Radio transmitter from Ptarmigan communications system used by the British Army, made by Plessey Limited, England, 1985-2010 Radio transmitter from Ptarmigan communications system, 1985-2010 Telecommunications 1985-2010
Mouth or earpiece for early Bell telephone instrument used at Lloyds station, patented by Alexander Graham Bell, unknown maker, British, 1906. The mouth/ear piece is not original and was added by the museum in 1906 Mouth or earpiece for early telephone by Alexander Graham Bell, 1906. Telecommunications 1906
