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Author Topic: Diamond NR770HB  (Read 1553 times)
N1AAN
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Posts: 4




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« on: February 10, 2005, 02:29:05 PM »

Hello all, I want to mount my Diamond NR770HB on my 2002 Ford Taurus, but I don't want to use the BIG, CLUMPY, SPM35 MAG MOUNT....any body out there use or suggest the K400, K601, or any other mobile mounts??  When you look at the Taurus from behind the AM/FM antenna is on the left rear, so I was hoping to somehow be able to mount the NR770HB on the right side...kinda giving a symmetrical antenna look from behind...any thoughts gang???  Also, anyone have any RF problems, alternator humms, etc. with the Ford Taurus installations??  The rig will be the Kenwood G707A dual bander.

Thanks, N1AAN
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N3ZKP
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Posts: 2008




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« Reply #1 on: February 10, 2005, 02:36:46 PM »

Put it in the middle of the trunk deck (or the right side) using an NMO mount properly mounted in a 3/4" hole. Do not use a UHF mount. UHF connectors were made for connecting cables, not mounting antennas.

Lon
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N1AAN
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« Reply #2 on: February 10, 2005, 04:53:02 PM »

Thanks for the feedback.  Unfortunately I can't drill/make any holes in the car.  Just curious, why not a UHF mount?  The SPM35 mag mount with the NR770HB I used before is UHF and it worked exceptional.  Distant repeaters (70+miles), great simplex, etc...

Thanks again, Stephen  
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N3ZKP
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Posts: 2008




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« Reply #3 on: February 10, 2005, 05:43:02 PM »

Just out of curiosity, why can't you drill holes?

Why not a UHF mount? because UHF connectors were never meant to hold antennas. They were designed to connect cables to equipment or to another cable. The amateur radio antenna companies often use them because they are cheaper than a real antenna mount.

A UHF connector on a mag mount MAY work, but they are not strong, will not take the abuse of being stressed whan an antenna hits an obstruction. Installed in a hole they often leak, have NO support from the surrounding metal. The most telling point is, that if they were any good as antenna mounts, then the manufacturers of commercial grade (ie professional grade) antennas would use them. I am unaware of any that do. All the commercial antenna manufacturers use NMO connectors.

Properly installed in a hole of the correct size, they are very rugged, do not leak and have support of the metal surrounding the hole. I have been installing them on all kinds of vehicles for almost 40 years and have never had one leak or get pulled out of the hole. I would use nothing else. If the antenna you want doesn't come in an NMO mount, change brands of antennas.

FWIW, the very best value in amateur antennas is the Larsen line, especially the NMO270 and NMO270B. Only 36" tall, they will keep up with any of the much taller Comets and Diamonds and are much more durable. Mine have survived tree limbs, garage doors, parking garage ceilings and hardle have a scratch on them, despite being almost 10 year old.

Lon

PS - except for very temporary use, mag mounts are a lousy idea, for a variety of reasons.

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N1AAN
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« Reply #4 on: February 11, 2005, 04:50:48 AM »

Thanks for the feedback.  I have some things to think about.
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KB7QWZ
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« Reply #5 on: February 28, 2005, 08:34:46 AM »

I put one of these on my 2002 Taurus on the K600 and it works beautifully.  I put it on the right side and adjusted it to the same slant as the standard antenna on the right side.  It is used for a Kenwood TM741A but when I put the 6meter mod in it I had to go to a triband antenna which is just a couple inches longer and also works great.  I also have a center rear window glass mount that I used previously but it was not very good.  My wife won't let me take the glass mount off as she likes how it looks, also on the same slant.  Since the car is black, it is strange that when I approach someone from the rear or someone approaches me from the rear they all slow down.
 73
Dave
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