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Car Forum / Jeep / March 2008

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2m/440 antenna recommendations for 08 KJ

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Eric - 12 Mar 2008 03:25 GMT
Been out of touch with the latest and greatest in amateur radio gear.
So, looking for any first hand recommendations on antenna/mount
combo's for a KJ that I'm picking up this week. If I remember rite,
best spot to mount is above the tire carrier.

Eric/N2JHJ

92XJ, 97XJ, 02KJ, and now a 08JK
PeterD - 12 Mar 2008 14:02 GMT
>Been out of touch with the latest and greatest in amateur radio gear.
>So, looking for any first hand recommendations on antenna/mount
[quoted text clipped - 4 lines]
>
>92XJ, 97XJ, 02KJ, and now a 08JK

Define 'Best'... <g>

Center of the roof for best performance (good ground plane). However
that is not an easy location to mount to!
Eric - 12 Mar 2008 22:33 GMT
>>Been out of touch with the latest and greatest in amateur radio gear.
>>So, looking for any first hand recommendations on antenna/mount
[quoted text clipped - 9 lines]
>Center of the roof for best performance (good ground plane). However
>that is not an easy location to mount to!

Center of the roof would be best if it was metal, and permanent.
Unfortunately the roof of the 08JK is neither. Thus the reason I
mentioned the spare tire carrier as I remember this being mentioned in
past postings as being the "best" spot. The reason given was it's away
from the engine, and it's out of the way if you  switch from hard top
to soft top, to no top. I guess what I'm really looking for is to see
if this is still the case, or has someone come up with a better place
to mount the antenna.

Eric/N2JHJ
PeterD - 12 Mar 2008 23:56 GMT
>>>Been out of touch with the latest and greatest in amateur radio gear.
>>>So, looking for any first hand recommendations on antenna/mount
[quoted text clipped - 12 lines]
>Center of the roof would be best if it was metal, and permanent.
>Unfortunately the roof of the 08JK is neither.

Oops! <g>

> Thus the reason I
>mentioned the spare tire carrier as I remember this being mentioned in
[quoted text clipped - 5 lines]
>
>Eric/N2JHJ

Q: Are you looking for maximum performance, or just a good location?
I'm not sure the front is that bad a location, noise wise, though it
may not be any better than the spare carrier either. (I can just see
it mounted in the center of the hood!) <g>
Eric - 13 Mar 2008 10:58 GMT
>>>>Been out of touch with the latest and greatest in amateur radio gear.
>>>>So, looking for any first hand recommendations on antenna/mount
[quoted text clipped - 29 lines]
>may not be any better than the spare carrier either. (I can just see
>it mounted in the center of the hood!) <g>

A. Don't know. In the front you have to deal with engine noise, the
back, you may/maynot have to deal with the fuel pump. I doubt the
latter is a problem as I haven't had any grief from the fuel pumps on
either of my XJ's...but that is assuming Jeep uses the same pump for
all/most of their vehicles.
I also remember someone mentioning using the existing 3rd brake light
mount, but not sure if it was a home made mounting bracket, or one you
could purchase say from a 3rd party vendor,or a  ham radio store.
I pick up the JK tonight, and with more snow in the forecast, it will
be a few days before I can get the rig out of my 97XJ, so I guess I'll
have to use my friend Google! :)
Thanks

Eric/N2JHJ
PeterD - 13 Mar 2008 14:21 GMT
>A. Don't know. In the front you have to deal with engine noise, the
>back,

I still think you are excessively worried about 'engine' noise. I'd
try it first before deciding that if I wanted a front mount. (but I
suspect you don't!)

>you may/maynot have to deal with the fuel pump.

I was going to come back with "a metal fuel tank won't let that
happen" then I thought about it. I'll just say that if that is a
problem, I bet there are other issues nearby that will also be a
problem. I think the fuel pump shoud be well shielded even in a
plastic fuel tank.

>I doubt the
>latter is a problem as I haven't had any grief from the fuel pumps on
>either of my XJ's...but that is assuming Jeep uses the same pump for
>all/most of their vehicles.

I'm sure they are similar, a DC motor, brushes probably.

> I also remember someone mentioning using the existing 3rd brake light
>mount, but not sure if it was a home made mounting bracket, or one you

I'd guess home made, but maybe I'm wrong. I could see a generic one
that mounted on the bolts/studs that hold a spare tire.

