"Serge Auckland" wrote in message
...
Laurence Payne wrote:
On Wed, 9 May 2007 15:16:42 +0100, "Doki" wrote:

I've got an old Aiwa Reciever, probably dates back to the 70s or early
80s - massive heavy aluminium front, needle tuner etc. Anyway, it's got
a rather strange connector on the back for the antenna - 3 holes in a
row marked "FM Aerial". Any ideas on what I should be hooking up to it?

A FM aerial? :-)

I suppose it might be a combined 75 ohm/300 ohm connector. Try your
FM downlead into any pair of holes, see which work best! I suppose
it might be worth looking for a voltage on any of the holes first,
just in case it's some special arrangement for e.g. powering a
mast-head amplifier.

My guess is that the outer two are for a 300 ohm balanced downlead with
the centre pin being ground. If so, then either connect a balanced lead to
the outer two pins, or a coaxial cable to either one (not both) and the
centre pin. It would be as well to check for volts as Lawrence has
suggested.

What's one of them then?