Listen to
"Two bluebirds" by the Orchestra of Stan
Greening, recorded on September 13, 1926
Valves
PM2, Cossor Stentor two power valve
and
PM1HF (first year of production of all valves 1926)
Left
The radio was made
using an number of components:
transformers by Ferranti and Radio
Instruments, a Dubilier grid-leak
resistor/capacitor, a capacitor made by
Edison Bell, London, an Ormond slow motion dual
indicator dial and tubes by Philips-Mullard and
Cossor. The antenna coil is home made.
Right
Flamed ebonite front
Lower left: on/off switch, lower right: rheostat.
In the middle: coarse tuning. Upper left: Fine tuning, upper
right: reaction control.
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