• Country
• United States of America (USA)

• Manufacturer / Brand
• MILITARY U.S. (different makers for same model)

• Year
• 1975 ??

• Category
• Military Transceiver (TRX)

• Radiomuseum.org ID
• 218846

• Number of Tubes
• 4

• Valves / Tubes
• 6BZ6 6AN5WA 8233 8322

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Transceiver

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 27 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: GRC-106A HF Radio Set RT834, AM3349 - MILITARY U.S. different makers

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 2280 x 330 x 455 mm / 89.8 x 13 x 17.9 inch

• Notes
• This GR-106A HF Radio Set consists of Receiver/Transmitter RT834 and Power Amplifier AM3349, mainly for mobile purposes.
  
  RT-834/GRC PERFORMANCE DATA (also apply to RT-662/GRC)
  TYPE OF RECEIVER: Superheterodyne with triple conversion
  BANDWIDTH: 3.2 kHz
  FREQUENCY RANGE: 2.0 to 29.999 MHz
  TYPES OF TRANSMISSION: Upper-sideband, USB compatible AM, Continuous Wave, Frequency-shift-keyed, Narrow Frequency-shift-keyed.
  TYPES OF RECEPTION: USB signals, USB compatible and conventional double-sideband, AM, Continuous Wave, Frequency-shift-keyed, Narrow frequency-shift-keyed.
  PRIMARY VOLTAGE: 27 volts direct current
  POWER REQUIREMENTS
  OVEN ON: 16.2 watts to begin; 2.7 watts after warm up
  STAND BY: 14 watts average
  SSB NSK, FSK, AM and CW: 36 watts average to receive, 45 watts average to transmit
  RF POWER OUTPUT: 0.1 watt peak effective power.
  
  AM-3349/GRC-106 PERFORMANCE DATA
  FREQUENCY RANGE: 2.0 to 29.999 MHz
  INPUT IMPEDANCE: 50 ohms
  OUTPUT IMPEDANCE: Output No.1 50 ohms, Output No.2 to match 15 foot whip antenna
  PRIMARY VOLTAGE: 27 volts direct current
  POWER REQUIREMENTS (watts average)
  STAND BY: 250
  OPERATE: 250
  TRANSMIT TWO-TONE: 1,000
  TRANSMIT VOICE: 800
  POWER OUTPUT
  CW, COMPATIBLE AM(with two-tone signal), SSB VOICE, FSK OR NSK VOICE, NSK: about 200 watts
  ANTENNA: 15 foot whip or doublet (50 ohms)
  EFFECTIVE RANGE: 20 miles planning range (ground wave); 80 miles and farther (skywave); depending on terrain, frequency, antenna, time of day, and atmospheric conditions.

• Net weight (2.2 lb = 1 kg)
• 32.3 kg / 71 lb 2.3 oz (71.145 lb)

• Source of data
• -- Original-techn. papers.

• Author
• Model page created by Bart Slager. See "Data change" for further contributors.

• Other Models

• Here you find 393 models, 345 with images and 210 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.S. (different makers for same model)