Posted by fred bramley on August 18, 2023, 8:39 pm, in reply to "Re: Should Radio 4 remain on the Longwave ? "
...to enable the switching on of large numbers
of night storage heaters and water heaters to be staggered to avoid sudden large increases in
load as night rate systems cut in. More recently, it has been developed as a tariffing system.There are thought to be in excess of 3 million RTS equipped meters in the field
The other user of the system is the Environment Agency who use the system to disseminate flood warnings. Messages are encoded onto the Amplitude Modulated (AM) Radio 4 signal using Phase Shift Keying (PSK) techniques.
teleswitching LW
