The Bush VHF81 is a British valve radio introduced in 1964, towards the end of the valve-radio era. It is a particularly attractive example of early-1960s domestic radio design, combining a wooden cabinet, traditional AM reception and the then-modern VHF/FM band.
The radio was manufactured by Bush Radio, then part of the Rank Organisation. It used the same chassis and circuitry as the earlier Bush VHF80 and VHF80C, but with an elegant wooden cabinet.
Valves
- UCC85 – VHF tuner and frequency conversion
- UF89 (two) – radio-frequency and intermediate-frequency amplification
- UCH81 – frequency conversion and IF amplification
- UABC80 – detection, FM demodulation and audio circuitry
- UL84 – audio output
- UY85 – mains rectifier
SERVICE MANUAL PREVIEW
The Trader service sheet for the Bush VHF81 is available to members. Here's a taste of what's inside.
These pictures are faded on purpose, just for this preview. Members get the complete service sheet, unfaded, to view and download.
The service sheet includes:
- The full circuit diagram
- Component values, with where to find each one on the chassis
- Valve voltages and currents
- Step by step AM and FM alignment
- How to replace the drive cords
- How to dismantle the set and remove the FM tuner
- Drawings of the chassis showing the component positions
