1956 AdvertisementHigh Band AC StationGreen finish: likety Syracuse productionWider case to accomodate narrow option panelBlue finish denotes Lynchburg productionLater mobile unit with transistorized power supplyTransistor PS allows option space in standard caseMobile Control Unit1960s Mobile Telephone Control UnitReceiver partialTransmitterTransmitter290 KHz 6 coil receiver selectivityEarly low power transistorized supplyLoaded Progress Line Station