Posted 10/18/2020 06:40 (#8551134 - in reply to #8551078) Subject: RE: Keying two way radio mike kills AM/FM radio
You haven't mentioned what brand of tractor. We never had any problems till we purchased Case-IH and New Holland tractors with tier 4a DEF Emissions systems. They must have changed the wiring harnesses at that time. Helps to run very heavy dedicated power wires to the radios and route them away from any factory wiring. Seem to get by till you turn the field lights on. Often wonder it is all related to the hybrid 12 / 24 volt electrical system on these tractors.