Ultra Twin R825
Ultra Electric Ltd.; London
- Country
- Great Britain (UK)
- Manufacturer / Brand
- Ultra Electric Ltd.; London
- Year
- 1957
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 127113
-
- alternative name: Ultra Radio and Television
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 4
- Main principle
- Superheterodyne (common); ZF/IF 471 kHz; 2 AF stage(s)
- Tuned circuits
- 6 AM circuit(s)
- Wave bands
- Broadcast (MW) and Long Wave.
- Power type and voltage
- Line / Batteries (any type) / 200-214; 215-234; 235-250 / 7.5 & 85 V Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
- Material
- Bakelite or Plastics (type unknown)
- from Radiomuseum.org
- Model: Ultra Twin R825 - Ultra Electric Ltd.; London
- Shape
- Portable set > 8 inch (also usable without mains)
- Dimensions (WHD)
- 12 x 8.5 x 6.5 inch / 305 x 216 x 165 mm
- Notes
- AC/DC mains or battery. Westalite selenium rectifier.
- Source of data
- -- Schematic
- Literature/Schematics (1)
- Paul Stennings Vintage Radio Service Data Vol 4
- Author
- Model page created by Keith Staines. See "Data change" for further contributors.
- Other Models
-
Here you find 235 models, 153 with images and 149 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Ultra Electric Ltd.; London
Collections
The model Ultra Twin is part of the collections of the following members.