>could purchase say from a 3rd party vendor,or a  ham radio store.
> I pick up the JK tonight, and with more snow in the forecast, it will
[quoted text clipped - 3 lines]
>
>Eric/N2JHJ

Good luck, let us know how it worked out.
Garth Almgren - 13 Mar 2008 19:36 GMT
> > I also remember someone mentioning using the existing 3rd brake light
> >mount, but not sure if it was a home made mounting bracket, or one you
[quoted text clipped - 11 lines]
>
> Good luck, let us know how it worked out.

Eric, you could try one of these:
http://www.arizonarockyroad.com/antennamounts.html

Mounts to the spare tire bracket bolts. I've got one on my YJ for my
CB antenna.

--
~/Garth - 1993 Wrangler S 2.5
   { }|||||||{ } "MukYJ"
Eric - 13 Mar 2008 22:05 GMT
>> > I also remember someone mentioning using the existing 3rd brake light
>> >mount, but not sure if it was a home made mounting bracket, or one you
[quoted text clipped - 17 lines]
>Mounts to the spare tire bracket bolts. I've got one on my YJ for my
>CB antenna.

Thanks for the info Garth. Will check it out, and see if this is what
will fit the bill.

Thanks,
Eric/N2JHJ
Eric - 13 Mar 2008 22:04 GMT
>>A. Don't know. In the front you have to deal with engine noise, the
>>back,
[quoted text clipped - 33 lines]
>
>Good luck, let us know how it worked out.

Pete,
I had a brain fart. I'm used to the gas tank of the wranglers being
in the back behind the rear axle. Don't know when they changed over,
but (I even looked under to verify) the gas tank on the Wranglers is
now between the axles, passenger side, and inside the frame. So, the
"fuel pump" issue if there is one, has moved forward.
We still have a bit of snow on the ground, and the temps have still
averaged at or below freezing, so the nice day when I can park it on
the lawn, and install the rig is a few weeks away. This gives me time
to search, and check out other suggestions/replies.
Will do on keeping all informed. Thanks.

V/R,
Eric/N2JHJ
L.W.(ßill)Hughes III - 13 Mar 2008 21:47 GMT
Remember just a Citizen Band can whip out your car's computer, throwing
it into the safe mode, if the antenna is located within a couple of feet:
http://service.gm.com/techlineinfo/radio.html
       God Bless America, Bill O|||||||O
       mailto:BillHughes@billhughes.com
 http://www.billhughes.com/jeep_bookmark.htm

> >>>Been out of touch with the latest and greatest in amateur radio gear.
> >>>So, looking for any first hand recommendations on antenna/mount
[quoted text clipped - 29 lines]
> may not be any better than the spare carrier either. (I can just see
> it mounted in the center of the hood!) <g>

Signature

Posted via a free Usenet account from http://www.teranews.com

Terry Dactille ©~® - 14 Mar 2008 10:57 GMT
On Thu, 13 Mar 2008 12:47:13 -0800, "L.W.\(ßill\)Hughes III"
<BillHughes@billhughes.com> wrote:

>    Remember just a Citizen Band can whip out your car's computer, throwing
>it into the safe mode, if the antenna is located within a couple of feet:
>http://service.gm.com/techlineinfo/radio.html
>        God Bless America, Bill O|||||||O
>        mailto:BillHughes@billhughes.com
>  http://www.billhughes.com/jeep_bookmark.htm

Filling people with hot sh.t again I see!

--

“A winner makes commitment. A loser makes promises.”

“The path of least resistance is the path of the loser.”
Scott in Baltimore - 16 Mar 2008 05:48 GMT
>>    Remember just a Citizen Band can whip out your car's computer, throwing
>> it into the safe mode, if the antenna is located within a couple of feet:
>> http://service.gm.com/techlineinfo/radio.html

> Filling people with hot sh.t again I see!

I agree. I ran 900 watts out and the computer was/is fine.
My pulse-type current draw on sideband worried me. The headlights
would dim and spike really bright. I was afraid those voltage
peaks would wipe out my computer. I dropped back to a 2 pill
box and got out just as far. I haven't killed my computer yet
with bad SWR on any HF ham band, or 50 watts on VHF or 35 on UHF.

'97 TJ SE
 
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