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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)
 
#511 | 
			 
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		jesse(at)saintaviation.co Guest
 
 
 
 
 
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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
  | 	   
  
  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]       
        
        
        
        
        
        
        
        
        
        
       | 	       
      
      
      
      
      
    
 Checked by AVG - www.avg.com 
 
    | 	   [b]
 
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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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		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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