Used by US marines and paratroopers during WWII, designated Navy MAB.
Used by the IDF in the War of Independence (1948) at platoon level, with a range of ~1,500 meters.
Frequency range 2. 3 to 4.5 MHz, single crystal-controlled channel, AM (Amplitude Modulation), 0.2 watts output power.
Telescopic whip antenna (seven sections, 70” long), with a loading coil at antenna base.
Headsets assembled in canvas skull cap worn under standard metal helmet.
Transceiver carried in canvas backpack. Before jumping, it was carried packaged on paratrooper’s chest.
On/Off switch on microphone cable.
Power supply: Lead-Acid battery (6.4 Volts, 5 Amper-Hour) with vibrator power unit or dry battery 19027A (1.5, 67.5, 135 Volts and 6 Volts), allowing about ten hours operation.
Vacuum tube technology – seven miniature tubes.
Weight: 4 Kg.
