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Mike Whisky
Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
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 Posted: Tue Mar 10, 2009 2:02 am Post subject: Top COMM antenna |
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Hi guys,
I want to mount a com antenna on top.
The tape comm antenna I understand is not an option for the -10.
Now COMMANT has a veriation of models:
Which one can you suggest?
http://www.comant.com/showproduct.aspx?CN=44&SCN=59
Looking forward for your thoughts.
Cheers
Michael
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RV-10 builder (flying)
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jesse(at)saintaviation.co
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| Posted: Tue Mar 10, 2009 3:16 am Post subject: Top COMM antenna |
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The bent whip (either the CI-121 or CI-122, IIRC) is what I would
recommend for low drag and good price.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
On Mar 10, 2009, at 6:02 AM, Michael Wellenzohn wrote:
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LarryRosen
Joined: 16 Jan 2006
Posts: 415
Location: Medford, NJ
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| Posted: Tue Mar 10, 2009 5:11 am Post subject: Top COMM antenna |
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For a top mount consider the Comant CI-121 or the RA Miler AV-10. The
Comant CI-122 is for a belly mount com.
Larry Rosen
Jesse Saint wrote:
| Quote: |
The bent whip (either the CI-121 or CI-122, IIRC) is what I would
recommend for low drag and good price.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
On Mar 10, 2009, at 6:02 AM, Michael Wellenzohn wrote:
>
> <rv-10(at)wellenzohn.net>
>
> Hi guys,
>
> I want to mount a com antenna on top.
> The tape comm antenna I understand is not an option for the -10.
>
> Now COMMANT has a veriation of models:
> Which one can you suggest?
>
> http://www.comant.com/showproduct.aspx?CN=44&SCN=59
>
> Looking forward for your thoughts.
>
> Cheers
> Michael
>
> --------
> RV-10 builder (engine, prop, finishing)
> #511
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 34006#234006
>
>
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_________________
Larry Rosen
#40356
N205EN (reserved)
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pitts_pilot(at)bellsouth.
Guest
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| Posted: Tue Mar 10, 2009 5:38 am Post subject: Top COMM antenna |
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It's true that the bent whip antenna was 'bent' for ground clearance when mounted on the belly ...... but it works just fine on the top too, for those that are squeezing the bank account.
Michael said:
| Quote: | --> RV10-List message posted by: "Michael Wellenzohn" <rv-10(at)wellenzohn.net>
Hi guys,
I want to mount a com antenna on top.
The tape comm antenna I understand is not an option for the -10.
I don't see why the problems with the tape antennas would be any different in the -10. The only problem I'm aware of is that the comm antennas are vertically polarized, and the signal strength suffers when they're horizontal. OK, we're not talking 1/2 way around the world here. I hear transmissions a couple hundred miles away (vertically polarized antennas)when I fly ...... but I'm usually within 10 miles of an airport when I check in ...... so I fail to see the 'problem' with the tape antennas laying horizontal other than the antenna 'pointing' at the destination. So, just place the antenna sideways ..... like across the cabin top or bend it like that 'belly' whip. Help me out here guys!!! What am I missing???
Linn
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Larry Rosen wrote: [quote]--> RV10-List message posted by: Larry Rosen <N205EN(at)gmail.com> (N205EN(at)gmail.com)
For a top mount consider the Comant CI-121 or the RA Miler AV-10. The Comant CI-122 is for a belly mount com.
Larry Rosen
Jesse Saint wrote:
| Quote: | --> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com> (jesse(at)saintaviation.com)
The bent whip (either the CI-121 or CI-122, IIRC) is what I would recommend for low drag and good price.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
Cell: 352-427-0285
Fax: 815-377-3694
On Mar 10, 2009, at 6:02 AM, Michael Wellenzohn wrote:
| Quote: | --> RV10-List message posted by: "Michael Wellenzohn" <rv-10(at)wellenzohn.net> (rv-10(at)wellenzohn.net)
Hi guys,
I want to mount a com antenna on top.
The tape comm antenna I understand is not an option for the -10.
Now COMMANT has a veriation of models:
Which one can you suggest?
http://www.comant.com/showproduct.aspx?CN=44&SCN=59
Looking forward for your thoughts.
