|Year: 1973–1976||Category: Broadcast Receiver - or past WW2 Tuner|
|Semiconductors (the count is only for transistors)||14: BF255 or. BF121 or. BF125 AC117 AC122 BC108 BC262 AC175 AA112 ZF6,8 TAA611|
|Main principle||Wadley-Loop principle (including dual superhet); something special ? Please give information (notes)|
|Wave bands||Broadcast plus more than 2 Short Wave bands.|
|Power type and voltage||Storage and/or dry batteries / 9 Volt|
|Loudspeaker||Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 cm = 3.1 inch|
|Power out||0.4 W (unknown quality)|
|from Radiomuseum.org||Model: XCR-30 Mark 2 - Barlow-Wadley; South Africa|
|Shape||Portable set > 8 inch (usable also without mains)|
|Dimensions (WHD)||292 x 190 x 98 mm / 11.5 x 7.5 x 3.9 inch|
|Notes||Coverage: 500 kHz - 30 MHz in 31 ranges, AM/CW/SSB. Triple conversion, drift eleminating loop circuit, developed by former RACAL employee Dr. Trevor Wadley (first used in RACAL RA-17). Only two IF-filters. See also Barlow-Wadley XCR-30 FM Mark II.
Models up to June 1974 have total 18 transistors, the transistorized audio amplifier has been replaced with an IC TAA611 afterwards.
Each semiconductor type listed once only.
Some examples prior to June 1974 fitted with different RF transistors:
- BF125 in 4-pin epoxy pill-package
- BF198 & BF199 in 3-pin metal TO72 cans, made by STC.
It may be that the supply of semiconductors during this period was problematic due to the sanctions in place on South Africa.
|Net weight (2.2 lb = 1 kg)||4 kg / 8 lb 13 oz (8.811 lb)|
|Price in first year of sale||740.00 DM|
|Source of data||-- Original-techn. papers.|
Model page created by Wolfgang Jakob. See "Data change" for further contributors.
All listed radios etc. from Barlow-Wadley; South Africa
Here you find 5 models, 5 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.