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Okay so this is what I have gathered so far… They are model trc-89 21-1611 300mW 3ch Walkie talkies. They use RX/TX type crystals. The crystals are removable and they came with channel 14 crystals wich the TX are at 27.125MHz and the RX are 26.670MHz and I believe they are set for FM transmition.hope this helps. Thank you. Also they support a rx/TX crystals from channel 1-40 and I have all the frequencys for them it doesn’t have to be channel 14 but that’s the channel they came with but there are holders for two more crystal sets. Ive contacted ICM and they said they need more info on the type of crystals they are.