1957 Four Tube British Superhet

1967DecRadioConstrThe portable tuned both the medium wave and long wave bands, and ran off a 90 volt B battery, with the filaments powered by a 1.5 volt A battery.  The set contained a built-in loop antenna, and the power switch was built into the case, with the set coming on when the lid was opened.

The set appeared in the December 1957 issue of the British Radio Constructor magazine.

1967DecRadioConstrSchematic