Nex G & UHF Aerials
Submitted: Thursday, Sep 20, 2007 at 09:16
ThreadID:
49874
Views:
3079
Replies:
5
FollowUps:
4
This Thread has been Archived
Member - Big Mke (QLD)
Hi, Am wanting to stick a broomstick Nex G aerial on my Bullbar besides my UHF aerial. Are either going to interfere with each others reception. Thanks in Advance
Reply By: Kev M (QLD Bound) - Thursday, Sep 20, 2007 at 09:20
Thursday, Sep 20, 2007 at 09:20
Mike,
I have a broomstick CDMA aerial next to the uhf aerial on the bull bar with no interference so I wouldn't think it would effect a Next G one
Kev
| Russell Coight:
He was presented with a difficult decision: push on into the stretching deserts, or return home to his wife.Lifetime Member
My Profile My Blog Send Message |
AnswerID:
263103
Reply By: Nick R (VIC) - Thursday, Sep 20, 2007 at 09:49
Thursday, Sep 20, 2007 at 09:49
I have the same setup, maybe it has a positive effect as my nextG works
well in many
places. I haven't had the negative experience with nextG that many people have had......
I have seen many vehicles with the broomstick a few inches from the uhf.
NickR
AnswerID:
263110
Follow Up By: disco1942 - Thursday, Sep 20, 2007 at 12:53
Thursday, Sep 20, 2007 at 12:53
Nick
No matter how you mount them they will all work in favourable circumstances. If you did not want to compromise your antenna performance you would mount only one antenna in the middle of your vehicles turret. The big problem is that we have make compromises to install our antennas easily.
PeterD
FollowupID:
524717
Reply By: Member - Doug T (Qld) - Thursday, Sep 20, 2007 at 10:34
Thursday, Sep 20, 2007 at 10:34
Don't mount the UHF antenna along side any metal object - As far away as possible
Any metal object will absorb the radiation from the antenna, greatly reducing its performance, you need at least 700mm from a wall or from another antenna for 477MHz antennas, if this is not possible then mount the antenna as far away from any other antenna or metal object as possible.
AnswerID:
263118
Follow Up By: disco1942 - Thursday, Sep 20, 2007 at 12:45
Thursday, Sep 20, 2007 at 12:45
What Doug has said is correct. His mention of 700 mm is slightly over 1 wavelength at the CB frequencies. The rule of thumb is to try to separate collinear antennas such as these by more than a wavelength calculated from the lower frequency. The big problem is we often have to compromise with our installations and you may have to space them closer together to be able to physically mount them. If we did not wish to have to compromise we would all be mounting our antennas up on the turret and not on the bull bars.
PeterD
FollowupID:
524713
Follow Up By: Member - Doug T (Qld) - Thursday, Sep 20, 2007 at 13:02
Thursday, Sep 20, 2007 at 13:02
Peter
That comment was copied and pasted , I do know that fact but is quicker to copy,
Having said that My sister had a bloody Cat called PeterD in the 1960s It was named after Peter Darley , Now all you older South Aussies will know of him
.
.
FollowupID:
524719
Follow Up By: Sand Man (SA) - Friday, Sep 21, 2007 at 01:41
Friday, Sep 21, 2007 at 01:41
A very good footballer was Peter Darley.
He just played for the wrong Club:-))
Gee, am I showing my age???
FollowupID:
524845
Reply By: Philip A - Thursday, Sep 20, 2007 at 20:01
Thursday, Sep 20, 2007 at 20:01
When I spoke to the designer of the Mobile1 CDMA nee Next G antenna, and asked him the question, He told me to put the UHF and CDMA antennas no closer than about 12 inches, but preferably 20 inches.
Regards Philip A
AnswerID:
263218
Reply By: keepingitreal - Saturday, Sep 22, 2007 at 13:40
Saturday, Sep 22, 2007 at 13:40
I have 3 aerials on my vehicle, and on advice was told not to put any 2 near each other. Hence have 1 on bullbar and 1 on each sid of bonnet. They don't seem to interfere this way. Use my old CDMA one for NextG and works fine.
Regards
Keepingitreal (NSW)
AnswerID:
263441