TDQ TRANSMITTER AND RCK RECEIVER

The TDQ, originally designed in 1943, was a 45 watt VHF AM transmitter operating in the frequency range of 115 to 156 mHz. It could operate on one of four crystal controlled channels. Situated at the top was the RF unit; the modulator was the middle drawer while the power supply was mounted in the bottom. Weighing in at 285 pounds, its weight to power ratio was very disproportional when compared to today's modern gear but this was leading edge technology in its heyday. Aboard HAIDA, the TDQ/RCK transmitter/receiver combination was used to communicate with civilian aircraft and also to monitor the VHF distress frequency of 121.5 mHz

Weighing in at 117 pounds, the RCK was a low radiation, AM VHF receiver built by the E.H. Scott Radio Laboratories during the 1940's. The RCK operated in the 110 to 160 mHz band using four crystal controlled channels.