Swanfis
Does 'cross coupling' mean that the aircraft calls are actually re-broadcast by ground stations on the other channels? That's quite a novelty to my mind and might explain how I can hear planes at Lydd when I am at STU.
My experience is that 125.47 does work in the 'Tolka triangle' although it can't be found on the S. England 1/2 mil chart. I have previously suggested that the frequency be put on the chart in place of or as well as the 124.75 which doesn't work up to 5000' right where it is printed in great big letters on the sea W of Holyhead!
David