FM320 Nominated Channel Modification

manual coverThe Phillips FM320 UHF CB has the facility to be locked to a particular channel. This is controlled by the existence or absence of a number of diodes on the circuit board. I’ve been looking into this for a telecommand project I’m working on. I wasn’t able to find the information of how to do this anywhere else, but it was pretty straight forward to figure out.

This post describes how modify the FM320 radio to set the nominated “NOM” channel.

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