Pack; loop , telegraph set using a regenerative receiver and Hartley oscillator transmitter. Can be carried by two men.
Replaced by SCR-284
Used by Sig.C, INF, AF.

Principal Components:
Receiver 
Transmitter
Power unit:

Pack; loop telegraph set using a regenerative receiver and Hartley oscillator transmitter. Can be carried by two men.
Replaced by SCR-284
Used by IA.

Principal Components:
Receiver 
Transmitter
Power unit:

Ground, transportable; intended for command communication use between Division Headquarters and Brigade and Regiments. Transported by vehicle.
Replaced by SCR-284
Used by  Sig.C, INF, FA, AAF

Principal Components:
Receiver 
Transmitter
Power unit:

Ground transportable; used between tactical field units. It's transported in vehicles or cargo aircraft.

Ground, transportable; used between tactical field units. Carried in vehicle or cargo aircraft. Limited Standard.

Replaced by SCR-l77-B.

Used by Sig.C, CAC, TD.

Principal Components:
Receiver BC-189
Transmitter BC 191
Antenne Tuning Unit BC-306
Tuning Unit TU-3, TU-5, TU-6

Ground transportable; used between tactical field units and as a ground set in ground-to-plane communication. It's transported in vehicles or cargo aircraft.

Ground, transportable; used between tactical field units and as ground set  in ground-to-plane communication. Two receivers. Transported by vehicle or cargo aircraft.

Used by Sig.C, AAF, CAC, TD.

Principal Components:
Receiver BC-312 & BC-314
Transmitter BC 191
Antenne Tuning Unit BC-306
Power unit: PE-49

Radio set SCR 178 is a ground transportable radio set, intended for point-to-point ad ground-to-plane communication between artillery units and aircraft observation purposes.
Replaced by SCR 608, 609, 610 and 628.
Used  by Sig.C, AAF, FIA.

Principal Components:
Receiver BC 186
Transmitter BC 187
Modulator BC 188
Hand generator GN 37

Pack; same as SCR-178 except carrying cases have pack saddle hangers for transportation by animal.
replaced by SCR-608, SCR-609 and SCR-628
Used by FA.

Principal Components:
Receiver BC 186
Transmitter BC 187
Modulator BC 188
Hand generator GN 37

Ground, transportable; used for ground-to-ground or ground-to-air communication. Transported by vehicle or cargo plane . Limited Standard
Replaced by SCR-188-A.
Used by Sig.C,

Principal Components:
Receiver BC 342
Transmitter BC 191
Rectifier RA-34
Remote control RC-47

Ground, transportable; used for ground-to-ground, or ground to-air communication. Intended for semi-fixed use inside of buildings where commercial AC power is available, can be operated in an emergency from the gasoline engine driven generator supplied. Control Unit RM-12 and Control Unit RM-13 are components of Remote Control Equipment RC-47. All components of RC-47 are supplied with  this radio set. Can be remotely controlled over 5 Mi. of Wire W-101-B. Transported by vehicle or cargo plane. 
Used by Sig.C, AAF.

Principal Components:
Receiver BC 342
Transmitter BC 191
Rectifier RA-34
Remote control RC-47

Radio set SCR 193 is a vehicular set designed for two-way communication between moving or stationary vehicles, using cw, tone and voice signals over distances ranging from approximately 15 to 30 miles moving, and approximately 20 to 60 miles stationary, depending upon type of signal used
The various models of the set are adapted for installation and operation in different types of vehicles, including scout cars, combat cars, command trucks, etc.
Used by Sig.C, AF, CAV, ENG.

Principal Components:
Receiver BC 312
Transmitter BC 191
Dynamotor BD-77
Transmitter tuning unit TU-5, TU-6 & TU-7

Pack; walkie-talkie, provides communication over relatively short distances. Two tube transceiver consisting of modulated oscillator/super regenerative detector and modulator/audio amplifier. Used for training purposes and special projects. Limited  Standard. Replaced by SCR-609 and SCR-610.
Used by Sig.C, AF, ENG, FA.

Principal Components:
Receiver 
Transmitter 
Dynamotor 
Transmitter tuning unit 

Pack and vehicular; two tube transceiver consisting of modulated oscillator/super regenerative detector and modulator/audio amplifier. Used for training purposes and special projects. Replaced by SCR-609 and SCB-610
Used by Sig.C, INF.

