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12-09-2009, 11:25 AM
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Join Date: Mar 2007
Location: McKinney, TX
Posts: 1,261
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Comant Instructions
I have two CI-122 VHF and a CI-105 Xpder antennas. I bought them back in the spring but did not open them. I did today to find no paperwork with installations instructions, specifics on distances apart etc. There is not hard ware either, just the antenna and the gasket, no backing plate nut or screws. Should I have mounting hardware and backing plates in these boxes? As for the instructions I am all for saving paper but a note with a web address to the information would be great. I tried www.COMANT.com but it redirect to a Chelton website and I can't seem to find a downloads section for antennas. I might be a little web challenged. With Google I did find a file for General Instructions for COMANT antennas but no specific instructions for individual models.
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Mike "Nemo" Elliott
RV-8A (First Flight 12-12-12!)
KOCF
N800ME
www.mykitlog.com/rvg8tor
Dues Paid 2019
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12-09-2009, 11:39 AM
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Join Date: Sep 2007
Location: WA
Posts: 988
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this is the exact reason i went with rami antennas
irritating that comant appears to be resting on reputation... from all accounts the rami units are equal, cost less, come with backing plates, have drawings, and a working website.
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Stephen
RV7 powered by a lycoming thunderbolt IO-390
turning a whirlwind HRT prop
with more hours flying than building... 2,430 on the hobbs!
ORCA Flight
Race 771
margarita!
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12-09-2009, 12:57 PM
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Join Date: Dec 2007
Location: Flagstaff, AZ
Posts: 2,647
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They don't include hardware because they have no idea what your application will be. I installed my top antenna per the advisory circular with a doubler under the skin, nutplates, and screws of proper length for my installation.
I don't recall getting instructions with my antennae either, but I don't think a backing plate is enough in most cases IMHO.
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Patrick Kelley - Flagstaff, AZ
RV-6A N156PK - Flying too much to paint
RV-10 14MX(reserved) - Fuselage on gear
http://www.mykitlog.com/flion/
EAA Technical Counselor #5357
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12-09-2009, 01:13 PM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
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Do yourself a big favor up front and ditch the gasket and go metal to metal. Your radio will love you for it! 
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Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
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12-09-2009, 02:55 PM
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Join Date: Jan 2005
Location: Shorewood, WI (Milwaukee area)
Posts: 1,066
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antennae
I have 'em too. Anybody have info on backing plate dimensions and thickness?
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Bill Dicus
Shorewood (Milwaukee) Wisconsin
RV-8 N9669D Flying 12/4/14!
Flying Pitts S-2A, Piper Lance
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12-09-2009, 04:52 PM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
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On the RV7...
If you're mounting the antenna on the floor pan, no backing plate is needed.
Quote:
Originally Posted by Bill Dicus
I have 'em too. Anybody have info on backing plate dimensions and thickness?
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Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
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12-10-2009, 04:41 PM
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Join Date: Jan 2005
Location: Shorewood, WI (Milwaukee area)
Posts: 1,066
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antennae
Thanks Reily. Bill
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Bill Dicus
Shorewood (Milwaukee) Wisconsin
RV-8 N9669D Flying 12/4/14!
Flying Pitts S-2A, Piper Lance
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12-10-2009, 09:29 PM
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Join Date: Feb 2006
Location: San Diego, CA, U.S.A.
Posts: 770
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Quote:
Originally Posted by LifeofReiley
If you're mounting the antenna on the floor pan, no backing plate is needed.
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Can you please elaborate? How did you arrive at that determination? |
12-10-2009, 09:47 PM
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Join Date: Nov 2006
Location: Waco, Texas
Posts: 1,658
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I've been looking for a template for these holes too... Can't seem to find one anywhere.
I've pretty much decided that I need to go ahead and buy myself an antenna at this point. Gonna need it anyway.  |
12-11-2009, 06:50 AM
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Join Date: Jan 2007
Location: CLINTON,NC
Posts: 109
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Mike,
There is a picture on my web site of the backing plate I fabricated out of .032
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