Radio Receiver, R-274/FRR

JAN Type: R-274/FRR
Nomenclature: Radio Receiver
Reference: TM 11-897
NSN: 5820-00-187-3143
Weight: 66
Size: 10-15/32 x 18-1/8 x 19
Mode: 6A3, 2A2, 1.1F1, 0.1A1
Frequency Range: 0.54-54 MHz
Power Input: 90-260 (8 Steps) VAC 50-60 Hz @ 120 W
Number of Channels: Continuously Tunable
Description: Radio Receiver R-274/FRR is a MF, HF and VHF AM (voice, tone and CW) receiving equipment used for communication and special applications in fixed plant and similar installations. This equipment consists of a single radio receiver component having builtin power supply that is mounted on a panel for rack mounting. It requires additional equipment for reproduction of audio signals. Carrier shift signals can be fed to appropriate teletypewriter terminal equipment or to Dual Diversity Converter CV-31/TRA-7 and similar units. Provision is made for the use of the audio end of this radio receiver alone, and for standby operation when used in conjunction with radio transmitting equipment. It operates with a single wire antenna or any of the more complex fixed radio station antennas.
Source: TM 11-487A, 58
Created: Sun Jul 16 15:20:02 2000
Last Modified: Mon Oct 21 13:45:51 2002


Radio Receiver, R-274A/FRR

JAN Type: R-274A/FRR
Nomenclature: Radio Receiver
Reference: TM 11-851
NSN: 5820-00-187-3143
Weight: 66
Size: 12-3/4 x 19 x 21-3/8
Mode: 6A3, 2A2, 1.1F1, 0.1A1
Frequency Range: 0.54-54 MHz
Power Input: 90-270 (8 Steps) VAC 50-60 Hz @ 130 W
Number of Channels: Continuously Tunable
Part of: FRR-12X
Description: The R-274A is a general-purpose radio receiver. It uses a 455 kHz IF on all bands, and a 3955 kHz second IF on the high 3 bands. It has provisions for six crystal-controlled channels in the range 1.35-29.7 MHz. This is a hammarlund SP-600 receiver. This receiver is similar to R-320A and R-483A.
Source: TM 11-497A, 58
Manufacturer: Hammarlund
Tube Lineup: 7 ea 6BA6, 2 ea 6BE6, 3 ea 6C4, 0A2, 3 ea 6AL5, 12AU7, 6V6, 5R4GY, 6AC7
Created: Sun Jul 16 15:20:02 2000
Last Modified: Mon Oct 21 13:54:46 2002


Radio Receiver, R-274C/FRR

JAN Type: R-274C/FRR
Nomenclature: Radio Receiver
Reference: TM 11-851
NSN: 5820-00-187-3143
Weight: 66
Size: 12-3/4 x 19 x 21-3/8
Mode: 6A3, 2A2, 1.1F1, 0.1A1
Frequency Range: 0.54-54 MHz
Power Input: 90-270 (8 Steps) VAC 50-60 Hz @ 130 W
Number of Channels: Continuously Tunable
Part of: FRR-12X
Description: The R-274C is a general-purpose radio receiver. It uses a 455 kHz IF on all bands, and a 3955 kHz second IF on the high 3 bands. It has provisions for six crystal-controlled channels in the range 1.35-29.7 MHz. This is a hammarlund SP-600 receiver. This receiver is similar to R-320A and R-483A.
Source: TM 11-487A, 58
Manufacturer: Hammarlund
Tube Lineup: 7 ea 6BA6, 2 ea 6BE6, 3 ea 6C4, 0A2, 3 ea 6AL5, 12AU7, 6V6, 5R4GY, 6AC7
Created: Sun Jul 16 15:20:02 2000
Last Modified: Mon Oct 21 13:57:08 2002


Radio Receiver, R-274D/FRR

JAN Type: R-274D/FRR
Nomenclature: Radio Receiver
Reference: TM 11-851
NSN: 5820-00-503-1241
Weight: 58
Size: 12-3/4 x 19 x 20
Mode: 6A3, 2A2, 1.1F1, 0.1A1
Frequency Range: 0.54-54 MHz
Power Input: 90-270 VAC 50-60 Hz @ 130 W
Number of Channels: Continuously Tunable
Part of: GRC-38
Description: The R-274D is a general-purpose radio receiver. It uses a 455 kHz IF on all bands, and a 3955 kHz second IF on the high 3 bands. It has provisions for six crystal-controlled channels in the range 1.35-29.7 MHz. This is a hammarlund SP-600 receiver. This receiver is similar to R-320(*) and R-483(*).
Source: TM 11-281B
Manufacturer: Hammarlund
Tube Lineup: 7 ea 6BA6, 2 ea 6BE6, 3 ea 6C4, 0A2, 3 ea 6AL5, 12AU7, 6V6, 5R4GY, 6AC7
Contract:
Contract Year Manufacturer Quantity
------------------- ---- ----------------- --------
3464-P-52-06 1952 Hallicrafters Co. ???
Created: Sun Jul 16 15:20:02 2000
Last Modified: Wed Nov 14 18:54:25 2001



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