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VOR/GS/LOC antenna mount

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Eric_Kallio

Joined: 29 Jan 2006
Posts: 149
Location: Baton Rouge, LA

Posted: Wed Nov 24, 2010 7:00 am Post subject: VOR/GS/LOC antenna mount

Getting ready to mount the cat whisker type LOC antenna as one of the ever shrinking list of things to finish before inspection. Because I didn't plan ahead when building the VS I am going to mount the antenna under the tail. Anyone have pics of how they did their mount. particularly what you did for a doubler and nutplates. No need to reinvent the wheel if there is already a good solution out there.



Eric Kallio

Tim Olson

Joined: 25 Jan 2007
Posts: 2882

Posted: Wed Nov 24, 2010 8:02 am Post subject: VOR/GS/LOC antenna mount

It's way easier than you'd think....just look down into

the tail from above by the HS, find a good spot

in the middle, and make a doubler that fits.  There

aren't that many locations down there where you can put it,

with seams and all, so the right spot will be obvious.

It'll be completely underneath the HS then, and

pretty well protected.



Tim Olson - RV-10 N104CD

do not archive

On 11/24/2010 9:00 AM, Eric_Kallio wrote:

 	  Quote: 	
		   



 Getting ready to mount the cat whisker type LOC antenna as one of the ever shrinking list of things to finish before inspection. Because I didn't plan ahead when building the VS I am going to mount the antenna under the tail. Anyone have pics of how they did their mount. particularly what you did for a doubler and nutplates. No need to reinvent the wheel if there is already a good solution out there.



 Eric Kallio





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=320801#320801

pitts_pilot(at)bellsouth.
Guest

Posted: Wed Nov 24, 2010 8:08 am Post subject: VOR/GS/LOC antenna mount

On 11/24/2010 10:16 AM, Tim Olson wrote:

 	  Quote: 	
		   



 It's way easier than you'd think....just look down into

 the tail from above by the HS, find a good spot

 in the middle, and make a doubler that fits.  There

 aren't that many locations down there where you can put it,

 with seams and all, so the right spot will be obvious.

 It'll be completely underneath the HS then, and

 pretty well protected.

And you don't care if the birds perch on it under there!!!!!
	


Linn

 	  Quote: 	
		  

 Tim Olson - RV-10 N104CD

 do not archive

 On 11/24/2010 9:00 AM, Eric_Kallio wrote:

> 

>

> Getting ready to mount the cat whisker type LOC antenna as one of the 

> ever shrinking list of things to finish before inspection. Because I 

> didn't plan ahead when building the VS I am going to mount the 

> antenna under the tail. Anyone have pics of how they did their mount. 

> particularly what you did for a doubler and nutplates. No need to 

> reinvent the wheel if there is already a good solution out there.

>

> Eric Kallio

>

>

> Read this topic online here:

>

> http://forums.matronics.com/viewtopic.php?p=320801#320801

>

dlm46007(at)cox.net
Guest

Posted: Wed Nov 24, 2010 3:05 pm Post subject: VOR/GS/LOC antenna mount

The main reason to not mount under  the tail is the antenna in eye problem for any little people around the  aircraft. 

 ---

n801bh(at)netzero.com
Guest

Posted: Wed Nov 24, 2010 3:49 pm Post subject: VOR/GS/LOC antenna mount

I have been to enought airshows/flyins etc where the general public have access to my experimental and kids that small without supervision will use the antenna as a chin up bar and pull it off the plane. If they are dumb enough to happen to poke themselves in the eye then the PARENTS are at fault. And me of course for providing a play toy for ill behaved kids. Keep in mind when flying ALL VOR stations are below you and so are all the transmitting ATC radio stations. It just makes sense to mount those antennes on the bottom of the aircraft............ Just my humble opinion. 

Ben Haas

N801BH

www.haaspowerair.com



--------

davidsoutpost(at)comcast.
Guest

Posted: Wed Nov 24, 2010 4:44 pm Post subject: VOR/GS/LOC antenna mount

I thought long and hard on this and made the decision to put it up on the vertical stabilizer and modified the fiberglass tip so it fit and made it removable.  I did not want it on the bottom because of how bad it looks there and also for accidentally running into it,,,,myself on anyone else.  My thoughts on reception are that it might work better on the bottom, however they do seem to work just fine on the majority of certified GA planes, including my Cessna,,,,so that's where I put it and I am happy with my decision.   



David Clifford



RV-10 Builder

65% Done-95% To Go

N849RV (reserved)



---

Eric_Kallio

Joined: 29 Jan 2006
Posts: 149
Location: Baton Rouge, LA

Posted: Wed Nov 24, 2010 5:17 pm Post subject: Re: VOR/GS/LOC antenna mount

I wanted it on top too, but I didn't come to that conclusion until after the VS was built and even mounted now. A little too late to go back and make provisions to run the coax up to an antenna. My lack of prior planning is what drove my decision to put it on the bottom. I don't have kids, but I did recognize that problem with the eye hazard and will be getting some brightly colored, and very light weight foam balls to put on the ends on the ground turning the point into a blunt end.



Eric

carl.froehlich(at)verizon
Guest

Posted: Wed Nov 24, 2010 6:36 pm Post subject: VOR/GS/LOC antenna mount

I agree with the earlier posts - the very marginal gain of having any external VOR/GS antenna over a wingtip one is not worth the risk of anyone poking out an eye.



I have a homebrew wintip antenna in my 8A that receives stations quite well.  A few pieces of aluminum out of the scrap bin and you're done.  I'll make an identical one for the 10.



Carl

Sent from my mobile phone.   Please read past the typos.

