en:bc-344
Inhaltsverzeichnis
Radio Receiver BC-344
Produced for the U.S. Signal Corps by various manufacturers.
A VLF version of the BC-224 appeared with the BC-314, which covers the range from 150 - 1500 kHz in four bands; the BC-344 is a (U.S.) mains power variant of this receiver.
Technical data
- Frequency range: 150 - 1500 kHz
- Frequency memory: none
Power supply
- Mains: 110 - 120 V AC
Dimensions
- 460 x 254 x 231 mm, weight 27.9 kg
Accessories
Operation
Variants
| Type | Manufacturer | Voltage | Heated Oscillator | Noise Bal. System | Quartz - Filter | Comments |
|---|---|---|---|---|---|---|
| BC-314-_ | 12 - 14V DC | X | X | X | Dynamotor DM-21 (50 - 60W) | |
| BC-314-C | 12 - 14V DC | - | - | - | ||
| BC-314-D | 12 - 14V DC | - | - | - | ||
| BC-314-E | 12 - 14V DC | - | - | - | Antenna relay connects G1 of the first audio stage to ground for break-in operation | |
| BC-312-F | 12 - 14V DC | - | - | - | Antenna relay connects G1 of the first audio stage to ground for break-in operation | |
| BC-312-G | 12 - 14V DC | - | - | - | Antenna relay connects G1 of the first audio stage to ground for break-in operation |
| Type | Manufacturer | Voltage | Heated Oscillator | Noise Bal. System | Quartz - Filter | Comments |
|---|---|---|---|---|---|---|
| BC-344-_ | 110 - 120V AC | X | - | - | Rectifier RA-20 (75W) | |
| BC-344-D | 110 - 120V AC | - | - | - |
Technical principle
Components
The set is equipped with tubes: 6K7, 6K7, 6L7 (or 6L7G), 6C5, 6K7 or (6K7GT), 6K7 (or 6K7GT), 6C5, 6R7 (or 6R7GT), 6F6
Technical documentation
Development
In 1936, the Radio Corporation of America (RCA) developed the BC-224, an aircraft receiver that covered the shortwave range in six bands and was powered by an on-board voltage of 14V.
In 1939, the BC-314 was released as a set covering four VLF / medium wave bands, while the BC-344 was the mains voltage version.
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Further information
en/bc-344.txt · Zuletzt geändert: 2024/08/04 09:14 von mb