Synchronise the time on a TDS2020F computer

The 60kHz radio signal from Rugby in England delivers the date and time at a rate of 1 bit per second.

It can be received by an active antenna and used to accurately set the clock on a TDS2020F. Portable applications will always show the correct time, unaffected by crystal oscillator drift.

The time will be automatically adjusted for daylight saving twice a year.

Operation is entirely under interrupt so the foreground program is free for other operations such as data logging, display and keyboard servicing.

Connection to the TDS2020F is at one parallel port pin and it has two wires for the power supply. The library routine #TIMEUK.TDS has all the details.

Although the transmitter is in central England, reliable operation has been reported from as far away as Finland.

The active antenna size is 120 x 29 x 19mm and the order code is RADIOCLOCK-UK.

Picture for illustrative purposes only