The Cossor 385 is a British valve radio introduced in 1937 by A. C. Cossor Ltd, one of Britain's important early radio manufacturers. It is a substantial, upright wooden table radio, typical of the better domestic receivers produced just before the Second World War. Today, it is of interest to collectors and restorers of pre-war wireless sets.
The Cossor 385 employs five valves:
- 41MPG – Frequency changer
- MVS/Pen – Intermediate-frequency amplifier
- DDT – Detector and audio amplification
- PT41 – Audio output
- 442BU – Mains rectifier
This arrangement was typical of a good-quality superheterodyne receiver of the period.
SERVICE MANUAL PREVIEW
The Trader service sheet for the Cossor 375 and 385 AC superhets is available to members. The two radios share the same chassis. 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
- Capacitor and resistor values
- Valve analysis, with the voltages and currents
- Step by step circuit alignment
- How to dismantle the set
- Notes on the switches, the scale lamps and the loudspeaker
- Photos of the top and underneath of the chassis
