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Old 03-20-2012, 11:07 AM   #751
DeathSStar
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Quote:
Originally Posted by amham View Post
Wow, now that's a setup I had no idea ef Johnson was still around...
EFJ was dormant for a while, but they are making a comeback in the public safety market. The radios are made in Dallas and they still have an office in Waseca MN as far as I'm aware.
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Old 03-20-2012, 02:16 PM   #752
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NMO-K is the bit that you'll install through your roof. That's the actual mount. Then NMO-2/70B is the antenna which will screw onto the top of the mount.
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Old 04-15-2012, 12:44 PM   #753
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I'm looking for a new antenna since my Cobra crapped out on me. I really dont wanna put it on the trunk so i was considering a NMO mount but was also wondering if you guys have any luck with through-glass mounts. I know the reception wont be crazy good but I would only need it to go a few miles.
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Old 04-15-2012, 02:59 PM   #754
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Through-glass mounts are worse than mag mounts. They're terribly inefficient. Plus, there's no way in hell you can get a long enough antenna to stick to a piece of glass without shattering the glass the first time you hit a bump.
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Old 04-15-2012, 03:34 PM   #755
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I use dual-band glass-mounts for VHF/UHF. They work fairly well on those bands for repeater operation. They do exist for CB, but for the longer-wavelength band are too much of a compromise.
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Old 04-15-2012, 03:37 PM   #756
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I use dual-band glass-mounts for VHF/UHF. They work fairly well on those bands for repeater operation. They do exist for CB, but for the longer-wavelength band are too much of a compromise.
Yeah but for V/U-HF, a reasonable length antenna doesn't apply as much leverage to the glass as it would for a CB. I actually have seen one break a window in person and seen pictures of a second failure.
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Old 04-15-2012, 10:52 PM   #757
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I also had a vhf/uhf glass mount for a couple years with zero issues. As for CB, though, I opted against one after researching them extensively. They all had a really high VSWR and a very narrow bandwidth. I think the couple miles you're looking for is pretty much all you'll get, but...ymmv.

Good luck!

-Gonz
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Old 04-21-2012, 10:39 PM   #758
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How did I Just now find this thread?

*note to self, must take current install pics & post.
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Old 04-22-2012, 12:41 AM   #759
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Quote:
Originally Posted by DeathSStar View Post
EFJ was dormant for a while, but they are making a comeback in the public safety market. The radios are made in Dallas and they still have an office in Waseca MN as far as I'm aware.
Lol, I'm going there tomarrow to cut grass > Waseca
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Old 04-22-2012, 12:49 AM   #760
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How did I Just now find this thread?

*note to self, must take current install pics & post.
Dude, welcome to 1999
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Old 04-22-2012, 09:48 AM   #761
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Hello from Australia.
A bit of a teaser for a more comprehensive write up i will do over the next few weeks.








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Old 04-23-2012, 10:03 AM   #762
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How'd you get the steering wheel on the other side? And where's your "Roo catcher?"

Welcome & Looking forward to the comprehensive write up with details on what radio does what! Be sure to include antenna install notes if you don't mind as many posts revolve around where to put the antennas on our vehicles. Are you also a ham? If so, I'd like to work you on 10m mobile from the Saabaru.

73's - Gonzo
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Old 07-04-2012, 11:39 AM   #763
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Im posting bits and pieces as i go along, im constantly changing my setup. I've sold a few radios that werent used very often, im sure i'll be happy with my set up one day.

Today i installed an NMO mount and Antennex Phantom on the rear of the car.

Rear panels removed and headliner dropped.





A view of the underside of the factory stereo antenna.



Factory stereo antenna removed to allow some breating space and a pilot hole drilled.



NMO hold drilled.



Mount installed.



Side on view, factory stereo antenna back on.



An underside view of the NMO mount and the factory stereo antenna.



All done, factory stereo antenna back on and the Antennex Phantom on!







I am aware its a bit close to the stereo antenna and will wipe it out during transmission, the radio is used 99% of the time as recieve only.
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Old 07-04-2012, 12:03 PM   #764
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Old 07-04-2012, 02:28 PM   #765
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Quote:
Originally Posted by alexmc View Post
Today i installed an NMO mount and Antennex Phantom on the rear of the car.
What do you think you're going to do with that antenna? It's not resonant on any amateur band, CB, FRS, or GMRS. That's not me being snarky, I'm honestly curious what your use for that is since it's obviously something unusual.



Quote:
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You realize your install for that sucks hardcore, right?
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Old 07-04-2012, 02:42 PM   #766
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Thanks for those pics, alexmc, gives me a few clues as to what I'll be dealing with when I get motivated enough to pop a few holes in the roof.

