The Yaesu FR-50 is one of the earlier HF receivers on the commercial market. Both the FR/FL-50 equipment were released together in 1966 by the Japanese Yaesu Musen Corp. In Europe these radios were marketed under the brand name Sommerkamp. The all-metal-cased receiver is only suitable for amateur (HAM) band reception in the AM, CW and SSB modes.
Technical description
The FR-50(B) is a double conversion super-heterodyne type in which the 1st local oscillator is not crystal controlled but controlled by a conventional LC VFO oscillator. Its oscillation frequency ranges from 8.5 MHz to 24.0 MHz depending on the used band. This type of construction makes the VFO output frequency very unstable. Two 4kHz mechanical filters are standard equipped for the internal two step IF amplifiers at 455 kHz. A 100kHz X’tal calibrator is incorporated.
| Main principle | Superhet, double/triple conversion; ZF/IF 5173,9/455 kHz; 2 AF stage(s) |
|---|---|
| Wave bands | Short Wave (SW only) |
| Details | |
| Power type and voltage | Alternating Current supply (AC) / 100; 110; 117; 200; 220; 235 Volt |
| Loudspeaker | Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 7 cm = 2.8 inch |
| Power out | 2.5 W (unknown quality) |
| from Radiomuseum.org | Model: FR-50B - Sommerkamp |
| Material | Metal case |
| Shape | Tablemodel, low profile (big size). |
| Dimensions (WHD) | 335 x 153 x 260 mm / 13.2 x 6 x 10.2 inch |
| Notes | Sommerkamp KW-Empfänger FR-50B. Empfängt das 80-, 40-, 20- und 15-Meter-Band in 600 kHz breiten Bereichen, 28-29,2 MHz in einem Bereich; Betriebsarten: AM, SSB, CW. Von Yaesu für Sommerkamp gefertigt. |
| Net weight (2.2 lb = 1 kg) | 7.2 kg / 15 lb 13.7 oz (15.859 lb) |
| Collectors' prices |
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