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fredsub
22nd May 2009, 11:29 PM
I have a GME uhf, but no bull bar now....

I know of the bonnet bracket as shown here http://i225.photobucket.com/albums/dd194/mavdog89/finished.jpg

but i've always been put off by the ugliness of it and and not sure just how sturdy that L bracket is, afterall it only goes in ONE bolt hole...

I used to use a CD9000 antennae, it worked brilliantly......
not sure how good those antennae is in the pic above really are, but I guess there is little choice.......

maybe drilling a hole is a better option? anyone done it? ...it may as well be permanent ay?

I also hate the vast sloping dashes of newer cars....so hard to put something somewhere:confused: another reason why I haven't done anything on it yet......

eden
23rd May 2009, 06:25 AM
OUCH! hard Q's dude. i haven't heard of anyone drilling holes but it can be done as i was thinking about it before i bought a front bar. if you do it? buy a tube of sikaflex (good grade silicon) and seal the hole after the primer job;):)

Subarino
23rd May 2009, 06:56 AM
Im a CB installer by trade so i may be able to help.

The antenna in the pic is a good antenna when mounted correctly (that one is not).
That antenna in the pic needs a ground plan in order to function correctly... it is meant to be mounted in the center of a flat steal roof which is not an option for most people. It will work but not very well.

A CD9000 is the type of antenna best used on the mount on the photo above and on bull bars. This does not need to be earthed at the base nor does it need an earthling play (flat steal surface).

There are 2 grades of what we call "Z" Brackets shown in your photo. One is Stainless steal and one is not... the one that isn't is half a mm thicker. This makes a LOT of difference to the amount of flex in the bracket. The one that is not stainless steal (the thicker one) i have never seen rust so i have no idea what it's made out of... maybe it is zinc coated but i would recomend it if you are going to mount it like the one above.

I will upload a photo of what i have done on mine... i still might change it cos i am a little picky... but it has left no holes or marks on it what so ever and it attaches under the bonnet with grub screws.

Also as far as mounting of the unit goes... there are many units on the market that allow you to mount it almost any place you like. The GME tx3440 and GME tx3420 spring to mind.

Dave

Subarino
23rd May 2009, 08:59 AM
Here are some photos.
http://thumb9.webshots.net/t/64/664/1/83/7/2035183070042305049BwshLh_th.jpg (http://rides.webshots.com/photo/2035183070042305049BwshLh)

http://thumb9.webshots.net/t/64/664/2/3/56/2388203560042305049RSFJwU_th.jpg (http://rides.webshots.com/photo/2388203560042305049RSFJwU)

http://thumb9.webshots.net/t/62/762/0/47/83/2232047830042305049FUokEG_th.jpg (http://rides.webshots.com/photo/2232047830042305049FUokEG)

http://thumb9.webshots.net/t/62/762/8/41/32/2617841320042305049ALrnxK_th.jpg (http://rides.webshots.com/photo/2617841320042305049ALrnxK)

http://thumb9.webshots.net/t/74/174/9/53/42/2717953420042305049hkQQao_th.jpg (http://rides.webshots.com/photo/2717953420042305049hkQQao)


Dave

belayslave09
23rd May 2009, 09:59 AM
I don't have any pics handy sorry (will try to remember to grab some).

I've mounted my antenna on the same type of bracket as pictured above. Used two coated self tapping sheet metal screws to mount it. (pre drilled pilot holes) I was pretty worried about how it would go but it's been surprisingly strong. I use a GPI antenna with a HD spring at it's base. it regularly gets a hammering and bent over at some extreme angles and have had no issues with the mounting bracket strength at all.

P.s. I'm using a GME TX4400 and been happy with it.

fredsub
23rd May 2009, 10:30 PM
The CD9000 is a bit of a beastie antennae, have doubts the Z type bracket
could support it robustly....

Agreed,the antennae in the pic above is not ground independent, which is what is needed.

Thanks for the heads up on 2 grades of the "Z" bracket.
DSE shows 4 brackets in their catldog !!.....D5155,D5153,D5152,D5156
http://search.dse.com.au/search?w=Z+bracket&x=6&y=12&asug=&sessionid=4a1891fa1bf5d9a2273fc0a87e010713&ts=new

Subarino
24th May 2009, 12:14 AM
The 2 brackets i was on about were the GME brand MB407ss (Stainless steel) and the MB407 (Half a mm thicker). We use these on high gain phone antennas that are almost identicle to CD9000.

Dave

Kevin
24th May 2009, 08:26 PM
^ Interesting stuff Dave. I have been wondering about the quality of my antenna (it's a DSE 5 or 9 extendable type) and I've been thinking of switching to a GME.


