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This set was developed in the post WWII period and was initially used by the CIA as the RS-1 (1950-1964). The GRC-109 was produced from approximately 1961 - 1969). Used from Special Forces units until the mid 1970s. An interesting accessory for this set is the GRA-71 which allowed Morse code burst transmissions to be made at speeds of about 300 WPM.
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| Freq. cov. |
Rx (MHz): 3-6, 6-12, 12-24 Tx (MHz): 3-5.5, 6-9, 10-16, 17-22 |
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| RF Power | 12-15 W | |||
| PWR Supply |
120/240 VAC 6 VDC accumulator Hand crank generator |
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| Weight |
Rx: 9 lbs Tx: 10 lbs PP-2684: 24 1/2 lbs |
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| Tubes Rx | 4x1T4, 1x1L6, 1x1U5 | |||
| Tubes Tx | 1x6AC7, 1x2E26 | |||