Challenge 4 Band 10 Transistor R23
Challenge, (Brand); Where?
- Country
- Ireland
- Manufacturer / Brand
- Challenge, (Brand); Where?
- Year
- 1965 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 347274
- Number of Transistors
- 10
- Semiconductors
- Main principle
- Superhet with RF-stage; ZF/IF 10700/470 kHz
- Wave bands
- Broadcast, Long Wave, Short Wave plus FM or UHF.
- Power type and voltage
- Dry Batteries
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
- Material
- Various materials
- from Radiomuseum.org
- Model: Challenge 4 Band 10 Transistor R23 - Challenge, Brand; Where?
- Shape
- Portable set > 8 inch (also usable without mains)
- Notes
-
Challenge 4 Band 10 Transistor
- LW 810-2000m
- MW 190-560m
- SW 30-75m
- FM 88-108mHz
Twin antennas
- Author
- Model page created by Clive Forder. See "Data change" for further contributors.
- Other Models
-
Here you find 4 models, 4 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Challenge, (Brand); Where?