This simple set is housed in a polished mahogany
case with lift up lid and ebonite control panel.
It bears the 'BBC' stamp and P.O. Reg. No. 102.
Connection points for the aerial, earth and headphones
are provided, and the controls comprise a tuning knob
and a lever to adjust the detector.
Tuning uses a variometer. Turning the knob will change the resonant
frequency of the tuned circuit. A separate coil could be
used for the reception of long wave. Two people could
listen to the radio at the same time. Two antenna lengths (A
and B) can be used,
one coupled by a capacitor.
The set would have
cost £5 10s in 1923, of which 7s 6d (6.8%) was a royalty
paid to the BBC. Having no valves in the circuit gave a
considerable price advantage.
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