Hi Mark K, Ah there's 5 sites then, I thought was 4, on separate channels, better than a SFN

Many, Many years ago Working in London on PMR systems with remote TX sites, I Remember one
think was on Highgate Hill, Outside it was a Posh Piano shop, you went Upstairs and Whole room
was full of the grey Storno base rigs, all screwed round the wall, Originally all the feeders
came in thru holes drilled in the Window frame, Later they just smashed a small window for more

Interesting Antenna the Low profile ones, what? were they actually called then ?
The ones for duplex freqs, had two trimmers, peaked up on the TX and RX freqs
They Also used them up here on Northamptonshire, on the Bus stops for the display screens

Rod Watts