Marconi Receiver Type AD8882B, by Marconi Company, London, c. 1939

Marconi Receiver Type D8882B (pre-development version of R1155), as designed and manufactured by the Marconi Company. Receiver Type AD8882B in black crinkle-finish steel case, with Bakelite? tuning dial and Perspex? half-moon multiscale display. Other dials and knobs include those for meter balance, filter, meter amplitude, het. adj., tuning indicator, meter deflection (LOW, HIGH), aural sense (L to R), switch speed, balance (0, AVC, BALANCE, VISUAL, INFINITY), het, volume and wavelength? (18/7.5, 7.5/3.0, 1500/600, 500/200, 200/75). Tuning dial is pre-1942 model: tests revealed this original dial was difficult to tune at high altitudes due to the operators' gloves. Receiver also includes plugs from transmitter and loop aerial, and to visual indicator. With steel handles on front vertical surface. Previously catalogued with Receiver Type R1155A (Inv. Num. 68465), Transmitter Type AD87B (Inv. Num. 79145).