Criggion Radio Station
of Criggion, Montgomeryshire.
1940 Plans were made to construct two HF (High frequency or short-wave) radio stations, an LF (low frequency) station and a VLF (very low frequency) station, as a reserve for the VLF transmitter at Rugby should it succumb to enemy action.
1942 Two HF transmitters were commissioned - one was a Standard Telephones and Cables type CS3B, and the other was a Marconi type SWB8.
1943 The VLF transmitter was brought into service early to take over the VLF duty of the Rugby Radio Station on a frequency of 16 kHz when that station was destroyed by a fire. After Rugby's restoration, Criggion transmitted at frequencies of 15.2kHz / 15.4kHz.
1967/68 A larger VLF aerial system was installed.
c1971/2 the HF services were discontinued.
2003 The VLF and LF services were discontinued.
See Also
Sources of Information
- [1] Criggion history