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Although a relatively large backpack-carried radio rather than a handheld model, the SCR-300 was described in War Department Technical Manual TM-11-242 as "primarily intended as a walkie-talkie for foot combat troops", and so the term "walkie-talkie" first came into use. [3] [4]
The power was supplied by a BA-37 1.5 volt dry battery for the filament supply and a 103.5 V BA-38 battery for plate supply. [4] Battery life was about one day of normal use. The SCR-536 weighed 5 pounds (2.3 kg) with batteries and 3.85 lb (1.75 kg) without batteries. The unit operated in AM voice mode between 3.5 and 6.0 MHz frequency range on ...
There is an optional handset H-33*/PT that can be connected to the AN/PRC-6 by a 5 ft (1.5 m) cable. The RT-196 can be carried over the shoulder using a provided web sling. Rated power output is about 250 mW. The range is about one mile (1.5 km), but much less in jungle. [8] [9]
AN/PRC 77 radio and handset American soldier using the KY-38 "man-pack", part of the NESTOR voice encryption system that was used during the Vietnam War. The upper unit is an AN/PRC-77 radio transceiver. The combined weight of the units, 54 pounds (24.5 kg), proved an obstacle to their use in combat.
Naval air traffic controller communicates with aircraft over a two-way radio headset A variety of portable handheld two-way radios for private use. A two-way radio is a radio transceiver (a radio that can both transmit and receive radio waves), which is used for bidirectional person-to-person voice communication with other users with similar radios, [1] in contrast to a broadcast receiver ...
It operated in the 33.8-38 MHz frequency range. 1.5 Watt output AM voice and CW. Range approximately 10 km with Cw and 3 km with voice. Used by the infantry. A common infantry set used for voice radio nets. Could be used on the move with one man carrying the transmitter/receiver and the other the battery/power supply and handset.
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