Strange Aerial connection

**doki** · May 9th 07, 02:16 PM posted to uk.rec.audio

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?

**Laurence Payne** · May 9th 07, 02:41 PM posted to uk.rec.audio

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.

**doki** · May 9th 07, 02:45 PM posted to uk.rec.audio

"Laurence Payne" lpayne1NOSPAM@dslDOTpipexDOTcom wrote in message
...
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.

I've only got the boggo bit of wire with a connector on the end as supplied
with cheap mini systems and a proper RF connector aerial. Nothing that'll go
in the holes provided.

**Serge Auckland** · May 9th 07, 02:46 PM posted to uk.rec.audio

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.

S.

--
http://audiopages.googlepages.com

**Laurence Payne** · May 9th 07, 02:49 PM posted to uk.rec.audio

On Wed, 9 May 2007 15:45:21 +0100, "Doki" wrote:

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.

I've only got the boggo bit of wire with a connector on the end as supplied
with cheap mini systems and a proper RF connector aerial. Nothing that'll go
in the holes provided.

Oh, don't be so helpless! Bodge it! :-)

**Mike Cawood, HND BIT** · May 9th 07, 03:10 PM posted to uk.rec.audio

"Doki" wrote in message
...

"Laurence Payne" lpayne1NOSPAM@dslDOTpipexDOTcom wrote in message
...
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.

I've only got the boggo bit of wire with a connector on the end as
supplied with cheap mini systems and a proper RF connector aerial. Nothing
that'll go in the holes provided.

Do it the professional way, stick the wires in with matchsticks.
Regards Mike.

**doki** · May 9th 07, 03:18 PM posted to uk.rec.audio

"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?

**madmike** · May 9th 07, 03:50 PM posted to uk.rec.audio

On May 9, 3:16 pm, "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?

Oh come on you lot, where have you been these last 30 years.

Its one of those plastic connections that come on the end of the pink
aerials we are so fond of. The outer two are for the signal and the
centre is just a plastic locating pin.
The AM version is the same with one of the outers at an angle. Can't
you still buy these ????

I would just stick two long wires in the outer two and hang them
decorously over the picture frame. If you don't have a picture frame
find a friend to hold it up.....

**Serge Auckland** · May 9th 07, 04:37 PM posted to uk.rec.audio

Doki wrote:

"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?
What's one of what?

S.

--
http://audiopages.googlepages.com

**doki** · May 9th 07, 05:18 PM posted to uk.rec.audio

"Serge Auckland" wrote in message
...
Doki wrote:

"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?
What's one of what?

A 300 ohm balanced downlead.