Modulator and sub-modulator unit from Daventry short-wave transmitter
- Made:
- 1932 in United Kingdom
Modulator and sub-modulator unit from modulation transformer taken from the original short-wave transmitter at Daventry, made by Standard Telephones and Cables Limited for the British Broadcasting Corporation, 1932.
These units were taken from the first short-wave radio transmitter to be installed at Daventry in 1932. Radio transmissions had been made from Daventry since 1925, but the shortwave receivers were installed specifically for broadcasting radio programmes to the Empire via the Empire Service (later the BBC World Service). Four two-hour programmes were provided daily, broadcasting initially only in English to Australia and New Zealand, India, East and Southern Africa, West Africa and Canada. On the first day of the Empire Service, Sir John Reith, the first Director General of the BBC, gave the Empire Service’s opening address. His speech included a warning about the quality of the new service: "Don't expect too much in the early days; for some time we shall transmit comparatively simple programmes, to give the best chance of intelligible reception.”
Details
- Category:
- Radio Communication
- Object Number:
- 1970-44
- Materials:
- metal (unknown), glass, plastic (unidentified) and electronic components
- type:
- rf modulator
- credit:
- Donated by the British Broadcasting Corporation.
Parts
STC 4212 E triode valve from Daventry short-wave transmitter
Modulator and sub-modulator enclosure from Daventry short-wave transmitter
- Object Number:
- 1970-44 Pt3
Modulation Transformer from Daventry short-wave transmitter
Modulation Transformer Serial No. 81480 by Ferranti from Daventry short-wave transmitter, made by Ferranti Limited, Hollinwood, 1925-1970
Triode valves from Daventry short-wave transmitter
- Materials:
- glass , metal (unknown) and plastic (unidentified)
- Object Number:
- 1970-44 Pt5
- type:
- thermionic valve