- Country
- United States of America (USA)
- Manufacturer / Brand
- Grebe, A.H. & Co.; Richmond Hill (NY)
- Year
- 1930
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 43475
-
- Brand: Synchrophase
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); 1 AF stage(s); Anode bend detection
- Tuned circuits
- 4 AM circuit(s)
- Power type and voltage
- Alternating Current supply (AC) / 110;120 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: 225M - Grebe, A.H. & Co.; Richmond
- Shape
- Console with any shape - in general
- Notes
- One dial (primary tuning control knob) Push-Pull amplifier directly following detector. Identical circuit scheme for AH1, 160, 18950, 225W, 225M
- Price in first year of sale
- 225.00 $
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Other Models
-
Here you find 188 models, 124 with images and 60 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Grebe, A.H. & Co.; Richmond Hill (NY)