Cheers
Michael
--------
RV-10 builder (engine, prop, finishing)
#511
Read this topic online here:
[url=http://forums.matronics.com/viewtopic.php?p 34006#234006]http://forums.matronics.com/viewtopic.php?p 34006#234006[/url]
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Checked by AVG - www.avg.com
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coop85(at)verizon.net
Guest
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| Posted: Tue Mar 10, 2009 1:06 pm Post subject: Top COMM antenna |
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Michael,
I wouldn't give up on the tape antenna just yet. I use one for my 2nd
comm radio and it works great. My bent whip on the bottom goes to the
primary radio, but I've had great luck with the tape and use it to talk to
ground control and Unicom radios without any issues. Plus it's the cheapest
game in town by a long shot. I ran the comm cord up the cabin support tube
and tie the shield to the mount screw and the center to the tape with one
piece of fiberglass to cover the tape and hold it in place.
Marcus
Just rolled over 400 hours.
Do not archive
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recapen(at)earthlink.net
Guest
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| Posted: Tue Mar 10, 2009 1:35 pm Post subject: Top COMM antenna |
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Marcus,
How long is your tape? I did mine according to the instructions and it
doesn't work well at all. I had a bunch of Ham radio guys come out and look
at it - they put a meter on it and told me it is electrically too short for
the frequencies I was trying to use.
Thanks,
Ralph
---
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Mike Whisky
Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
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| Posted: Tue Mar 10, 2009 2:18 pm Post subject: Re: Top COMM antenna |
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Marcus
Do you have any pictures?
Best Michael
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_________________
RV-10 builder (flying)
#511 |
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ScooterF15
Joined: 19 Jun 2006
Posts: 136
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| Posted: Tue Mar 10, 2009 2:54 pm Post subject: Top COMM antenna |
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Michael,
I glassed a VHF comm antenna into the cowling. It is oriented vertically and works great. More details and pictures from my previous post are located here: http://forums.matronics.com/viewtopic.php?t=6664
-Jim
N312JE
On Tue, Mar 10, 2009 at 5:02 AM, Michael Wellenzohn <rv-10(at)wellenzohn.net (rv-10(at)wellenzohn.net)> wrote:
[quote]--> RV10-List message posted by: "Michael Wellenzohn" <rv-10(at)wellenzohn.net (rv-10(at)wellenzohn.net)>
Hi guys,
I want to mount a com antenna on top.
The tape comm antenna I understand is not an option for the -10.
Now COMMANT has a veriation of models:
Which one can you suggest?
http://www.comant.com/showproduct.aspx?CN=44&SCN=59
Looking forward for your thoughts.
Cheers
Michael
--------
RV-10 builder (engine, prop, finishing)
#511
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=234006#234006
t Un/Subscription,
www.matronics.com/Navigator?RV10-List" target="_blank">http://www.matronics.com/Navigator?RV10-List
ronics.com/" target="_blank">http://forums.matronics.com
Matt Dralle, List Admin.
=====
[b]
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dlm46007(at)cox.net
Guest
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| Posted: Tue Mar 10, 2009 4:04 pm Post subject: Top COMM antenna |
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so you disconnect each time the cowl is removed?
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of James McGrew
Sent: Tuesday, March 10, 2009 3:54 PM
To: rv10-list(at)matronics.com
Subject: Re: Top COMM antenna
Michael,
I glassed a VHF comm antenna into the cowling. It is oriented vertically and works great. More details and pictures from my previous post are located here: http://forums.matronics.com/viewtopic.php?t=6664
-Jim
N312JE
On Tue, Mar 10, 2009 at 5:02 AM, Michael Wellenzohn <rv-10(at)wellenzohn.net (rv-10(at)wellenzohn.net)> wrote:
[quote]--> RV10-List message posted by: "Michael Wellenzohn" <rv-10(at)wellenzohn.net (rv-10(at)wellenzohn.net)>
Hi guys,
I want to mount a com antenna on top.
The tape comm antenna I understand is not an option for the -10.
Now COMMANT has a veriation of models:
Which one can you suggest?
http://www.comant.com/showproduct.aspx?CN=44&SCN=59
Looking forward for your thoughts.
