I have a Regency Polaris MT550XL scanning marine vhf set. It's an older
one, but still works good.

Problem is the mike is missing, for some reason. I have a spare, but will
need to put a replacement plug on it. I need a 5 pin twist lok plug for the
unit, and a way to figure out which wires in the mike go to which pins in
the plug.

Using the chassis socket, I can find a ground pin. That takes care of one
side of the mike element, and the PTT function. I can also power the set
and find which pin is 12v+. That leaves the mike element audio lead. How
do I ID that one (that only leaves three pins, so it's one of those)? Any
tattletale resistance to ground for the audio pin? I think the remaining
two pins are probably unused, after getting the three right for the mike
cord.

And yes, I'm trying to get a schematic. That would make it much easier.
I've searched around and don't find one yet. Sams Fotofact may have one.
I've asked them. Their search engine doesn't come up with one, though.

Where can I get a 5 pin twist lok mike plug? Don't know what the actual
name of such is, so may not be able to find because I won't be searching
under the right name for it.

"RB" wrote in message
. ..
I have a Regency Polaris MT550XL scanning marine vhf set. It's an older
one, but still works good.

Problem is the mike is missing, for some reason. I have a spare, but will
need to put a replacement plug on it. I need a 5 pin twist lok plug for
the unit, and a way to figure out which wires in the mike go to which pins
in the plug.

Using the chassis socket, I can find a ground pin. That takes care of one
side of the mike element, and the PTT function. I can also power the set
and find which pin is 12v+. That leaves the mike element audio lead. How
do I ID that one (that only leaves three pins, so it's one of those)? Any
tattletale resistance to ground for the audio pin? I think the remaining
two pins are probably unused, after getting the three right for the mike
cord.

And yes, I'm trying to get a schematic. That would make it much easier.
I've searched around and don't find one yet. Sams Fotofact may have one.
I've asked them. Their search engine doesn't come up with one, though.

Where can I get a 5 pin twist lok mike plug? Don't know what the actual
name of such is, so may not be able to find because I won't be searching
under the right name for it.

Can't help you with the pinouts but Mouser Electronics may be the place to
look for a plug. They list 4,734 "circular connectors".
http://www.mouser.com/

This may not be much help, but the connector is usually referred to as a
"five pin din twist lock mic plug", and was available (in my day) in a
straight or 90 degree (L shaped) shell. I see them listed on the following
web site, but there are a couple there that sound right....... better call
first!

http://www.kenselectronics.com/lists/micplug.htm


Old Chief Lynn

"RB" wrote in message
. ..
I have a Regency Polaris MT550XL scanning marine vhf set. It's an older
one, but still works good.

Problem is the mike is missing, for some reason. I have a spare, but will
need to put a replacement plug on it. I need a 5 pin twist lok plug for
the
unit, and a way to figure out which wires in the mike go to which pins in
the plug.

Using the chassis socket, I can find a ground pin. That takes care of one
side of the mike element, and the PTT function. I can also power the set
and find which pin is 12v+. That leaves the mike element audio lead. How
do I ID that one (that only leaves three pins, so it's one of those)? Any
tattletale resistance to ground for the audio pin? I think the remaining
two pins are probably unused, after getting the three right for the mike
cord.

And yes, I'm trying to get a schematic. That would make it much easier.
I've searched around and don't find one yet. Sams Fotofact may have one.
I've asked them. Their search engine doesn't come up with one, though.

Where can I get a 5 pin twist lok mike plug? Don't know what the actual
name of such is, so may not be able to find because I won't be searching
under the right name for it.

Thanks. Ordered one.

You might want to try "www.a-1marine.com", their e-mail address is
". They carry parts and repair these units. I was
able to get a manual for mine, I suspect they might be able to sell you
a schematic or a new mike.

John