Inhaltsverzeichnis
AN/GRC-26 radio teletype system
Produced by various U.S. manufacturers.
The high-performance AN/GRC-26 radio teletype station was used by the U.S. Army in different configurations and was also used by the German Armed Forces after 1956. In addition to a transmitter, the station equipment included two receivers and two teleprinters with the necessary accessories, which were usually housed in a shelter on a lorry.
The predecessor station in the Second World War was the SCR-299 / SCR-399 radio station, which was introduced in Switzerland as SM 46 or SE-402.
Technical data
- Principle: Radio station with separate receivers and transmitters
- Frequency range: SW (2 - 18 MHz)
- Frequency display: Analogue dial
- Frequency memory: none
Power supply
- Mains operation]]: 115 V, from mains or generator PE-95
Dimensions
- mm, weight kg
Accessories
- HS-30 headphones or LS-3 loudspeaker
- Hand-held microphone T-17 or dynamic microphone T-50
- Knee morse key J-45
Station material
The equipment of the shortwave teletype station is housed in a shelter on a offroad truck; the original sets were replaced in various stages.
AN/GRC-26 (1950)
- Transmitter BC-610 (-F or -G) or T-213; 2 - 18 MHz, 400 watts
- Frequency converter O-39/TRA-7; 2 - 6 MHz (frequency shift exciter)
- BC-614 modulation amplifier
- Antenna tuning unit BC-939-A
- Two receivers BC-342 or R-336
- Diversity adaptor CV-31B/TRA-7
- Two teleprinters TT-55, one teleprinter TT-56 with tape punch
- C-292 teleprinter connection device
- Whip antenna 4.5 m or dipole antenna
- Frequency meter BC-221
AN/GRC-26A / B / C (1956)
- Transmitter BC-610 (-H or -I); 2 - 18 MHz, 400 Watt
- Frequency converter O-39B/TRA-7; 2 - 6 MHz (frequency shift exciter, transmitter side)
- BC-614 modulation amplifier
- Antenna tuning unit BC-939-B
- frequency converter CV-182 (440 - 510 kHz) (FSK converter, receiver side)
- one teleprinter TT-4A
- C-808 teleprinter connection set
- Whip antenna 4.5 m or dipole antenna
- BC-221 frequency meter
The A version of the AN/GRC-26 radio teletype station was supplied to the early Bundeswehr in 1956; the SCR-506 and AN/GRC-9 sets were often used to communicate with.
AN/GRC-26D (1956)
- Transmitter T-368; 1.5 - 20 MHz, 400 - 450 Watt
- MD-239 frequency converter (frequency shift exciter, transmitter side)
- Antenna matching device BC-939-B
- frequency converter CV-116B (frequency shift converter, receiver side)
- Two TT-98 teleprinters, one TT-76 teleprinter with hole punch
- Whip antenna 4.5 m or dipole antenna
In the D version, the AN/GRC-26 radio teletype station with the modernised T-368 transmitter and two R-390A receivers was introduced around 1962.
Technical principle
Radio teletype station with one transmitter, two receivers, one FSK modulator and one FSK modem, two teletypewriters and one teletypewriter / tape punch.
Components
The station is fully equipped with tubes.