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Radio Teletype vehicle 56 Signal Squadron (2).jpg
AN/GRC-26A being used with UNEF

2-18 MHz
400 Watts
The AN/GRC-26 is a transportable assembly of equipment providing facilities for transmission and reception of radio teletype signals. It consists of a Shelter S-55/GRC, containing all the communication equipment which is normally transported by a 2-1/2 ton cargo truck. A power unit PE-95, installed in a 1 ton trailer, is towed by the cargo truck.[1]. There were various versions of the AN/GRC-26 denoted as AN/GRC-26A, AN/GRC-26B, AN/GRC-26C and AN/GRC-26D.

Communications is achieved on an frequency shift basis over a frequency range of 2 to 18 Mhz. Maximum power output is approximately 400 watts. Facilities are provided for operation of full duplex, half duplex or one way reversible circuits. CW and AM may be used alone or simultaneously with teletype operation. CW and voice can be used in motion or at a halt. For teletype communication it is recommended that the vehicle be brought to a halt. For mobile, one way reversible operation, three whip antennas are used; two for receiving and one for transmitting. Mobile at-the-halt operation normally utilizes whip antennas. If time permits, however, a doublet transmitting antenna should be erected to improve transmitted signal strength. For semi-fixed installations, doublet antennas are used for both transmitting and receiving with two receiving antennas for dual space diversity reception. The internal equipment consists of modified Joint Army/Navy receivers, transmitter, teletype equipment and radio teletype components. Components of the radio teletype equipment are in special, compact, shock mounted cabinets to allow them to be located in a limited amount of space. All operating components are located on tables and shelves in the shelter.

Canada used the AN/GRC-26A during its deployment with the United Nations Emergency Force (UNEF) which deployed to Egypt in 1956. During the deployment with United Nations Operation in the Congo (UNOC), Canada purchased 13 AN/GRC-26D stations.[2]

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Radio Nerds AN/GRC-26 page


  1. TM_11-264, December 1950
  2. Canada and Peace-keeping Operations, The Congo 1960-64. Report No. 8, Directorate of Heritage and History, Canadian Forces Headquarters. June 1966.