- Country
- United States of America (USA)
- Manufacturer / Brand
- R.K. Radio Laboratories, Inc.
- Year
- 1934
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 52360
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 4
- Main principle
- TRF without regeneration; 2 AF stage(s)
- Tuned circuits
- 2 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC) / 117 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- from Radiomuseum.org
- Model: 428 - R.K. Radio Laboratories, Inc.
- Notes
-
BC (550 - 1750 kHz) band.
- Circuit diagram reference
- Rider's Perpetual, Volume 6 = 1935 and before
- Mentioned in
- Riders 6 RK 6-1
- Author
- Model page created by Peter Rutishauser. See "Data change" for further contributors.
- Other Models
-
Here you find 29 models, 15 with images and 22 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from R.K. Radio Laboratories, Inc.