Receiver-Transmitter RT-67/GRC

MILITARY U.S. (different makers for same model)

  • Year
  • 1949
  • Category
  • Military Transceiver (TRX)
  • Radiomuseum.org ID
  • 176545

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 27
  • Main principle
  • Transceiver; ZF/IF 4450-4550 / 1400 kHz; 2 AF stage(s)
  • Tuned circuits
  • 10 FM circuit(s)
  • Wave bands
  • Short Wave (SW only)
  • Power type and voltage
  • Powered by external power supply or a main unit.
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Receiver-Transmitter RT-67/GRC - MILITARY U.S. different makers
  • Shape
  • Boatanchor (heavy military or commercial set >20 kg).
  • Dimensions (WHD)
  • 286 x 230 x 330 mm / 11.3 x 9.1 x 13 inch
  • Notes
  • RT-67/GRC is a robust FM radio-set, designed for vehicular use, applied in several communication set-ups: stand alone as VRC-9, or in larger systems GRC-5, GRC-6 and VRQ-2, powered by PSU PP-109/GRC with 12 volts battery or PP-112/GRC with 24 volts battery. It could also be used in the field with auxiliary-kit MX-898/GRC, including generator G-8/GRC and (not neccessary) a battery-box CY-590/GRC.
    Frequency range 27-39 MHz, transmitter output 2 watt low, or 16 watt high, FM(F3), voice and MCW.
    In the double conversion receiver part we find a RF stage, a first oscillator and first mixer to a band of 4450 to 5550 kHz.
    The left big tuning knob at the front serves a crystal-oscillator and a harmonics generator by switching to the desired MHz. There are 12 crystals to choose. The right big tuning knob serves a VFO to tune the desired signal within 1 MHz. After 2 variable IF stages, a second oscillator stage and second mixer stage bring the signal to a second IF of 1400 kHz, followed by 2 IF limiter stages, and a FM-discrimator with 2 valve-diodes 1A3.
    The transmitter frequency is controlled by a special discriminator that compares the transmitting-frequency to the receiver-frequency.
    The 2E24 transmitter-PA has a special quick-ready filament, and is only heated on transmit mode.

  • Net weight (2.2 lb = 1 kg)
  • 16 kg / 35 lb 3.9 oz (35.242 lb)
  • Source of data
  • -- Original-techn. papers.
  • Literature/Schematics (1)
  • TM11-289 1953 TDv 5820/006-13 1959
  • Author
  • Model page created by Jan Terranea. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Receiver-Transmitter is part of the collections of the following members.

 Forum