- Country
- Switzerland
- Manufacturer / Brand
- Unknown - CUSTOM BUILT: Switzerland (CH)
- Year
- 1925 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 304261
- Number of Tubes
- 1
- Valves / Tubes
- Main principle
- TRF with regeneration
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Storage and/or dry batteries / 4 & 80 Volt
- Loudspeaker
- - For headphones or amp.
- Material
- Wooden case, TUBES VISIBLE.
- from Radiomuseum.org
- Model: Unknown - Unknown - CUSTOM BUILT:
- Shape
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 305 x 265 x 160 mm / 12 x 10.4 x 6.3 inch
- Notes
-
The aerial terminal of the set is identified on the top panel in French ("Antenne"). On the underside of the panel, the terminals "A" ("Antenne") and "T" ("Terre") are crossed over.
LT voltage is marked as -4v, HT voltage as +80v, relative to earth. The filament current of the valve is controlled by a 20 ohm rheostat.
The tuning (right) and reaction (left) controls have concentric drive shafts. The inner knob on the reaction control rotates a single vane for fine adjustment of the capacitance, while the corresponding shaft in the tuning control is not connected to anything.
- Net weight (2.2 lb = 1 kg)
- 2.530 kg / 5 lb 9.2 oz (5.573 lb)
- Author
- Model page created by Bruce Taylor. See "Data change" for further contributors.
- Other Models
-
Here you find 24 models, 19 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Unknown - CUSTOM BUILT: Switzerland (CH)
Collections
The model Unknown is part of the collections of the following members.