Chakophone 'Junior Three’ radio receiver, a three valve radio receiver, 1927. In strong signal areas where additional amplification was not required, one valve could be switched out of circuit.
This radio dates from the first year of the British Broadcasting Corporation under its new Royal Charter.
The set features a switch on the front to tune in to medium wave, and an XX setting to receive long wave stations. It requires external batteries for power and could be listened to with headphones or by attaching a loud speaker.