| 释义 |
- Use
- Components
- Variants
- See also
- References
- External links
{{Infobox weapon
|name=SCR-108 Radio Truck
| image= Signal Corps Radio Truck 1920.jpg
| image_size = 300
|caption=
|origin= United States
|type= Radio truck
|service= 1920-?
|used_by=US Army
|wars=World War I ?
|designer=
|design_date= 1919
|manufacturer=White Motor Company
|unit_cost=
|production_date=
|number=
|variants=1
|is_vehicle=yes
|length= 120 inches
|width= 64 inches
|height=64 inches
|weight=1 1/2 ton
|suspension=
|speed=
|vehicle_range=
|primary_armament=none
|armour=none
|engine=
|engine_power=
|pw_ratio=
|crew=4
}}The SCR-108 Radio Truck was a mobile Signal Corps Radio used by the United States Army during and after World War I for short range air-to-ground communications, UseThis 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. Components(Note- all sets seem to have been upgraded to an A model) - SCR-54 Receiver- (BC-14), Crystal detector; inductively coupled; tuned primary and secondary; 150 foot inverted L antenna; wavelength range, 200 to 600 meters.
- 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.
- 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
- SCR-121 Amplifier- (BC-44), 2 stage vacuum tube audio amplifier using iron core transformers
VariantsThe SCR-124 was evedently housed in a similar truck, and was assigned to division and Corps level headquarters. it carried the following components- - SCR-99 Radiotelegraph
- SCR-121
- SCR-54
- SCR-82 battery charger (replaced by SCR-110)
- SCR-79.
- SCR-97 Radiotelephone
See also{{Portal|United States Air Force|World War I}}- Radio Tractor
- Signal Corps Radio
- SCR-197
- Crystal radio
References- Signal Corps Storage Catalog [https://books.google.com/books?id=WgKAfBPtDL8C&pg=PA33&lpg=PA33&dq=scr+54+radio&source=bl&ots=6o-rr48n0_&sig=VZOWdlnvwzrHHrrzOpo2lDAwB-0&hl=en&sa=X&ei=WkAAUe_oFdCtqAHnsYCoCw&ved=0CEgQ6AEwBA#v=onepage&q=scr%2054%20radio&f=false]
- Radio Communication Pamphlet No. 3 (SCR-54) [https://books.google.com/books?id=LSxJAQAAIAAJ&pg=RA1-PA29&lpg=RA1-PA29&dq=scr+54+radio&source=bl&ots=3GUiFgqI5X&sig=ozbzjqcBHrrdDmp2cAEaZwYxBh0&hl=en&sa=X&ei=WkAAUe_oFdCtqAHnsYCoCw&ved=0CEsQ6AEwBQ#v=onepage&q=scr%2054%20radio&f=false]
- Radio Communications Pamphlet No. 17 (SCR-79)[https://books.google.com/books?id=LSxJAQAAIAAJ&pg=RA1-PA29&lpg=RA1-PA29&dq=scr+54+radio&source=bl&ots=3GUiFgqI5X&sig=ozbzjqcBHrrdDmp2cAEaZwYxBh0&hl=en&sa=X&ei=WkAAUe_oFdCtqAHnsYCoCw&ved=0CEsQ6AEwBQ#v=onepage&q=scr%2054%20radio&f=false]
- Radio Communications Pamphlet No. 22 (SCR-67)
External links- https://web.archive.org/web/20100413132056/http://www.gordon.army.mil/ocos/museum/equipment.asp scr and bc lists
- Annual report [https://books.google.com/books?id=VBE_AAAAYAAJ&pg=PA259&lpg=PA259&dq=scr-108+radio&source=bl&ots=3VxcTnMFeB&sig=YDgd3WR-H5OewjY5xuP_LurF16E&hl=en&sa=X&ei=13EAUbK6EIixqQGtyIDQAQ&sqi=2&ved=0CEUQ6AEwAw#v=onepage&q=scr-108%20radio&f=false]
- 1922 Congressional hearing [https://books.google.com/books?id=IA49AAAAYAAJ&pg=PA210&lpg=PA210&dq=scr-124+truck&source=bl&ots=gIpASOKhbC&sig=8Cni1T0P6XXLRdxmLnVxJSyMaak&hl=en&sa=X&ei=Gb0CUbuiIcOayQHn6oHYDw&ved=0CDUQ6AEwAg#v=onepage&q=scr-124%20truck&f=false]
4 : Amateur radio transmitters|Military radio systems of the United States|World War I American electronics|Military electronics of the United States |