Hi Chris,
Thankyou for your input.
So I measured as you mentioned and nothing - . So I put the multimeter on the DC input jack and it was only showing 7v (from a 12v input)
Tried another DC cable I had from a swr meter and bingo it started up straight away.
I haven't investigated the supplied DC cable yet, but the problem is solved and the radio has noe been updated.
Radio now displays 7.074 and I hear noises.
OK I'm off to find a cw key / SWR meter etc and do some RF tests.
Mike
