrite snap-ons on the cable
bundles right at the control box. This has been effective in many
installations. -- Jack, K6NY, Palomar Engineers