Details
A H.W. Sullivan Amplifier type M3B,
using three plug-in valves, rotary tuning with bar selection, ebonite panel mounted on mahogany wall mounting box base; an Admiralty pattern 7492A Q7 receiver, with two NR15A valves, dated 1931; A Johnson & Phillips Ltd inductance mutual tuner No. 41, Patt. 2472, No. 2610, with slide-out coil to the side of tuning tap control and ebonite and mahogany body; a condenser bridge No. 14, Patt. 1797 by the Telegraph Condenser Co. Ltd., London; a smaller bridge, No. 13, Patt. 2278; a rosin filled vertical induction coil; and a small quantity of photographs, circuit diagrams and documents covering marine radio and early sets (qty)
using three plug-in valves, rotary tuning with bar selection, ebonite panel mounted on mahogany wall mounting box base; an Admiralty pattern 7492A Q7 receiver, with two NR15A valves, dated 1931; A Johnson & Phillips Ltd inductance mutual tuner No. 41, Patt. 2472, No. 2610, with slide-out coil to the side of tuning tap control and ebonite and mahogany body; a condenser bridge No. 14, Patt. 1797 by the Telegraph Condenser Co. Ltd., London; a smaller bridge, No. 13, Patt. 2278; a rosin filled vertical induction coil; and a small quantity of photographs, circuit diagrams and documents covering marine radio and early sets (qty)