In message , Stubby
writes
Bob Moore wrote:
"M. J. Powell" wrote

Except ICs instead of valves?
It wasn't the size of the electronics, but rather the
large antenna array required of the VOR system. A VOR
antenna must be permanently aligned to the earth,
something not possible with such a large array onboard
a ship. The TACAN system operating on a different principle than VOR
solved the size and alignment problems.
Bob Moore
Can you either explain how a TACAN works or provide a reference? Thanks.

I can't, sorry. I've long forgotten it. Even though I was supposed to
write the Vol 1 for the RAF. After a fortnight they posted me!

Mike
--
M.J.Powell