"S20" (or "V40" as I suppose we should call it now that 12.5 kHz channels
have come into use) is the calling channel,

Hi Ivor

I left the UK just as 12.5 channels were being implemented. Are they being
used? Or does everyone still use the old channels but with narrower
deviation?

"CQ V40" just doesn't seem to sound right to me )

--
Jack VK2CJC / MM0AXL
FISTS# 9666
Mid North Coast Amateur Radio Group
www.mncarg.org