Cold Cathode Clocks
Soon after the construction of the new Long Wave High Power Transmitter was announced, the introduction of Time Signals as part of this service began being discussed.
The problem with using landlines for time signals was that there would often be a varying delay. The test time signals had to be radiated and received at the Royal Greenwich Observatory and the clocks adjusted to allow for any delay. On 1st April 1960 this problem was solved with the introduction of two ‘cold cathode electronic clocks’ at Rugby. The clocks were based on the design of clocks built in 1956 for the Rugby MSF Time Signal service.