The VHF62 was introduced shortly after the BBC began its VHF/FM service in 1955. FM offered listeners better sound quality and less interference than traditional AM reception.
A magic eye tuning indicator was one of its distinctive features. It’s an EM81 valve, visible through a small window in the upper-right section of the speaker grille. Its green illuminated display changes as you tune a station, helping you obtain a good signal.
The radio uses the following eight valves:
- ECC85 – VHF tuner
- ECH81 – AM frequency changer
- 2 × EF89 – intermediate-frequency amplification
- EABC80 – detection and audio preamplification
- EL84 – audio output
- EZ80 – mains rectifier
- EM81 – tuning indicator
SERVICE MANUAL PREVIEW
The original Bush service manual for the VHF61, with the Bush supplement for the VHF62, is available to members. Bush says the two radios are electrically identical. Here's a taste of what's inside.
These pictures are faded on purpose, just for this preview. Members get the complete manual, unfaded, to view and download.
The manual includes:
- The full circuit diagram
- Step by step AM and VHF alignment
- Component layout of the VHF box, and how to remove it
- How to dismantle the set and replace both cord drives
- Coil and transformer details, and valve voltages and currents
- Connections to the piano key switch unit
- Resistor, capacitor and part number lists
- Photos of the top and underneath of the chassis
