4 Tube AC/DC TRF
Avalon Radio Mfg.Co.; Los Angeles
- Country
- United States of America (USA)
- Manufacturer / Brand
- Avalon Radio Mfg.Co.; Los Angeles
- Year
- 1935 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 306128
From the collection of James Stellema
From the collection of James Stellema
From the collection of James Stellema
From the collection of James Stellema
- Number of Tubes
- 4
- Main principle
- TRF without regeneration; 1 AF stage(s)
- Tuned circuits
- 2 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Line / Storage batteries (perhaps also batteries) / 110/32 Volt
- Loudspeaker
- Magnetic loudspeaker (reed) generic.
- Material
- Wooden case
- from Radiomuseum.org
- Model: 4 Tube AC/DC TRF - Avalon Radio Mfg.Co.; Los
- Shape
- Tablemodel without push buttons, Mantel/Midget/Compact up to 14
- Notes
-
The market for this radio appears to have been farms with 32VDC power systems which were later to be ugraded to 110VAC power systems. The 6 contact socket on the back of the radio provided connection to operate the tube filaments from 32VDC and connect a B+ supply which might have been a 90 to 135 volt dry battery or the 32VDC. When 110VAC power became available, the 6 pin plug could be removed and the radio powered through an attached power cord. The 12Z3 rectifier then provided the B+ voltage and a resistive part of the cord reduced the AC voltage to 32 volts for the tube filaments
- Author
- Model page created by Jay Kinnard. See "Data change" for further contributors.
- Other Models
-
Here you find 5 models, 4 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Avalon Radio Mfg.Co.; Los Angeles
Collections
The model 4 Tube AC/DC TRF is part of the collections of the following members.