Inventory no. 87378 - Former Display Label
MARCONIPHONE 'REGENERATOR' UNIT
c.1924
Signed: "MARCONIPHONE TYPE R. B. I. B."
Plug-in ebonite box (113mm x 81mm x 21mm) for Type V2A Marconiphone receiver. Contains a helical coil and a flat coil with flat sliding copper disc moved by means of a nickel-plated lever. Unit for selectivity and volume for wavelengths 300-500 metres, and is used in conjunction with the shown spare aerial unit.