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eHam Forums => Mobile Ham => Topic started by: WPQX931 on January 22, 2002, 12:34:21 PM



Title: Variable angle nmo mount
Post by: WPQX931 on January 22, 2002, 12:34:21 PM
Greetings,

Has anyone seen a variable angle nmo mount?  I put a hole on top of my rear fender. when I mounted the antenna, it pointed back and out a lot more than I expected.  In fact it looks ugly. I tried to bend the rod a little, but push the SWR way up, so I am stuck with a hole in my car or an antenna sticking out in an unattractive way.  

I have seen one such mount in the Maxrad catalog, but I have not been able to find one anywhere yet.  Any ideas?

Help! Help!



Title: Variable angle nmo mount
Post by: KC5JK on January 22, 2002, 05:40:04 PM
Comet makes an adjustable, but I believe it is a trunk lip mount, which is not appropriate for you.  I have seen many users bend the whip, immediately above the spring or loading coil, but that seems to put the whip too close to some conductive object that makes retuning unworkable for you.
Since the hole is already there, and assuming you don't want to patch it and start over, you might try making an inclined "wedge" that will insert between the vehicle body and NMO mount, to change the angle.  Many good time radio antennas are made with such a wedge, which rotates to a position that makes the whip stick straight up.


Title: Variable angle nmo mount
Post by: WPQX931 on January 22, 2002, 10:18:18 PM
I saw the MPM mount in the Maxrad catalog, but I have not seen anyone selling it.  

The other option is to find a antenna/coil combo that has a balltype spring on it.  I thought I saw something in the Hustler line, but can't find it again.

Alex

I like the wedge idea too.  



Title: Variable angle nmo mount
Post by: ASTEFFES on January 22, 2002, 10:43:13 PM
Diamond K400 trunk-lip mounts are totally adjustable and very strong.  Call HRO for specific models.
  -Adam


Title: Variable angle nmo mount
Post by: WPQX931 on January 28, 2002, 11:25:46 AM
Thanks for everyone's response.

I fixed the problem this weekend.  It was a problem in the rod.  It must not be bend too aggressively.

I replaced the rod and bend it in a less agressive curve. and the SWR drops back down to 1.1.  Now I am picking up stations from 50-60 miles away.  I wonder what this antenna can do If it was on the roof.


Alex
KB3HLP