[midshires]

> Someone told me once that most of the ones beginning with a "Y" are transmitter sites, as the "Y" is supposed to represent an aerial.

It was Y for WIreless and originally all Y sites related to wireless transmitting and receiving stations.

Later television transmitting stations were included in the Y category, radio and TV studio locations and microwave locations such as YTOW (the London Telecom Tower).

I was assure that YIYI was allocated to a Y location in Newcastle-upon-Tyne but my informant couldn't remember which one. It sounds highly appropriate though; why aye mon!