UHF aerial placement near AM aerial?

Submitted: Monday, Feb 14, 2005 at 13:44
ThreadID: 20426 Views:1728 Replies:7 FollowUps:2
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Greetings,

Got the GME TX4400 coming in tomorrow. Just wondering how far apart it should be from the AM cb aerial? If I place it around 300mm away will that be ok? They are different frequencies so they might not affect each other? Any suggestions?

(The ARB dual battery system went into the 80LSC on the weekend no problems, about 3hrs of work - bewdy!!)

Oh and only 16 days left till Flinders trip!!!

Thanks in advance - Marko
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Reply By: signman - Monday, Feb 14, 2005 at 14:40

Monday, Feb 14, 2005 at 14:40
Hi Marko,

I would prefer to see separation of at least 1/4 wavelength of the highest frequency ie. the UHF. That is about 600mm.
Have a good time in the Flinders- and a must do is some of the Gorge drives.

See ya
Signman
AnswerID: 98299

Reply By: Truckster (Vic) - Monday, Feb 14, 2005 at 14:43

Monday, Feb 14, 2005 at 14:43
When I had 27meg adn UHF issues in mine, I went to Telstat.
They informed me that you SHOULDNT have them close.. I now run 1 on each side of the bullbar.. No issues anymore.
AnswerID: 98300

Reply By: Marko - Monday, Feb 14, 2005 at 15:22

Monday, Feb 14, 2005 at 15:22
Thanks boyz... you've answered my question.

(doh now i have to move the AM aerial... oh well)

Cheers - Marko
AnswerID: 98305

Reply By: Savvas - Monday, Feb 14, 2005 at 16:57

Monday, Feb 14, 2005 at 16:57
Is it really a problem if you do not transmit on both simultaneously?
AnswerID: 98322

Follow Up By: Marko - Tuesday, Feb 15, 2005 at 09:00

Tuesday, Feb 15, 2005 at 09:00
This is a fair enough question. Can anyone help?
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FollowupID: 356897

Follow Up By: Savvas - Wednesday, Feb 16, 2005 at 08:48

Wednesday, Feb 16, 2005 at 08:48
Marko, I reckon Geoff and Rod have answered that one below.

Doesn't seem to be an issue.
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FollowupID: 357023

Reply By: Geoff from OutbackStuff - Tuesday, Feb 15, 2005 at 00:00

Tuesday, Feb 15, 2005 at 00:00
It shouldn't be a problem as long as you dont transmitt both at once. You could look at a dual arial as per Unidens dual frequency Arial.

Geoff
www.outbackstuff.com.au
AnswerID: 98406

Reply By: Rod W - Tuesday, Feb 15, 2005 at 10:50

Tuesday, Feb 15, 2005 at 10:50
Got mine sitting side by side (100mm) hasn't been a problem.
AnswerID: 98454

Reply By: Marko - Wednesday, Feb 16, 2005 at 08:53

Wednesday, Feb 16, 2005 at 08:53
All done. Installed last night, only about 200mm apart. No problems, works fine.

Thanks for all the input.

Marko
AnswerID: 98622

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