- Country
- United States of America (USA)
- Manufacturer / Brand
- Allied Radio Corp. (Knight, Roamer, Wextark); Chicago (IL)
- Year
- 1929 ?
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 32413
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 8
- Main principle
- TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC) / 110 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- from Radiomuseum.org
- Model: Columbia SG-8 - Allied Radio Corp. Knight,
- Notes
- Push-pull af output stage
There are several versions found in the literature:
1) Manuf.: Allied ; Model Name: Knight SG-8 (1930) ; Reference: Rider's 3-4 & Radio Set Socket Layout Guide RCA, p.86
2) Manuf.: Allied ; Model Name: Columbia SG-8 ; Reference: Beitman 1-6 (schematic)
3) Manuf.: Allied ; Model Name: SG-8 ; Reference: Beitman 1-6 (complete index) & Rider's index
4) Manuf.: Allied ; Model Name: Knight 8 ; Reference: Grinder, Collectors Guide
5) Manuf.: Columbia Radio ; Model Name: Columbia SG-8 ; Reference: Beitman 1-6 (index)
6) Manuf.: Columbia Radio ; Model Name: SG-8 (1930) ; Reference: Rider's 1-2
7) Manuf.: Columbia Radio Corp. ; Model Name: AC-8-29 SG ; Reference: Radio Set Socket Layout Guide RCA, p.20
As far as present all models have the same schematic and tube complement
- External source of data
- Ernst Erb
- Circuit diagram reference
- Beitman Radio Diagrams Vol. 1, 1926-1938
- Other Models
-
Here you find 1035 models, 638 with images and 680 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Allied Radio Corp. (Knight, Roamer, Wextark); Chicago (IL)