- Country
- Great Britain (UK)
- Manufacturer / Brand
- Rogers, Catford (see also Rogers Birmingham)
- Year
- 1949 ?
- Category
- Audio Amplifier or -mixer
- Radiomuseum.org ID
- 356891
Wireless World Jun 1949, Page Ad 54
Wireless World Mar 1949, Page Ad 70.
- Number of Tubes
- 6
- Valves / Tubes
- Main principle
- Audio-Amplification
- Wave bands
- - without
- Power type and voltage
- Alternating Current supply (AC)
- Loudspeaker
- - This model requires external speaker(s).
- Power out
- 10 W (unknown quality)
- Material
- Metal case, TUBES VISIBLE
- from Radiomuseum.org
- Model: RD Junior - Rogers, Catford see also
- Shape
- Chassis only or for «building in»
- Notes
-
RD Junior Amplifier: A Classic Design
The Rogers RD Junior amplifier, introduced in 1949, was a simple yet effective integrated mono amplifier. Initially powered by PX4 output valves, it offered an output of 10 watts and was available in both kit form (£16.17s) and factory-built (£19.10s). Enthusiasts could also purchase a set of layout and circuit diagrams with a parts list for 7s. 6d.
As advertised in Wireless World in March 1949:
High-Fidelity Performance at Truly Low Cost
The RD Junior was designed to meet the needs of those seeking high performance at a reasonable price. Improved production methods, innovative circuitry, and the elimination of unnecessary components made this amplifier possible at a truly competitive price.
Key Features of the 1949 RD Junior:
- 6 valves plus rectifier
- 8-10 watts output (two PX4s in push-pull)
- Independent bass and treble tone controls
- High gain compensated phono input stage
- Frequency range: 30-15,000 cps, ±1 dB
- Provision for radio feeder unit
- Ample negative feedback applied over three stages, including the output transformer
- High-quality components throughout, including Partridge transformers and chokes
Note: The Wireless World advert from June 1949 shows a picture of this amplifier with tone controls, confirming that this 1949 version included them.
- Price in first year of sale
- 19.50 GB £
- Mentioned in
- Wireless World (The), London (WW, 79) (Mar 1949, Page Ad 70.)
- Literature/Schematics (1)
- Wireless World (The), London (WW, 79) (Jun 1949, Page Ad 54.)
- Author
- Model page created by Gary Cowans. See "Data change" for further contributors.
- Other Models
-
Here you find 39 models, 39 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Rogers, Catford (see also Rogers Birmingham)