Cheers
Michael
--------
RV-10 builder (engine, prop, finishing)
#511
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=234006#234006
t Un/Subscription,
www.matronics.com/Navigator?RV10-List" target="_blank">http://www.matronics.com/Navigator?RV10-List
ronics.com/" target="_blank">http://forums.matronics.com
Matt Dralle, List Admin.
=====
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
[b]
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ScooterF15
Joined: 19 Jun 2006
Posts: 136
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| Posted: Tue Mar 10, 2009 5:06 pm Post subject: Top COMM antenna |
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I said cowling... I meant cabin top. It is not removed quite as often as the cowling.
-Jim
N312JE
On Tue, Mar 10, 2009 at 6:58 PM, David McNeill <dlm46007(at)cox.net (dlm46007(at)cox.net)> wrote:
[quote] so you disconnect each time the cowl is removed?
From: owner-rv10-list-server(at)matronics.com (owner-rv10-list-server(at)matronics.com) [mailto:owner-rv10-list-server(at)matronics.com (owner-rv10-list-server(at)matronics.com)] On Behalf Of James McGrew
Sent: Tuesday, March 10, 2009 3:54 PM
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Subject: Re: Top COMM antenna
Michael,
I glassed a VHF comm antenna into the cowling. It is oriented vertically and works great. More details and pictures from my previous post are located here: http://forums.matronics.com/viewtopic.php?t=6664
-Jim
N312JE
On Tue, Mar 10, 2009 at 5:02 AM, Michael Wellenzohn <rv-10(at)wellenzohn.net (rv-10(at)wellenzohn.net)> wrote:
[b]
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coop85(at)verizon.net
Guest
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| Posted: Wed Mar 11, 2009 7:01 pm Post subject: Top COMM antenna |
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I honestly don't recall the length, but I ordered the "low drag" antenna for
$7 from Vans (Bob Archer???). I followed the directions closely so it is
whatever was specified. Best bang for the buck I've ever achieved with
avionics!
I've attached some pictures, there's not too much to it.
Marcus
40286
Do not archive
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| Description: |
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8829 Time(s) |
![DSC01207_[Desktop_Resolution].JPG](files/DSC01207__Desktop_Resolution__229.jpg)
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Mike Whisky
Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
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| Posted: Thu Mar 12, 2009 2:36 am Post subject: Re: Top COMM antenna |
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Marcus,
based on what I know and what was also mentioned before the com antenna needs to be as much vertical as possible. So how does your installation on the cabin ceiling work then?
Michael
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_________________
RV-10 builder (flying)
#511 |
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dlm46007(at)cox.net
Guest
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| Posted: Thu Mar 12, 2009 4:43 am Post subject: Top COMM antenna |
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Another consideration is the radiation from the antenna. IIRC correctly the
intensity varies inversely with the square of the distance between the pilot
and the source.
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billderou(at)yahoo.com
Guest
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| Posted: Thu Mar 12, 2009 10:08 am Post subject: Top COMM antenna |
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Does anyone have VSWR values for the do it yourself COM antennas? if you are near Prescott stop-bye and I'll measure it for you.
Bill DeRouchey
N939SB, flying
--- On Thu, 3/12/09, David McNeill <dlm46007(at)cox.net> wrote:
[quote]From: David McNeill <dlm46007(at)cox.net>
Subject: RE: Re: Top COMM antenna
To: rv10-list(at)matronics.com
Date: Thursday, March 12, 2009, 5:41 AM
[quote]--> RV10-List message posted by: "David McNeill" <dlm46007(at)cox.net> Another consideration is the radiation from the antenna. IIRC correctly the intensity varies inversely with the square of the distance between the pilot and the source. --
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coop85(at)verizon.net
Guest
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| Posted: Sat Mar 14, 2009 7:45 am Post subject: Top COMM antenna |
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Unfortunately I cannot speak to the technical questions that have been
raised, and are pretty good actually. However, I can attest that it works
great and I haven't had any issues. My thought process was to give it a
try, the price is negligible and I figured if it worked great, if not then
you can't see it under the fabric on the cabin roof anyway so no real loss.
Marcus
Do not archive.
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