Principal Components:
Receiver 
Transmitter 
Dynamotor 
Transmitter tuning unit 

Ground, mobile; high power radio station. For use at an Air Force base or with large field units. Transmitter Installed  In Truck K-18. 3 receivers,  plus monitor, installed in Trailer K-19 . Switch selection of master oscillator or any one of five crystal frequencies. Provision for installation of telephone switchboard, teletype and typewriters in trailer K-19. Transmitter can be remotely controlled using voice, tone or CW operation up to a distance of  7-1/2 Mi. of Wire W-110-B. Limited Standard.
Replaced by SCR-399.
Used by Sig.C, AAF, AY, INF.

Principal Components:
Receiver 
Transmitter 
Dynamotor 
Transmitter tuning unit 

Pack; low power short range highly portable command set designed to clamp on a Phillips Pack Saddle for animal-pack transportation and operation. Limited standard.
Replaced by SCR-245.
Used by Slg.C, CAV, FA.

Principal Components:
Receiver 
Transmitter 
Dynamotor 
Transmitter tuning unit 

Vehicular; for use in combat and scout cars equipped with a 12 volt, 180 ampere-hour storage battery and a 50-ampere generator. Limited Standard.
Replaced by SCR-508 and SCR-528.
Used by AF.

Principal Components:
Receiver 
Transmitter 
Dynamotor 
Transmitter tuning unit 

Vehicular; receiver only; for use In Signal Corps school and Armoured Force replacement training center or for installation in any vehicle requiring a separate receiver. Limited Standard.
Replaced by SCR-538.
Used by Sig.C, AF.

Principal Components:
Receiver 
Transmitter 
Dynamotor 
Transmitter tuning unit 

Radio set SCR 244 consists of a superhetrodyne receiver and a external power supply unit. The receiver uses a conventional circuit and is designed for the reception of c-w, a-m, or tone signals with either manual or automatic control.
Primarily intended for fixed-station use, although mountings for vehicular installation may be utilized.

Principal Components:
Receiver BC-1004
Cabinet CH-104
Power supply RA-84 or RA-94

Vehicular; for providing communication between stationary or moving vehicles equipped with a 12-volt, 180 ampere-hour storage battery with a 50-ampere generator. Tuning unit TU-25-A, covering frequency range 3.5 to 5.25 Mc, issued only to Cavalry. Switch selection of master oscillator or any one of four crystal frequencies. 
Replaced In Armoured Force by SCB-508 or SCR-528.
Used by Sig.C, AF, CAV, FA, INF.

Principal Components:
Receiver 
Transmitter 
Dynamotor 
Transmitter tuning unit 

Radio set SCR 281 consists of an a-m radiotelephone transmitter and receiver designed for operation on coastal and harbor vessels or in land stations for communication with such vessels.
This set cannot be used for radiotelegraph transmission or reception.

Principal Components:
Transmitter/Receiver BC-441

Radio set SCR 284 is a command set to be used either in a vehicle or on the ground for communication principally between Rifle Regiment and its Battalion in the various phases of combat. For pack operation, carried as a three man load. When used as a ground, transportable set it may be desirable to supply a 6Volt storage battery for operation of power converter PE-104 rather than to operate hand generator receiving.
The installation is replaced by SCR-694.
Used by, Sig.C. CAC, FA, INF.

Principal Components:
Transmitter/Receiver BC 654
Remote control RM-29
Power converter PE-104

Special thanks to Paul Thekan for the lid.
(sorry, not yet on the photo)

Pack and ground, transportable; carried in a vehicle or as a two man load. Temporary replacement for SCR-l3l, SCR-161 and  SCR-171. Limited Standard.
Replaced by SCB-284.
Used by Sig.C, FA, INF.

Principal Components:
Transmitter/Receiver

Radio set SCR 293 is a short range vehicular set designed to provide two-way fm voice communication between mobile units. This set was developed particularly for use in light tanks and scout cars.
Radio receiver BC-499 used with this set is an 11 tube, crystal controlled, 5 channel, fm, superheterodyne receiver, and is designed for the reception of fm signals of the type generated by Receiver and Transmitter BC-500.
This set has been replaced by Radio sets SCR-508 and SCR-528
Used by AF.

Principal Components:
Transmitter/Receiver BC 500
Receiver BC 499
Mounting FT-239
Antenna AN-42

Vehicular; receiver only of SCR-293. Installed in tank and scout cars. The preset channels are limited to adjacent 100kc. channels which may be selected by a switch inside of the receiver. Limited standard.
Replaced by SCR-538.
Used by Sig.C, AI.

Principal Components:

Receiver BC 499
Mounting FT-239
Antenna AN-42

Radio set SCR 293 is a fm, 25 watt set designed for installation and operation in a vehicle, and provides 2-way voice communication.
Vehicular; commercial police car set designed for two-way communication. Used by umpire personnel. Substitute standard. 
Used by FA.

