uhf aerial tuning

Submitted: Tuesday, May 13, 2008 at 19:17
ThreadID: 57578 Views:2046 Replies:4 FollowUps:4
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hi all i have an omdi hand held uhf , i have just put a 6.5db aerial on my pajero . the question is will i have to get it tuned in ? cheers
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Reply By: Member - Stephen L (SA) - Tuesday, May 13, 2008 at 19:24

Tuesday, May 13, 2008 at 19:24
Hi zacc
UHF aerials are not designed to be tunes like the old AM sets, where you would have to SWR the antenna to the set.

Cheers

Stephen
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Follow Up By: zacc - Tuesday, May 13, 2008 at 19:35

Tuesday, May 13, 2008 at 19:35
cheers thanx for that stephen
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Reply By: Member - SNAKE QLD - Tuesday, May 13, 2008 at 20:36

Tuesday, May 13, 2008 at 20:36
Hi Zacc, Contrary to what some may say it is adviseable to have someone run a VSWR meter over your antenna as the tuning will vary depending on location on the vehicle,nearby antennas and other objects in the general area of the antenna.Because most UHF CBs only put out 5watts you need to insure all is as good as you can make it,this includes a good earth.Cheers.Snake and Josie
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Reply By: Member - Bucky (VIC) - Wednesday, May 14, 2008 at 05:36

Wednesday, May 14, 2008 at 05:36
No need to SWR it in ( or what ever they do to UHF sets ) ...

The main thing to do is to make sure that the base of the aerial has a good earth.

Cheers
Bucky
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Follow Up By: Member - SNAKE QLD - Wednesday, May 14, 2008 at 20:54

Wednesday, May 14, 2008 at 20:54
No need to SWR it in Why??
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Follow Up By: obee - Thursday, May 15, 2008 at 09:32

Thursday, May 15, 2008 at 09:32
I would have to assume that any difference on a bought uhf aerial that could be tuned out would would make only a marginal difference to the signal over the short distance a uhf reaches. I wonder how many people here have checked their swr anyway.
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Follow Up By: Member - Bucky (VIC) - Thursday, May 15, 2008 at 11:28

Thursday, May 15, 2008 at 11:28
Good point obee !

Where are all the experts ??

As far as I know, ( to be corrected ! ) "all" UHF aerials are tuned !

But "all" in a big word,,!.

Cheers
Bucky

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Reply By: Robin Miller - Thursday, May 15, 2008 at 11:41

Thursday, May 15, 2008 at 11:41
Hi Zac

UHF aerials come in two types - ground independant and ones that are earthed.

The ground independant ones should require no tuning - and the other sort may require tuning depending on your mounting but usually require none.

So which antenna type did you get ?




Robin Miller

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