CB antenna question
Submitted: Tuesday, Apr 18, 2006 at 23:26
ThreadID:
33023
Views:
1683
Replies:
3
FollowUps:
4
This Thread has been Archived
Trevor M (SA)
Just received a Uniden UH-090 I purchased on ebay. I know 27 Meg is almost a think of the past but since this radio will do both FM and AM CB I figure I may as
well try to make use of it.
It would appear that 2 antenna are required (1 for each band) and my question is whether there are any issues having them located close together?
I know most of the traffic is now on UHF. I assume there is no way around the 2 antenna issue?
Sorry if I appear to know little......it's probably because that is the case
Thanks in advance
Trevor
Reply By: Richard Kovac - Wednesday, Apr 19, 2006 at 00:23
Reply By: GaryInOz (Vic) - Wednesday, Apr 19, 2006 at 00:30
Wednesday, Apr 19, 2006 at 00:30
Usually like about 1 metre between them if you can, but generally as far apart as possible (opposite ends of the bullbar?)
AnswerID:
167709
Reply By: Dave_01 - Wednesday, Apr 19, 2006 at 06:46
Wednesday, Apr 19, 2006 at 06:46
Make sure you tune your antennas (the correct length) or they will not perform as good.
Dave.
AnswerID:
167717
Follow Up By: Jo and Mark - Wednesday, Apr 19, 2006 at 07:23
Wednesday, Apr 19, 2006 at 07:23
We just bought a UHF set up on the weekend and a new antenna. How do you tune them?
FollowupID:
422938
Follow Up By: Russel & Mary - Wednesday, Apr 19, 2006 at 07:49
Wednesday, Apr 19, 2006 at 07:49
you don't need to tune UHF, the coax and aerial is already the right length. The old 27meg radios had to be tuned by using a SWR meter and carefully cutting a bit off the aerial at a time until it was just right. I can't remember what SWR stood for, sine wave reflected or something. Rus.
FollowupID:
422945
Follow Up By: Jo and Mark - Wednesday, Apr 19, 2006 at 08:03
Wednesday, Apr 19, 2006 at 08:03
Thanks Russel.
I didn't think it was necessary, but better to ask if not sure hey!
FollowupID:
422948
Follow Up By: Member - Loco Locums - Wednesday, Apr 19, 2006 at 08:09
Wednesday, Apr 19, 2006 at 08:09
SWR is Standing Wave Ratio...which came from the full term VSWR Voltage Standin Wave Ratio.
The Helical whip type antennas are usually manufactured with a little extra length on top so thay can be clipped in conjunction with reading from a SWR meter in line.
Stainless Steel antennas for 27 motorcycles are usually adjustable via a grub screw for length...however the GME base loaded stainless antenna is pretuned.
If in doubt seek professional help. We're currently in Rockahmpton for the next week if you're close by...
Hope this helps
Cheers
Rick & Julie
FollowupID:
422950