"Bob Minchin" wrote in message
...

A phase modulated signal is sent out on Radio 4 longwave, 198kHz which is
detected by the leccy meter and switches the consumption recorded between
standard and off peak.

Does this directly control the meter switching from one tariff to another?

Correct me if I'm wrong, but I thought all this signal did was to keep the
time clock accurate, and the meter still switches over according to what
time
it was preset at when first installed?

Nick