Principal Components:
Transmitter Link 35-UFM
Receiver Link 11-UF
Power unit

Ground , mobile ; high power radio station for providing communication either from a stationary position or while moving at relatively high speeds over rough roads. May be remotely controlled up to a distance of one mile using the two telephones EE-8 end Wire W-110-B supplied. The remote control equipment provides for remotely keying or voice modulating the transmitter, remotely listening to Receivers BC-312 and BC-342 and communicating with the operator in the radio station who assists in the foregoing operation. A noiseless portable typewriter is included. A half-wave doublet antenna kit has been made available for improving sky wave transmission, thus increasing the range and reliability of operation of the radio set when at a fixed location. (Transmitter of SCR-299-F covers frequency range of 2.0-12.0 Mc.) Frequency conversion kite are available to extend the transmitter frequency range. Freq. Conversion Kit MC-509 gives coverage down to 1 Mc. Freq. Conversion Kit MC-516 given coverage to 12 Mc. Freq. Conversion Kit MC-517 give coverage to 18 Mc. Limited Standard
Replaced by SCR-399 and SCR-499.
Used by Sig.C, AAF, CAV, FA, INF.

Principal Components:
Transmitter 
Receiver 
Power unit

Radio set SCR 300 consists of an 18-tube, low power, dry battery operated portable radio receiver and transmitter. It is designed for fm, two way communication over short distances. It is primarily intended as a walkie-talkie for foot combat troops. The complete station weight is almost 40 pounds.

Pack; designed primarily for “back-pack” or “on-ground” operation, providing two-way communication over short ranges . The short whip antenna gives less distances range than the half-wave whip. Ground plane Antenna Equipment RC-291 is available for use with this set for increasing the distance range obtained by virtue of the increase in antenna height.
Used by CAC, , INF

Principal Components:
Transmitter/Receiver BC-1000
Antenna AN-130 & AN 131

Ground, mobile; high power radio station for providing communication either from a stationery position or while moving at relatively high speeds over rough roads. Installed in Shelter HO-l7 combined with power plant normally carried in cargo trailer K-52. Shelter HO-17 may be mounted on a 2-1/2 ton 6 x 6 cargo truck (not a component) for vehicular operation, or on level ground for fixed operation. May be remotely controlled up to a distance of one mile using the two Telephones EE-8 and Wire W-110-B supplied. The remote control equipment provides for remotely keying or voice modulating the transmitter , remotely listening to Receivers BC-312 and BC-342 and communicating with the operator in the radio station who assists in the foregoing operations. A noiseless portable typewriter is included. A half-wave doublet antenna kit is included for improving sky wave transmission, thus increasing the range and reliability of operation when at a fixed location. Frequency conversion kit MG-509 is available to extend the transmitter frequency range down to 1.0 Mc.

Used by Sig.C, AAF, AF, CAV, FA, IBF.

Principal Components:
Receiver BC 312
Receiver BC 342
Transmitter BC 610
Antenna tuning unit BC 939
Speech amplifier BC 614

Air transportable; high power radio station similar to SCR-399, except no shelter or trailer provided and components are packed for transportation by air. May be remotely controlled up to a distance of one mile using the two Telephones EE-8- and Wire W-110-B supplied. The remote control equipment provides for remotely keying or voice modulating the transmitter, remotely listening to receivers BC-312 and BC-342 and communicating with the operator in the radio station who assists in the foregoing operations. A noiseless portable typewriter is included. A half-wave doublet antenna kit is included for improving sky wave transmission, thus increasing the range and reliability of operation of this radio set. When installed in a 1/4 ton, 4x4 truck Antenna Equipment RC-293 (end fed 3/4 wave) is supplied, which together with counterpoise CP-15, is used instead of doublet kit . Frequency conversion Kit MC-509 is available to extend the transmitter frequency range down to 1.0 Mc.
Used by Sig.C, AAF, AF,CAV, FA, INF.

Principal Components:
Receiver BC 312
Receiver BC 342
Transmitter BC 610
Antenna tuning unit BC 939
Speech amplifier BC 614

Vehicular; command radio set, designed for installation in tanks, amphibian cars, personnel carriers and cars to provide communication between these vehicle and airplanes or base stations.
Used by Sig.C, AF, CAV, ENG, FA, TD.

