SO-3 TCXO (Hi-stability crystal controlled oscillator) Discontinued model Accessories SelectedAccessoryFor: (Consult your local dealer for all available accessories)TS-480HXHF/6m Base/Mobile Transceiver (200 watts/no ATU)TS-480SATHF/6m Base/Mobile Transceiver (100 Watts/Built-In ATU)TS-590SHF/6m Base StationTS-590SGHF/6m Base Station