Before I had my bullbar I mounted the antenna on the rear of the bonnet bracket. The plastic end covers on either side of the air dam in front of the windscreen attach to the rear of the bonnet brackets. By removing the plastic plug and cover, you then drill the hole out just slightly larger so an antenna post can be attached. Attach the post which is fiddly because you have to lay the nut under the bracket and screw the post into it. Put the plactic trim piece back on then install the antenna base onto the post.

carljwnc
26th May 2009, 07:35 AM
I am now able to see both the individual pic posts & the post with all the pics in it.

Regards
Mr Turbo

I approved the post again, for some reason it didn't work the first time, this time it seems to have worked.:)

Subarino
26th May 2009, 08:26 AM
I cleaned up my posts. Thanks for getting them photos to pop up.

Dave

carljwnc
26th May 2009, 03:37 PM
I cleaned up my posts. Thanks for getting them photos to pop up.

Dave

Thanks for cleaning them up!!!:) And glad I was able to get them to work.

Kevin
26th May 2009, 08:07 PM
More cleaned:iconwink:! Will tidy up again tomorrow morning

fredsub
26th May 2009, 09:18 PM
back to topic...
Thanks Dave, thats certainly interesting mount,
so where did you get that style from ? or did you bend up a
MB407 ?

You would also have to be cautious opening the bonnet, no?

Subarino
27th May 2009, 08:47 AM
It is a Benelec brand mount available exactly how u see if. Part Number 027304

The way i ran the cable there is no worries with open and closing the bonnet... the cable nicely bends around with the mount... it's a very clever design acually.

http://www.benelec.com.au/mobile_ant/images/027304.jpg

Dave

Bumper
28th May 2009, 07:44 PM
I'm still pretty chuffed with my antenna - it's mounted inside on the rear window (the opposite one to the standard FM aerial). It stops the nasties bending/breaking/stealing the antenna, and so far I've been happy with the performance. It may not reach as far as a 'proper' antenna, but suits me just fine!

Subarino, a question: I was listening to the Sydney scumbags on a repeater and heard them say that putting a CD at the bottom of the mount gives a better ground plane ad signal. Is that true?

mr turbo
29th May 2009, 05:24 AM
I was listening to the Sydney scumbags on a repeater and heard them say that putting a CD at the bottom of the mount gives a better ground plane ad signal. Is that true?
Haven't heard that one before, but in theory, I can see where they are coming from, if that makes sense.

Regards
Mr Turbo

Subarino
30th May 2009, 07:06 AM
Subarino, a question: I was listening to the Sydney scumbags on a repeater and heard them say that putting a CD at the bottom of the mount gives a better ground plane ad signal. Is that true?


I seriously doubt it... and if it did anything at all it would be very very little. When they say a ground plan they are talking about a significant amount of area not a few inches.

There has been evidence that proves that non-ground plan independent antennas that a mounted to one side of a flat steal car roof has much much more range on the side that has the most ground plan and has very little range in the direction on the side the antenna is mounted.

I have also heard stories of people putting their front wheels of there car in the ocean and being able to talk to people in Japan... again, the therory is there cos they could be using the ocean as some sort of ground plan but i have never seen it myself.

Dave

Bumper
30th May 2009, 08:36 AM
I have also heard stories of people putting their front wheels of there car in the ocean and being able to talk to people in Japan... again, the therory is there cos they could be using the ocean as some sort of ground plan but i have never seen it myself.

Dave

Yeah, they used to say that with the old AM SSB units. Tried it once but just got wet wheels:p

jg09
12th June 2009, 03:57 PM
Here's what I do:

Use a through-the-glass antenna. Stick one side to the outside of the glass, stick the other to the inside in the same location. Trim the end of the antenna so that it looks like a Chevy Onstar antenna, use this for short range.

Drill into either your hatch or your roof rack (I'm into my roof rack) and mount a k-4 antenna stud (I run 2). The studs aren't very noticeable when antennas aren't threaded into them. When you need more range than the through-the-glass, thread on any conventional CB antenna (I have two 4 foot Firestiks on hand, I never run both, one's just a backup). You'll be able to see the wires running from the bottom of your roof rack, but that's no big thing.

I might undo my roof rack studs and just get front fender mounted brackets and run the 4 footers on the front all the time. I personally like that look.

Ravenwoodranch
16th November 2010, 10:04 PM
It is a Benelec brand mount available exactly how u see if. Part Number 027304

The way i ran the cable there is no worries with open and closing the bonnet... the cable nicely bends around with the mount... it's a very clever design acually.

http://www.benelec.com.au/mobile_ant/images/027304.jpg

Dave
do you know if they will ship to the usa?

Kevin
16th November 2010, 10:43 PM
^ probably better to ask them directly:

http://www.benelec.com.au/

Rally
17th November 2010, 03:34 AM
I still run a bracket which is stuck to the outside of the windscreen which runs an external aerial. You get the benefit of an externally mounted aerial mounted at roof height without being attached to any painted surface. No marks, no damage. You can get them for under $25. I need to find a better way of securing the coax, but I've been too lazy!