Navy ATA/ARA - Army SCR-274N - AN/ARC-5 Command Sets
Classic World War II Era Communications EquipmentPristine units, not already modified in some way, should be left as is. Most units available today have been modified from their original 1940s era design.
I haven't seen these radios in 40+ years. I thought they had been discarded years ago!
| Freq Mc | ARA-ATA * | SCR-274-N | AN/ARC-5 | |
| Navigation Receiver (Beacon Band) | 0.19 - 0.55 | CBY/CCT-46129 | BC-453 | R-23/ARC-5 |
| Navigation Receiver (Broadcast Band) | 0.52 - 1.5 | CBY/CCT-46145 | BC-946 | R-24/ARC-5 |
| Communication Receiver | 1.5 - 3.0 | CBY/CCT-46104 | R-25/ARC-5 | |
| Communication Receiver | 3.0 - 6.0 | CBY/CCT-46105 | BC-454 | R-26/ARC-5 |
| Communication Receiver | 6.0 - 9.1 | CBY/CCT-46106 | BC-455 | R-27/ARC-5 |
| Communication Transmitter | 0.50 - 0.80 | CBY/CCT-52302 | T-15/ARC-5 | |
| Communication Transmitter | 0.80 - 1.3 | CBY/CCT-52303 | T-16/ARC-5 | |
| Communication Transmitter | 1.3 - 2.1 | CBY/CCT-52304 | T-17/ARC-5 | |
| Communication Transmitter | 2.1 - 3.0 | CBY/CCT-52232 | T-18/ARC-5 | |
| Communication Transmitter | 3.0 - 4.0 | CBY/CCT-52208 | BC-696-A | T-19/ARC-5 |
| Communication Transmitter | 4.0 - 5.3 | CBY/CCT-52209 | BC-457-A | T-20/ARC-5 |
| Communication Transmitter | 5.3 - 7.0 | CBY/CCT-52210 | BC-458-A | T-21/ARC-5 |
| Communication Transmitter | 7.0 - 9.1 | CBY/CCT-52211 | BC-459-A | T-22/ARC-5 |
- CBY = Aircraft Radio Corporation
- CCT = Stromberg Carlson
| Command Set Roundup CQ Magazine, February 1954, pages 13-18, 60 (Corrected 10/2021) | |
| Receivers | Transmitters |
 [FT-277 Two Receiver Rack] BC-453-B (black) 190-550 Kc BC-453-B (unpainted) 190-550 Kc [Schematic] [Layout]  CBY-46104 (black) 1.5-3 Mc, - includes dynamotor CBY-21531 [Schematic] [Layout]  BC-455-B (unpainted) 6-9.1 Mc Restoration in progress. [Schematic] [Layout] 10 meter converter used in the early 60s Historical ReferencesConversion of SCR-274N ReceiversRadio News, June 1948, pages 49-51 and 162-165 Hi-Res [Schematics] [Converter] [Power Supply] QST, October 1949, pages 29-31 [Schematic] The Novice Q5'er CQ Magazine, January 1956, pages 14-18 (Schematic corrected 8/2021) Converting the Command Receiver Practical Wireless, November 1957, pages 605-608 and December 1957, pages 717 and 718 Converting Your First "Command" Receiver Popular Electronics, June 1963, pages 45-48 |
 CCT-52208 (black) 3-4 Mc, manufactured by Stromberg Carlson - modified, converted to DSB (see CQ Magazine, May 1957). [Schematic] [Layout]  BC-696-A (unpainted) 3-4 Mc, Repair in progress. Variable caps repaired. [Schematic] [Layout] [T53 Pinout]  T-21/ARC-5 (black) 5.3-7 Mc, mostly unmodified [Schematic] [Layout] Historical ReferencesModernizing the SCR-274/N TransmitterRadio & Television News, January 1953, pages 58, 59, 125, 126 Instant Sideband, CQ Magazine, May 1957, pages 54 and 55 (Corrected 10/2021) Not recommended due to problems with oscillator pulling with modulation (FM). Another Approach To DSB Conversion Of Command Transmitters CQ Magazine, February 1960, pages 50-52 (Schematic corrected 10/2021) |
