advice needed

4x4 CB radio advice and troubleshooting

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bango690
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Mon Oct 01, 2007 6:54 pm

i have a land rover 90 hard top, i have mounded the Aerial on the rear gutter and havee been told that i need to have a wire going from the Aerial to the chassis. i am using a orbitor Aerial with a sumeet gt-858b rig
if this is ture where would i fix the wire on the end of the Aerial (stupid question i no)
many thanks!

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stampman
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Mon Oct 01, 2007 10:38 pm

no if you are useing a gutter mount then the antenna will swr and perform ok

have fitted a few for green laneing and they seem to do the job



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jefarmstrng
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Sun Apr 27, 2008 10:24 pm

hi i have the same trouble i have a new cb midland ,,, and new twig and cable but i mounted it on front wing i don't think its earthed . if i fit it to a gutter mount do i not have to earth it?
cheers

hotmetal1000
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Mon Apr 28, 2008 12:40 am

It should earth threw the gutter mount. If the cb works ok and swr is ok I wouldn't be to worried about it.

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stampman
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Mon Apr 28, 2008 8:53 am

yes it will swr ok on the gutter be sure to use the meter when you set it up



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jdo330
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Tue Apr 29, 2008 9:26 pm

A friend of mine has a LR 90 van style (im sure its called something else other than "van style") and he had SWR problems using an Orbitor on a gutter mount. In the end he mounted an "L" shaped bracket on the back of the vehicle up high (small panel on the nearside top corner at the rear) but he didnt expose the antenna coil fully just to give it a bit of protection. Checked the SWR and still a bit high so he did as you have been recommended and ran an earth wire to the chassis (he earthed from one of the two bolts that holds his "L" shaped bracket on from inside the vehicle). This got his SWR down to 2 on the UK 40 which is tollerable but still not perfect.

I hope this helps.

ATB, Jon.

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stampman
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Wed Apr 30, 2008 2:44 pm

the antenna picks up reflection from the van body so if he can't raise it higher the he will have to live with the higher swr



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jdo330
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Wed Apr 30, 2008 6:21 pm

Hiya Stampman,

I told him that but he would rather protect the base of the antenna so he is going to stay as he is. He only uses it for laning etc so its generally only short range comms anyway.

ATB, Jon.

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stampman
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Thu May 01, 2008 8:29 am

ok but he will have to live withe the swr reading then


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