Looks like the stock VW antenna connector for the Heidleberg radio...

On Mon, May 17, 2010 at 12:57 PM, Michael Sullivan
<sandwichhead@gmail.com>wrote:

> http://picasaweb.google.com/sandwichhead/AntennaAdapter?feat=directlink
>
> Sorry, taken with my phone, but this is what the OEM (?) adaoter looks like
> that was in my van and I bought a Volvo adapter that works with the last
> two
> stereos.  This one is from by Bluetooth headset, but looks the same only a
> little smaller. I have not noticed a marked difference if I use the local
> option on receiver, but again, it only happens once in awhile.
>
> Michael in San Antonio
> 91GL Weekender AT 2.1L 'Gringo'
> 73 Beetle
>
>
> On Mon, May 17, 2010 at 2:37 PM, David Beierl <dbeierl@attglobal.net>
> wrote:
>
> > At 02:49 PM 5/17/2010, Michael Sullivan wrote:
> >
> >> The plug that is on the van DOES look like a Motorola a/c adapter I have
> >> for a Bluetooth headset.
> >>
> >
> > The first car radios were made by Motorola (hence the Motor...) so they
> got
> > to design the de facto standard antenna connector for them.  Nowadays
> it's
> > considered a bit bulky.
> >
> > d
> >
>