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Old 02-07-2012, 07:15 PM   #1
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CB antenna postion

I installed a cobra 29 ltd classic today with a magnetic mount k40 if i install the antenna to the rear of the jeep my swr is 5 to 10 stuck it on the front fender the swr is 1 to 1.5. Can anyone tell me why the reading is better on the front bumper.

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Old 02-07-2012, 07:23 PM   #2
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To the rear of the jeep? if you mean off of the rear bumper then you have the tub right up next to the antenna mast, on the front fender you won't have any thing next to the mast so it should match better. Although 5-10 sounds more serious than just the tub in close proximity of the antenna mast.

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Old 02-07-2012, 07:36 PM   #3
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Apparently the rear bumper has horrible ground
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Old 02-07-2012, 07:38 PM   #4
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I had it on the tailgate gaurd on the passenger side not really to close to the tub, on the front my swr is good so i dont think any issues with the radio.
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Old 02-07-2012, 07:39 PM   #5
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Apparently the rear bumper has horrible ground
its a magnetic mount and had it on the tailgate gaurd.
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Old 02-07-2012, 07:59 PM   #6
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Quote:
Originally Posted by phatkat

its a magnetic mount and had it on the tailgate gaurd.
What do you mean tail gate guard?
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Old 02-07-2012, 08:07 PM   #7
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I had it on the tailgate gaurd.
Huh!!!!!!!
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Old 02-07-2012, 09:02 PM   #8
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tailgate gaurd is what stops the tailgate and spare tire swinging to hard and breaking the hinges its mounted beside the passengers tail light maybe its called something else.
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Old 02-08-2012, 11:56 AM   #9
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Thats a cj thing, YJ's and TJ's never came with those, the stop is built into the hinge.

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Old 02-08-2012, 05:20 PM   #10
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ID:	95927 OK so this is what im calling a tailgate gaurd its beside the tailight it mite be called something else. I had the antenna sitting on this but had to move it to the crowl on the hood
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Old 02-08-2012, 05:21 PM   #11
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Thats a cj thing, YJ's and TJ's never came with those, the stop is built into the hinge.

Donn
they come on YJ's too
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Old 02-08-2012, 07:09 PM   #12
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they come on YJ's too
My 88 Yj had the stop built into the tailgate hinge and didn't need one but older ones maybe different.

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Old 02-08-2012, 09:36 PM   #13
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My 88 Yj had the stop built into the tailgate hinge and didn't need one but older ones maybe different.

Donn
mine is a 88 dont know why some had them and some dont
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Old 02-09-2012, 12:20 PM   #14
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Does not matter what it's called, it's a horrible ground for a mag--mount antenna. They want a good flat piece of steel under them to work properly. They get their RF ground through a capacitive coupling in the magnet housing.
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Old 02-09-2012, 12:57 PM   #15
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antennae

are u using a hand held (in line seperate from the radio) swr meter, the built into the radio ones are never accurate. if you are topless there is always the roll bar. ok so does the antennae have a stinger that allows you to lengthen or shorten antennae length. (best swr match) how long is your cable and what rgu? you can go bigger like rg8, (j/k it's huge) you can lengthen shorten the cable, and run the cable in straight lines not all looped up. I've never been a fan of magna-toppers. I suggest a quick release mount attached to any length whip located at the rear of the vehicle. (military spec style) a spring is not necessary unless you go with one of those 108" jobbies.. 2:1 is very high and not acceptable in my world. good luck.

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