- United States of America (USA)
- Manufacturer / Brand
- Drake, R.L. Miamisburg, Ohio
- Amateur-Receiver (amateur bands, may include broadcast bands)
- Radiomuseum.org ID
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- Number of Transistors
- Main principle
- Superhet, double/triple conversion; ZF/IF 5645 kHz
- Wave bands
- Short Wave (SW only)
- Power type and voltage
- Alternating Current supply (AC) / 120/240 Volt
- - For headphones or amp.
- Power out
- 1.5 W (unknown quality)
- Metal case
- from Radiomuseum.org
- Model: R-4B - Drake, R.L. Miamisburg, Ohio
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 274 x 140 x 297 mm / 10.8 x 5.5 x 11.7 inch
Double conversion - first IF 5645KHz, second IF 50KHz. Can receive 1.5-5MHz+6-30MHz divided in six bands: 1.5-3MHz("1.5-3.0"), 3-5MHz("3.5"), 6-10MHz("7.0"), 10-16MHz("14.0"), 16-23MHz("21.0") and 23-30MHz("28.5"). The HAM-bands covered with the default five crystals are 80, 40, 20, 15 and part of 10 meter (28.5-29MHz). An additional 500 KHz range can be covered per additional crystal. The VFO covers 500KHz with one crystal, AM/CW/SSB, passband-tuning, IF-notch-filter. Optional synthesizer FS-4 for continuous coverage. 52 ohm antenna via RCA connector. Needs external speaker (RCA connector). Matches transmitter T-4XB. Via an INJ RCA connector cable, the T-4XB can use the R-4B frequency synthesizer, so the R-4B crystals (or FS-4) and VFO also controls the T-4XB. (The T-4XB band switch still needs to be changed manually.)
17 Diodes; 2 ICs.
- Net weight (2.2 lb = 1 kg)
- 7.3 kg / 16 lb 1.3 oz (16.079 lb)
- Price in first year of sale
- 400.00 $
- Source of data
- Shortwave Receivers - Past & Present (3rd ed.)
- Model page created by Martin Bösch. See "Data change" for further contributors.
- Other Models
Here you find 154 models, 97 with images and 59 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Drake, R.L. Miamisburg, Ohio