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Old June 9th 09, 01:32 AM posted to rec.radio.amateur.antenna
Jim Lux Jim Lux is offline
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First recorded activity by RadioBanter: Mar 2007
Posts: 801
Default Mag Mount lesson

wrote:
On Jun 8, 3:41 pm, dave wrote:

Have a receiver type trailer hitch installed.


Nothing to attach one to unless you installed
some kind of frame underneath the rear of the car.
There is nothing underneath except the bottom
of the trunk floor if I remember right.


You can get a "light duty" receiver for almost any car (used to hold
bike racks and the like). I was going to go that route for my BMW 325,
but after looking at the design, I built my own.. A piece of 1x1 square
tubing bolted to the bottom of the spare tire well (this is what the
trailer hitch bolted to). Drilled two 3/8" holes in the bottom of the
well to bolt it on.

Then, the antenna mounts on bracket made of the nesting square tubing
(e.g. 3/4") and there's a 1/4" pin that holds it in. I just slid the
3/4" tubing in and drilled both together (guaranteed registration of the
holes!)..

The 3/4" tube (which is roughly horizontal) is joined to another
vertical piece of tubing, to which a SGC tuner and the 9-10 ft whip is
attached.

http://home.earthlink.net/~w6rmk/mobile.htm

Why not use the trailer hitch? Because when I called around to buy one,
nobody local had one in stock, and I was motivated to "get it done today"..

But even if I could mount a hitch mount, I'm not
sure how happy I would be with it.
Generally, that's about as bad a place to mount
an antenna as you can find.
The one method I might consider would be a trunk
lip mount. And even that makes me paranoid as
I'm worried the stress of the antenna whipping
back and forth will warp the trunk lid after a
period of time. The metal is pretty thin on that car.
"Toyota Corolla".


I use a Comet trunklip mount for the VHF/UHF whip. If you adjust the
angle right, it clears the roof of the car when you open the trunk.
CP-5NMO

http://www.cometantenna.com/products...D=9&childID=14



I've just been taking my radio with me, and using
the antenna's I have at the site.
B