I’m not sure if this has been talked to death yet or not, but at least with respect to the ftm400 is has not. I would like to pass C4FM DN through something (likely an ftm400) from an HT to a node. On paper this should work. Transmit VHF DN from an FT2D to VHF on a FTM400 and then out UHF (analog) to a node. Once that UHF RF is received by another C4FM radio/node it should be intact right? RF is RF...how I understand this is just a a matter of what the endpoints are using to decode the C4FM signal. It Should not matter what the machines are doing in the middle with that DN RF...on paper, it should pass through should it not? In support of that idea...I can hear C4FM encoding on my Ft60...but of course it can’t decode it. If that signal is heard by any other C4FM radio it would know what to do with that RF as long as it was in DN mode. So...what am I missing? Why wouldn’t a FTM400xdr in analog cross repeat mode pass a C4FM transmission?