Principal Components:
Receiver BC 653
Transmitter BC 652

Radio set SCR 508 is designed for installation and operation in combat vehicles such as tanks, scout cars, half-tracks, command cars, or any other authorized vehicle. This set consists basically of Radio transmitter BC-604 and two Radio Receivers BC-603. Radio transmitter BC-604 operates on 10 preset frequencies. Interphone control box BC-606 provides separate control and connection facilities for a microphone and a headset. Several control boxes may be connected in multiple, if desired. Radio set SCR 508 is very similar to Radio set SCR 528, main difference is that Radio set SCR 508 consists two receivers BC-603.
Used by AF.

Principal Components:
Receiver BC 603
Transmitter BC 604
Control Box BC 606

Radio set SCR 509 is a low power, dry battery operated, fm pack designed for two way voice communication over short ranges.
Use: Portable pack set for armoured units, Field Artillery, and infantery.

Principal Components:
Transmitter/Receiver BC 620
Battery Case CS-79
Antenna AN-45

Pack and vehicular; low power. Same as SCR-509 with additional components for use with 6-volt or 12-volt vehicular storage battery and equipped with shock mounts for mounting in a vehicle.

Used by AF, FA.

Principal Components:
Transmitter/ Receiver BC 620
Power unit PE-120

Packed and vehicular; for operation from dry battery or storage battery. Installed In vehicle or carried as guidon by man on horseback or (using dry battery) as one man load. When used with PE-157, the self-contained 2-volt storage battery can be recharged from a 6-volt or 12-rot storage battery. Spare tuning unit carried in chest unit and is readily available for a quick frequency change.
Used by Sig.C, CAV, ENG, INF.

Principal Components:
Transmitter/ Receiver 
Power unit 

Radio set SCR 528 is designed for installation and operation in combat vehicles such as tanks, scout cars, half-tracks, command cars, or any other authorized vehicle. This set consists basically of Radio transmitter BC-604 and Radio Receiver BC-603. Radio transmitter BC-604 operates on 10 preset frequencies. Interphone control box BC-606 provides separate control and connection facilities for a microphone and a headset. Several control boxes may be connected in multiple, if desired.
Radio set SCR 528 is very similar to Radio set SCR 508, main difference is that Radio set SCR 508 consists two receivers BC-603.
Used by AF.

Principal Components:
Receiver BC 603
Transmitter BC 604
Control Box BC 606

Pack; very short range "Handle-Talkie'. Lightweight, self-contained two-way voice audio set for parachute troops.
Used by INF.

Principal Components:
Receiver 
Transmitter 

Vehicular; receiver only of SCR-528 plus a separate interphone amplifier. Installed in tank and armoured car. Interphone amplifier provides communication for personnel in installation where noise level is high.
Used by AF.

Principal Components:
Receiver 
Transmitter 

Radio set SCR 543 is a medium range command set for use in vehicle or as a field station. It is equipped with its own gasoline driven source of power. The receiver may be operated from a storage battery when the gasoline-driven generator is not operating. The transmitter and power unit may be controlled from a distance of 18 feet with Remote Control Unit RM-21
Use: fixed or vehicular radiotelephone communication.

Principal Components:
Receiver/Transmitter BC 699
Power supply PE 110
Remote control RM 21

Radio set SCR 593 is a self contained, push button controlled radio receiver, designed for portable or vehicular operation.
Use: reception of alert or warning messages.

Principal Components:
Receiver BC-728
Antenna AN-75
Mounting FT-338

Radio set SCR 607 consists of radio receiver BC-787, which is a three band superhetrodyne receiver designed for mobile or fixed station use. The set is designed for interception and monitoring use, remote control may be used for stand-by reception.
Use: Intercept and monitoring.

Principal Components:
Receiver BC-787
Mounting FT-377
Antenna equipment RC-154

Radio set SCR 608 is designed to provide fm radio telephone facilities. It may be installed an operated in combat vehicles such as tanks, scout cars, half tracks, command cars, or any other authorized vehicles.
Use: Armoured combat vehicles and tactical ground units.

Principal Components:
Transmitter BC 684
Receiver BC 683 (2x)
Mounting FT-237

Radio set SCR 609 is a low power fm set which is designed to provide two-way communication over short distances from a stationary ground position. Power for the operation of the units is supplied by dry batteries.
Radio set SCR 609 may be converted to radio set SCR 610 by adding the components necessary for vehicular mounting and operation.
Use: Battery fire control from observation posts or liaison planes. Also general between vehicles.

Principal Components:
Transmitter/Receiver BC 659
Battery case: CS 79
Antenna: AN-29

Radio set SCR 609 is a low power fm set which is designed for installation and operation in vehicles and to provide two way communication over short distances.
Use: Battery fire control from observation posts or liaison planes. Also general between vehicles.