-----Original message-----

[quote]From: Eric_Kallio <scout019(at)msn.com>

To: rv10-list(at)matronics.com

Sent: Thu, Nov 25, 2010 01:17:37 GMT+00:00

Subject: RV10-List: Re: VOR/GS/LOC antenna mount

larkrv10(at)yahoo.ca
Guest

Posted: Wed Nov 24, 2010 6:45 pm Post subject: VOR/GS/LOC antenna mount

Eric, re-read your email after I sent my first message.  I used K-1000-3 nut plates for a #10-32 screw or AN 3 bolt.

  

 Rick



--- On Wed, 11/24/10, Eric_Kallio <scout019(at)msn.com> wrote:



  	  Quote: 	
		  

From: Eric_Kallio <scout019(at)msn.com>

Subject: VOR/GS/LOC antenna mount

To: rv10-list(at)matronics.com

Received: Wednesday, November 24, 2010, 3:00 PM



 --> RV10-List message posted by: "Eric_Kallio" <scout019(at)msn.com (scout019(at)msn.com)>



Getting ready to mount the cat whisker type LOC antenna as one of the ever shrinking list of things to finish before inspection. Because I didn't plan ahead when building the VS I am going to mount the antenna under the tail. Anyone have pics of how they did their mount. particularly what you did for a doubler and nutplates. No need to reinvent the wheel if there is already a good solution out there.



Eric Kallio





Read this topic online here:



http://forums.matronics.com/viewtopic;          (And Get Some AWESOME FREE Gifts!)-=   --> http://www.matronics.com/Navigasp;              - MATRONICS WEB FO/" ======





	


 [quote][b]

larkrv10(at)yahoo.ca
Guest

Posted: Wed Nov 24, 2010 6:45 pm Post subject: VOR/GS/LOC antenna mount

Eric

  

 I just made a doubler for a Comant CI 157P and installed it last weekend.  I used 2024T3 .063", and then rivetted it in the rear tail cone as others have done.  Tim Olson has a couple of pictures of the exterior placement on his web site, in misc photos, "The Colorado 10's".  I alodined the area under the doubler as I hadn't primed that area.  Also alodined both sides of the doubler and the circular area on the ouside of the tail skin.  

  

 I'm not going to worry about kids or anyone bumping the antenna.  If anyone hits it, it will likely be me.  I wanted the best possible reception I can get as we have far fewer VOR's here north of the 49th parallel.

  

 Rick

 #40956

 Southampton, Ont

  

 

--- On Thu, 11/25/10, Eric_Kallio <scout019(at)msn.com> wrote:



  	  Quote: 	
		  

From: Eric_Kallio <scout019(at)msn.com>

Subject: Re: VOR/GS/LOC antenna mount

To: rv10-list(at)matronics.com

Received: Thursday, November 25, 2010, 1:17 AM



 --> RV10-List message posted by: "Eric_Kallio" <scout019(at)msn.com (scout019(at)msn.com)>



I wanted it on top too, but I didn't come to that conclusion until after the VS was built and even mounted now. A little too late to go back and make provisions to run the coax up to an antenna. My lack of prior planning is what drove my decision to put it on the bottom. I don't have kids, but I did recognize that problem with the eye hazard and will be getting some brightly colored, and very light weight foam balls to put on the ends on the ground turning the point into a blunt end.



Eric





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Robin(at)PaintTheWeb.com
Guest

Posted: Wed Nov 24, 2010 7:35 pm Post subject: VOR/GS/LOC antenna mount

Agreed. Photo attached. 

 

Robin 

 

 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 carl.froehlich(at)verizon.net (carl.froehlich(at)verizon.net)

 Sent: Wednesday, November 24, 2010 6:28 PM

To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)

Subject: Re: Re: VOR/GS/LOC antenna mount

  

I agree with the earlier posts - the very marginal gain of having any external VOR/GS antenna over a wingtip one is not worth the risk of anyone poking out an eye.

 

I have a homebrew wintip antenna in my 8A that receives stations quite well.  A few pieces of aluminum out of the scrap bin and you're done.  I'll make an identical one for the 10.



Carl

Sent from my mobile phone.   Please read past the typos.

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Tim Olson

Joined: 25 Jan 2007
Posts: 2882

Posted: Wed Nov 24, 2010 8:42 pm Post subject: VOR/GS/LOC antenna mount

I sometimes find it funny when everyone makes a big

deal out of the ol "poke yer eye out" argument about

the whiskers under the tail.  Since the beginning of

2006, I've managed to have my plane at flyins all

over, have kids playing in the hangar for hours and

hours, and push my plane in next to a table, a

snowblower, a kerosene heater, and other things in the

hangar.  Not once has it been an issue for injury

or damage.  It really isn't that wide, and being

directly under the VS, it's not really a place that

anyone other than kids COULD play...but they don't.

Sure, it could happen, and maybe it could happen

to your kid.  Certainly it's up to you to make your

choice on that.  I just don't see that it's a real

issue.



The ones that I've had closer encounters with are

the belly Com's, as I clean the belly with my creeper.



For the whiskers, the idea of the foam balls, or

a rubber cap and streamer would be a good option if

you want some added protection while at fly-ins.  It's

really about the only time you'll even care about

the whiskers.



Tim Olson - RV-10 N104CD

do not archive

On 11/24/2010 7:17 PM, Eric_Kallio wrote:

 	  Quote: 	
		   



 I wanted it on top too, but I didn't come to that conclusion until

 after the VS was built and even mounted now. A little too late to go

 back and make provisions to run the coax up to an antenna. My lack of

 prior planning is what drove my decision to put it on the bottom. I

 don't have kids, but I did recognize that problem with the eye hazard

 and will be getting some brightly colored, and very light weight foam

 balls to put on the ends on the ground turning the point into a blunt

 end.



 Eric

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