Yes, Ed is correct, it is the type of mount that Antenna Specialists uses.
Here is a link to some of their mounts, including the style you have:
http://www.antennaspecialists.com/lm_cat/lmrpg37.html Look at the K-49
and K-57
What it is, is a modified PL-259/SO-239 design, where the male and female
portions of the center connector have been swapped. In fact, looking
further on the website, I see where they are now selling a replacement solid
center pin, so the antennas can be mounted on a standard SO-239 mount.
These used to be very popular with Public Safety, gray coils about 7/8" in
diameter. I have no idea what brand of antenna you have, though.

M


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"Dragon Doctor" wrote in message
...
On Tue, 04 Nov 2003 02:31:22 GMT, "Ed G."

wrote:
This 5/8 wave 2M stick has been riding around in the back
of my 4x4 for years and I've forgotten what brand it is and I now
need a hole type mount for it.
Anybody recognize this from the pix?
http://f1.pg.photos.yahoo.com/ph/dra....dir=/ant+base

You didn't provide much picture of the antenna, only the base, but
from
what I can see, it looks like the type Antenna Specialists uses.

I guess my first message wasn't clear, what I need to know is what mount
is
that? I've looked at pictures of NMO, SO239 and other but they don't
match,
I'm thinking it some form of N connector, if there is such a mount.
Thanks.