- Country
- United States of America (USA)
- Manufacturer / Brand
- Electrical Research Laboratories Inc. (Erla); Chicago, Illinois
- Year
- 1931
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 38077
By courtesy of William Kendrick, USA
By courtesy of William Kendrick, USA
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 7
- Main principle
- TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935
- Tuned circuits
- 4 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC)
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: 271 - Electrical Research
- Shape
- Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
- Notes
- 4-gang condenser.
- External source of data
- Ernst Erb
- Source of data
- Collector's Guide to Antique Radios 4. Edition
- Circuit diagram reference
- Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)
- Literature/Schematics (1)
- Rider's Perpetual, Volume 1 = 1931/1934 (1919 to 1931)
- Other Models
-
Here you find 134 models, 47 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Electrical Research Laboratories Inc. (Erla); Chicago, Illinois