Principal Components:
Transmitter/ Receiver BC 659
Power Unit PE-120
Mounting FT 250
Antenna: AN-29

Radio set SCR 614 is a lf communication set used for intercept purposes. The principal components of this set are the radio receiver BC-969. Radio set SCR-614 may be operated on ground as a fixed station or installed and operated in vehicles.

Principal Components:
Receiver BC-969
Case CS-109
Mounting FT-411
Power supply unit RA-61
Mounting FT-414

Radio set SCR 616 is a superheterodyne receiver. Separate antenna inputs and rf sections for each band are incorporated in the receiver. The antenna consists of two biconical dipoles, one for each frequency band.
Use: Intercept and communication.

Principal Components:
Receiver BC-1269
Antenna equipment RC-281
Power supply unit RA-61

Radio set SCR 609 is a low power fm set. Although designed for field operation, the set may be operated from a 6, 12, or 24Volt vehicular supply system with modification in the use of components. The set may be operated by untrained personnel, may be quickly and easily changed to various types of operation, and is adaptable to emergency use is close combat areas.
Use: Battery fire control from observation posts or liaison planes. Also general between vehicles.

Principal Components:
Transmitter/ Receiver BC-1335
Mounting FT-506
Batteries:BB-54
Battery Charger PE-219

Air transportable; for ground-to-plane, or  ground-to-ground communication. Control Box  BC-ll75 is used for master control and channel selection at the set. Control Box BC-ll75 provides send-receive control and channel selection at a remote point up to 500 feet from the station. Control Box BC-1176 provides only send- receive control from remote point up to 2 mi. over telephone lines. The control boxes also provide connection for land-phone communication between any two of the three locations utilizing Telephone EE-8. similar to SCR-522 and SCR-542 airborne sets except for power source and additional equipment for ground use.
Used by AAF. 

Principal Components:
Transmitter/ Receiver
Mounting
Batteries
Battery Charger 

Radio set SCR 628 is designed to provide fm radiotelephone facilities. It may be installed and operated in combat vehicles such as tanks, scout cars, command cars, or any other authorized vehicles.
Use: Armoured combat and other vehicles.

Principal Components:
Transmitter BC-684
Receiver BC-683
Mounting FT-237

Radio set SCR 678 is an fm, general purpose, vehicular radio receiving set.
Use: General purpose fm reception and monitoring use. Used is signal installation and maintenance units.

Principal Components:
Receiver BC-683

Radio set SCR 694 is a light weight, low power, man-transportable, front line command set which provides two way radio telephone and telegraph communications. It can be used as a portable field set or installed and operated in vehicles. Radio set SCR-694 is particularly adapted to amphibious or jungle operation.
Replacement for SCR-284.
Used by Sig.C, CAC, FA , INF

Principal Components:
Transmitter/ Receiver BC-1306
Vibrator power supply PE-237
Generator GN-58
Antenna: AN-160

Pack; ground, transportable; and vehicular; provide communication for parachute troops. Switch selection of master oscillator or either of two crystal frequencies. Transported by vehicle or man pack. Limited production. 
Used by INF.

Principal Components:
Transmitter/ Receiver
Vibrator power supply 
Generator 
Antenna:

Radio set SCR 704 consists of a superheterodyne receiver and an external power supply unit. The receiver uses a conventional circuit and is designed for the reception of cw, am, or tone signals, with either manual or automatic control. Primarily intended for fixed station use, however vehicular installation may be made.
Use: 

Principal Components:
Receiver BC-794
Cabinet CH-104
Power unit RA-94

Radio set SCR 808 is an fm vehicular set intended for use in mobile Coast Artillery batteries and Military Police units. The set uses two Radio Receivers BC 923 and one Radio Transmitter BC 924, and is provided with four sets of tuning controls and four preset channels.
The transmitter has a low-power output, providing line of sight communication. A crystal calibrator is provided in the receiver for calibration of both the transmitter and receiver.

Principal Components:
Receiver BC-924 (2x)
Transmitter BC-923
Mounting FT-237

Radio set SCR 828 is an fm vehicular set intended for use in mobile Coast Artillery batteries and Military Police units. The set uses one Radio Receivers BC 923 and one Radio Transmitter BC 924, and is provided with four sets of tuning controls and four preset channels.
The transmitter has a low-power output, providing line of sight communication. A crystal calibrator is provided in the receiver for calibration of both the transmitter and receiver.

Principal Components:
Receiver BC 924
Transmitter BC 923
Mounting FT-237