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| − | [[SCR-108]]
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| − | The '''SCR-108 Radio Truck''' was a mobile Signal Corps Radio used by the U.S. Army during and after World War I, for short range air to ground communications,
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| − | ==Use==
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| − | This truck was assigned to squadron headquarters in order to communicate with the [[SCR-68]] airplane radio as well as the others in its class. eventually replaced by the [[SCR-197]] mobile radio station. The van is described as having room for 3 operators and one squadron radio officer. One bench supports the SCR-67, SCR-54, and 1 amplifier with storage batteries held by clamps underneath the bench. on another bench is the SCR-79. a desk for the officer is installed with batteries underneath. a 6 volt circuit is provided for 2 lamps connected to storage batteries, and a 110 volt circuit with 2 lamps is provided if there is an external power source available.
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| − | ==Components==
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| − | (Note- all sets seem to have been upgraded to an A model)
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| − | * [[SCR-54]] Receiver- (BC-14), Crystal detector; inductively coupled; tuned primary and secondary; 150 foot inverted L antenna; wavelength range, 200 to 600 meters.
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| − | * [[SCR-67]] Radiotelegraph- (BC-13), transmitting and receiving; for ground stations; has 1 oscillator, 1 modulator, 1 detector, and 2 amplifier vacuum tubes; wavelength range transmitting 250 to 450 meters, and receiving 200 to 600 meters.
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| − | * [[SCR-79]] Radiotelegraph- (BC-25), transmitting and receiving; consists of an electrostatically coupled vacuum tube oscillator circuit for transmitting, and a vacuum tube detector and 2 stage amplifier for receiving; requires a low resistance antenna. wavelength is 500 to 1.100 meters
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| − | * [[SCR-121]] Amplifier- (BC-44), 2 stage vacuum tube audio amplifier using iron core transformers
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| − | ==Variants==
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| − | The SCR-124 was evedently housed in a similar truck, and was assigned to division and Corps level headquarters. it carried the following components-
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| − | * SCR-99 Radiotelegraph
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| − | * SCR-121
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| − | * SCR-54
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| − | * SCR-82 battery charger (replaced by SCR-110)
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| − | * SCR-79.
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| − | * SCR-97 Radiotelephone
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