cb aireal 6db or 4.5db

Submitted: Tuesday, Feb 23, 2010 at 15:07
ThreadID: 76263 Views:3243 Replies:6 FollowUps:1
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hi all , can some one tell me what the difference between a 6db and 4.5 db aireal is ?

is there any performance difference?

cheers
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Reply By: Rockape - Tuesday, Feb 23, 2010 at 15:13

Tuesday, Feb 23, 2010 at 15:13
The more hills and hollows you use a smaller 4.5 db aerial, 6db for undulating country and 9db for flat country.

They each give off a different radiated signal that suits the different terrain.

Have a good one
AnswerID: 405591

Reply By: Mr Pointyhead - Tuesday, Feb 23, 2010 at 15:17

Tuesday, Feb 23, 2010 at 15:17
And don't forget to get a base-plane independent aerial if you want to mount it on your bullbar.

AnswerID: 405592

Reply By: Member - Kiwi Kia - Tuesday, Feb 23, 2010 at 16:43

Tuesday, Feb 23, 2010 at 16:43
In my opinion - negligible difference.

KK
AnswerID: 405602

Follow Up By: anglepole - Tuesday, Feb 23, 2010 at 18:31

Tuesday, Feb 23, 2010 at 18:31
I agree. Too many variables to make much difference in most cases.

A small roof gutter mounted aerial will work well.
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FollowupID: 675342

Reply By: MEMBER - Darian, SA - Tuesday, Feb 23, 2010 at 17:22

Tuesday, Feb 23, 2010 at 17:22
Have a look in the UHF antennas section at the GME Electrophone site - good explanation there with illustrations.
AnswerID: 405609

Reply By: Member - Mike DID - Tuesday, Feb 23, 2010 at 18:42

Tuesday, Feb 23, 2010 at 18:42
You'd have to do carefully controlled tests to detect a difference of 1.5dB.
AnswerID: 405618

Reply By: vk1dx - Tuesday, Feb 23, 2010 at 19:00

Tuesday, Feb 23, 2010 at 19:00
At last some good advice. I have been trying in other like threads to say that there are too many variables to make a difference. Well done guys. Get any one you are happy with. UHF is the wrong band but its the only one we have apart from 27Mhz that we can use freely.

Personally and its just a hunch based on 40 years with comms our family all got the most basic radio and a 9db antenna. Antenna on the left hand side of bullbar away from the drivers sight and on a spring mount. It works for us. If we cannot hear each other then we wait until they come within range. Or don't bother.

I talk to my wife then. Much more interesting than listening to me rubbish on about tyre pressures or what height the GPS shows.

Phil

AnswerID: 405621

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