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Author Topic: dual antenna same or diff?  (Read 853 times)
N8EMR
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Posts: 246




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« on: October 16, 2007, 12:48:42 PM »

I am trying to figure out how to best outfit my new truck. For HF I will have an Icom 706  and put in a new dual band for v/uhf.  Antennas woudl be 2 NMO mounted antennas on the roof spaced (L_R)  as far apart as I can get them. The sunroof stops front to back mounting. The 706 only needs a  2m antenna. From a simple aesthetics standpoint I would like to have matching antennas.  What interactive would I have with two matching dual band antenna's vs one dual band and one single band mismatched antennas. What will the two antenna's do to directionality (matched or mismatched antennas) to  the signal?  Will it be noticeable enough to worry about?
Any other interactive issues? Since the 706 would rarely be used on 2m, but  may be used  when I need both vhf and UHF active at the same time.


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AA4PB
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Posts: 14354




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« Reply #1 on: October 16, 2007, 06:35:42 PM »

The worst case will be the VHF where the wavelength is longer. Separate them as far as possible. If you can keep at least 2-3 feet you should be okay with not too much interaction.

It won't matter any if both antennas are of the same type (VHF/UHF).
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Bob  AA4PB
Garrisonville, VA
K0BG
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Posts: 10248


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« Reply #2 on: October 16, 2007, 07:03:41 PM »

Visit my web site, and look around.

Alan, KØBG
www.k0bg.com
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