UHF Aerial

I am having trouble with my uhf aerial breaking. It is on the bull bar and breaks off at the end after doing 500klm. Is their any other aerial that is solid and won't fall apart.
Andy
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Reply By: cookie1 - Thursday, Jun 14, 2012 at 19:47

Thursday, Jun 14, 2012 at 19:47
Hi Andy, by end do you mean the bullbar end?

If so, have you got a spring base?

Cheers

Colin
AnswerID: 488471

Follow Up By: Member Andys Adventures - Thursday, Jun 14, 2012 at 20:29

Thursday, Jun 14, 2012 at 20:29
Hi Colin, I have a spring base and where it screws on to the spring base about 30mm up from their. It is fibreglass and when I tried to replace it a Kununurra they were sold out as it seems that is a common problem out here. I am thinking of moving it to the top of the pod.
Andy
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Follow Up By: cookie1 - Thursday, Jun 14, 2012 at 21:20

Thursday, Jun 14, 2012 at 21:20
I normally use a 1.5m 3 load aerial on those sort of bases and never had an issue as the unit flexes a lot, on the Canning I used a 1.9m rigid Desert Stick HD Antenna for long range, flat territory coverage but with a spring base and it was fine. Maybe look for a good flexible unit such as the Benelec "Faze 4" or Mobile One "Mega Blaster"

Hope this helps

Cheers

Colin
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Reply By: Polaris - Thursday, Jun 14, 2012 at 19:51

Thursday, Jun 14, 2012 at 19:51
If it is a stainless aerial - they aren't recommended for bullbars - they vibrate too much and snap off. Get a fibreglass one.
AnswerID: 488472

Follow Up By: Polaris - Thursday, Jun 14, 2012 at 19:53

Thursday, Jun 14, 2012 at 19:53
If you must have a stainless aerial - mount it somewhere else. "Z" bracket beside bonnet or off canopy or sportsbar or roofrack.
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Follow Up By: Member - Scrubby (VIC) - Thursday, Jun 14, 2012 at 21:30

Thursday, Jun 14, 2012 at 21:30
G`day Andy,
I have had a stainless aerial on the bullbar of my 60 series L/cruiser since 1985 and its still going after doing the Anne Beadel, Canning S/R, Simpson Desert, Cape York, Birdsville and outback Western Qld and heaps more rough stuff.

So don`t blame stainless aerials, it`s not the fault of the aerial.
I don`t know about your vehicle but I think you will find that some of the modern 4x4`s have a "crumple zone" at the front and because the bullbar is attached to this and not directly to the chassis there is a lot more vibration.

My mates 200 series L/cruiser vibrated everything that was on the bullbar to bits,
the sand flag bracket, the mobile phone aerial, the uhf aerial, the lightforce driving lights and sections of the ARB bullbar itself welds broke.
All because of the excessive vibration when going offroad.

Regards & safe travels,

Scrubby.

I don`t know where i`m going but i`m enjoying the journey.

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Follow Up By: Flighty ( WA ) - Friday, Jun 15, 2012 at 10:39

Friday, Jun 15, 2012 at 10:39
X2 on Scrubbies reply, I have had my arial on the bullbar for years with zero issues.
Mounting of bullbar point is the one to take notice of as some mounts are a bit suspect
Cheers
Flighty

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Reply By: Member - RobnJane(VIC) - Thursday, Jun 14, 2012 at 21:06

Thursday, Jun 14, 2012 at 21:06
G'day Andy,

We had a similar concern with our D22 Navara, and found that a short aerial, ie 150mm was the answer. We tried a couple of variations in construction of aerial and found that on that car anything longer simply danced around too much and on mild to severe corrugations would form a double S bend over its' length and then break.

The break was always around the 150mm length, once we fitted the 150mm aerial we did not experience another failure. On the D22 the bullbar moved around a bit and when when you have look under the car you can see why, maybe a similar check of your car could be worthwhile.

Hope this is of interest to you.

Rgds,

Rob.

RobnJane

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AnswerID: 488487

Reply By: David M2 - Thursday, Jun 14, 2012 at 21:59

Thursday, Jun 14, 2012 at 21:59
I would suggest mount to bonnet area Or roof rack
AnswerID: 488496

Reply By: Kris and Kev - Friday, Jun 15, 2012 at 06:44

Friday, Jun 15, 2012 at 06:44
We went through 3 tips on our antenna (2 while in the Kimberley last year!) before I went to TJM and bought a fibreglass type of tip. (I think it was about $27.) The steel tips just swing too much when on a bull bar, even with a spring base. The new tip does not flex as much and the spring appears to be taking more of the flexing, as it is designed for. (We have a 200 series and have lights fitted to the bull bar and they do not suffer from vibration.) Kevin
AnswerID: 488513

Reply By: Member Andys Adventures - Friday, Jun 15, 2012 at 08:51

Friday, Jun 15, 2012 at 08:51
Thanks for the reply's. I will look at relocating it. I will try to get one in Broome as their is not one of any sort in Kununurra, all sold out for the same reason.
Andy
AnswerID: 488527

Reply By: Gado - Friday, Jun 15, 2012 at 15:06

Friday, Jun 15, 2012 at 15:06
Hello Andy

We broke three different types of antenna on one trip, before deciding the bullbar on our car was just vibrating too much. The vibrating also broke the bullbar mountings (which have since been redesigned).

We now have a stainless antenna with spring base on a zed bracket on the side of the bonnet. It is firmly attached to the car with 2 bolts and plenty of silicone. Iit has lasted several trips with no problems, it waves about a bit but not in a jarring way.

In our case mounting on the body insulates it from most of the vibration which is in the chassis.

Just back from the Simpson desert where we used a quick release mount on the bullbar for the mining flag. The quick release fitting flew apart on the second day so we screwed the flag direct to the mount for the remaining few days where it lasted OK.

Cheers, Gado
AnswerID: 488557

Reply By: Gronk - Saturday, Jun 16, 2012 at 13:32

Saturday, Jun 16, 2012 at 13:32
I had a few failures before removing the spring base........problem solved..

It now sits rock solid....but my bull bar doesn't suffer from a lot of vibration either....
AnswerID: 488618

Reply By: PradOz - Saturday, Jun 16, 2012 at 18:20

Saturday, Jun 16, 2012 at 18:20
I followed an idea from pradopoint where I bought some heatshrink from Jaycar, cut it to length of the spring base. First I wrapped the spring with tape then fitted the heat shrink over the top of that. It looks really good and minimised excessive wobble on the aerial. The spring base can still bend if need be but its stiffened up. I even have a flag on the top of the aerial that used to bend the aerial right back when hitting highway speeds but now its all good! A cheap effective fix, good luck with it.
AnswerID: 488643

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