Les, T/R = Transmit/Receive You will need a uhf relay with 3 contacts (depending on how much power you are running and what type of connectors you are using) - the common contact is the input from yo
Howard, This is 1296 with decent power, do you really want to recommend UHF connectors????? Tthere are so many mil surplus type N relays out there that it's not worth the chance. With the inherent SW