Nice /\/\ setup too.
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Old 07-04-2012, 04:29 PM   #767
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You realize your install for that sucks hardcore, right?
Please enlighten me. It's been working pretty well for what I wanted it for.
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Old 07-04-2012, 04:35 PM   #768
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Please enlighten me. It's been working pretty well for what I wanted it for.
It hasn't been working perfectly well, you just don't have experience with a proper installation to compare it to.


Everything you need to know to understand why your install is one of the worst possible ways to do it is already in this thread. I've repeated it half a dozen times for different people already. You need to read this thread looking for discussions about on- vs in- metal, RF Groundplane, and radiation resistance. All the info you need is clearly laid out for you.
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Old 07-06-2012, 11:05 AM   #769
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Quote:
Originally Posted by williaty View Post
What do you think you're going to do with that antenna? It's not resonant on any amateur band, CB, FRS, or GMRS. That's not me being snarky, I'm honestly curious what your use for that is since it's obviously something unusual.
There's nothing unusual about the Phantom, there quite common.
What's it used for? Down here in Australia our CB is on 470MHz and a Motorola P25 Trunking network on 420MHz.
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Old 07-06-2012, 12:03 PM   #770
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Quote:
Originally Posted by williaty View Post
It hasn't been working perfectly well, you just don't have experience with a proper installation to compare it to.


Everything you need to know to understand why your install is one of the worst possible ways to do it is already in this thread. I've repeated it half a dozen times for different people already. You need to read this thread looking for discussions about on- vs in- metal, RF Groundplane, and radiation resistance. All the info you need is clearly laid out for you.
I understand it's not "ideal" and that it should be centered in my roof but for my clearance needs and not wanting to rip out my headliner during the install (personal preference) I found the fender mount to work pretty well. It is well grounded, SWR tuned and reaches pretty far out on the interstate and up in the mountains. I know it could be better, but with how well it works now for my purpose, I don't see the need. Other than where it's located, do you have any other tips for my setup?
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Old 07-06-2012, 03:20 PM   #771
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Quote:
Originally Posted by alexmc View Post
There's nothing unusual about the Phantom, there quite common.
What's it used for? Down here in Australia our CB is on 470MHz and a Motorola P25 Trunking network on 420MHz.
Ahhh... that's the missing detail. I always forget you guys have a CB allocation up in that range.

Quote:
Originally Posted by bedheadben View Post
I understand it's not "ideal" and that it should be centered in my roof but for my clearance needs and not wanting to rip out my headliner during the install (personal preference) I found the fender mount to work pretty well. It is well grounded, SWR tuned and reaches pretty far out on the interstate and up in the mountains. I know it could be better, but with how well it works now for my purpose, I don't see the need. Other than where it's located, do you have any other tips for my setup?
It's not well RF grounded where it is. You may have properly electrically grounded it, but that has nothing to do with RF ground.

Effectively, the problems with that install are that it isn't RF grounded, the metal it's in needs to be flat, not highly formed and mostly vertical, the panel it's in needs to be considerably larger, it needs to be in not above a panel, and it needs to be in a position where there's not other parts of the car shadowing it.

If you are happy with it, then there's no need to do anything about it but that doesn't magically make it a good install, it just means you have low standards.
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Old 07-18-2012, 09:22 PM   #772
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Just read through this entire thread over the course of a few days, wow what a ton of great information. A question, mounting on a 2010 wagon with a sunroof where is the ideal location? The direct center of the roof is missing metal in front of the antenna because of the sunroof opening. Where would I mount in this situation?
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Old 07-19-2012, 12:44 AM   #773
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Quote:
Originally Posted by Dmsullivan2 View Post
Just read through this entire thread over the course of a few days, wow what a ton of great information. A question, mounting on a 2010 wagon with a sunroof where is the ideal location? The direct center of the roof is missing metal in front of the antenna because of the sunroof opening. Where would I mount in this situation?
Indeed - lots of good info on here. Lots of differing opinions, so feel free to contribute.

...interesting. So the skin of the vehicle is not metal between the sunroof & the hatch? The next best option (imho) would be towards the front, between the windshield and the sunroof, but you may run into the motor harness, wires, etc. What type of antenna?
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Old 07-19-2012, 01:31 AM   #774
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Wherever you do have the biggest sheet of metal, put it dead center in that. If all the roof isn't metal, well, Subaru screwed you.
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Old 07-19-2012, 06:08 AM   #775
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Let me clarify, my roof is made of metal haha... I was confused though with the sunroof opening there is a giant hole in my roof so dead center of the roof would be like 3 inches behind the sunroof, leaving no metal in front of the antenna. but I think Ty explained it already as saying dead center of the largest piece of metal, so just further back on the roof.
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