Matronics Email Lists :: View topic - Antennas Where are you mounting them?

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Antennas Where are you mounting them?

Matronics Email Lists Forum Index -> Zenith-List

View previous topic :: View next topic

Author Message

jmaynard

Joined: 27 Feb 2008
Posts: 394
Location: Fairmont, MN (FRM)

Posted: Fri Aug 29, 2008 5:54 am Post subject: Antennas Where are you mounting them?

On Fri, Aug 29, 2008 at 06:30:55AM -0700, lwhitlow wrote:

 	  Quote: 	
		   Where is everybody mounting the NAV antenna? Where did you get it from?


	


AMD gets their antennas from Comant. The NAV antenna is a CI 158, mounted on

the belly just in front of the rudder cables; the two COM antennas are CI

122s, mounted on the belly just forward of the rear spar; the transponder

antenna is a CI 101, mounted on the right side of the belly just aft of the

front spar; and there's a CI 177 VHF-FM antenna mounted to the center of the

turtledeck just aft of the rear baggage compartment bulkhead. The ELT

antenna is about a foot aft of the tip of the CI 177, with the OAT probe in

between.

-- 

Jay Maynard, K5ZC                   http://www.conmicro.com

http://jmaynard.livejournal.com      http://www.tronguy.net

Fairmont, MN (FRM)                        (Yes, that's me!)

AMD Zodiac CH601XLi N55ZC

_________________
Jay Maynard, K5ZC
AMD Zodiac XLi N55ZC

ideaz1(at)sbcglobal.net
Guest

Posted: Fri Aug 29, 2008 6:17 am Post subject: Antennas Where are you mounting them?

my 2 cents , look at certificated planes for ideas but a fiberglass com 

antenna eats up over 1 hp so go with stainless (spruce) and it's cheaper too 

and I plan to put it inside the rear of the canopy if it will fit and work 

there,



XPONDER antenna. bottom, near the unit to keep cable length short as 

possible. It's only about 1 1/2" long so no big deal.



NAV antenna bottom is good if you are not landing on rough stuff where it 

could get damaged otherwise as clear of obstructions as possible, turtle 

deck or top of vert stab.



Lunch is in Reno today, I'm helping a friend move.



Z



 	  Quote: 	
		   On the 601XL...



 Where is everybody mounting the NAV antenna? Where did you get it from?



 Where is everybody mounting the COM antenna Where did you get it from?



 Where is everybody mounting the XPONDER antenna. Where did you get it 

 from?



 Where is everybody going to lunch?     Gotcha just wanted to see if you 

 were paying attention!



 Thanks in advance



 Larry

 85% done with 71% to go





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 1413#201413

Terry Phillips

Joined: 11 Jan 2006
Posts: 346
Location: Corvallis, MT

Posted: Fri Aug 29, 2008 6:18 am Post subject: Antennas Where are you mounting them?

Good subject, Larry. I was  planning to mount my COM on the top of the 

rudder. I read somewhere that the top of the rudder was a great spot for RV 

antennas, and it made sense to me for  my 601XL. I bought an AV534L antenna 

from Pacific Coast Avionics. It was the the only antenna I found whose base 

looked to be small enough to fit on the top of the 601XL rudder.



Then, my EAA tech counselor advised me to mount it on the bottom of the 

fuselage. He said that it would be a shame to disturb the smooth air flow 

on the top of the A/C and incur the resultant drag. Since the airflow is 

pretty turbulent under the A/C, the disturbance from the antenna would be 

less significant. I'd love to hear if others have mounted their antenna on 

top of the rudder.



I've no plans on a NAV antenna.



Terry



At 06:30 AM 8/29/2008 -0700, you wrote:

 	  Quote: 	
		  All



I'm ordering electronics and have a couple of questions



On the 601XL...



Where is everybody mounting the NAV antenna? Where did you get it from?



Where is everybody mounting the COM antenna Where did you get it from?



Where is everybody mounting the XPONDER antenna. Where did you get it from?



Where is everybody going to lunch?     Gotcha just wanted to see if you 

were paying attention!



Thanks in advance



Larry

85% done with 71% to go


	




Terry Phillips  ZBAGer

ttp44~at~rkymtn.net

Corvallis MT

601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail, flaps, & ailerons 

are done; working on the wings

http://www.mykitlog.com/N47TP/

_________________
Terry Phillips
Corvallis, MT
ttp44<at>rkymtn.net
Zenith 601XL/Jab 3300 slow build kit - Tail feathers done; working on the wings.

jaybannist(at)cs.com
Guest

Posted: Fri Aug 29, 2008 6:33 am Post subject: Antennas Where are you mounting them?

Larry,



I've attached a photo showing where my ELT, comm & GPS antennae are 

mounted.  The transponder antenna is mounted in the floor just ahead of 

the wing spar center section.



Jay in Dallas

--

Zodiac04-05-07_001.jpg

Description:

Filesize:

127.42 KB

Viewed:

199 Time(s)

psm(at)att.net
Guest

Posted: Fri Aug 29, 2008 7:10 am Post subject: Antennas Where are you mounting them?

What vertical stabilizer?



Paul

do not archive



At 07:16 AM 8/29/2008, you wrote:



 	  Quote: 	
		  NAV antenna bottom is good if you are not landing on rough stuff 

where it could get damaged otherwise as clear of obstructions as 

possible, turtle deck or top of vert stab.

bryanmmartin

Joined: 10 Jan 2006
Posts: 1018

Posted: Fri Aug 29, 2008 8:22 am Post subject: Antennas Where are you mounting them?

I've got one com antenna mounted on the belly under the right seat and  

one mounted on top of the fuselage just forward of the baggage  

compartment bulkhead. I bought them both on eBay. My transponder  

antenna is mounted on the belly under the left seat, it's a TED  

antenna I bought from Aircraft Spruce. I have a home made nav antenna  

mounted on the top of the rudder. I also have a GPS antenna mounted on  

the top of the fuselage near the front end of the turtledeck inside  

the canopy. My ELT antenna is mounted on the right side of the baggage  

compartment so that it sticks up behind the right seat and under the  

canopy.



On Aug 29, 2008, at 9:30 AM, lwhitlow wrote:



 	  Quote: 	
		   



 All



 I'm ordering electronics and have a couple of questions



 On the 601XL...



 Where is everybody mounting the NAV antenna? Where did you get it  

 from?



 Where is everybody mounting the COM antenna Where did you get it from?



 Where is everybody mounting the XPONDER antenna. Where did you get  

 it from?



 Where is everybody going to lunch?     Gotcha just wanted to see  

 if you were paying attention!



 Thanks in advance




	




-- 

Bryan Martin

N61BM, CH 601 XL,

RAM Subaru, Stratus redrive.

do not archive.

_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.

naumuk(at)alltel.net
Guest

Posted: Fri Aug 29, 2008 2:35 pm Post subject: Antennas Where are you mounting them?

All-

    Question on the antennas. I have an exterior antenna that came with the 

ELT I bought on E-bay. Is it really going to make much difference speed-wise 

if I buy one of the fuselage-internal types?

                                                            Bill

---

psm(at)att.net
Guest

Posted: Fri Aug 29, 2008 3:52 pm Post subject: Antennas Where are you mounting them?

Hi Bill,



I don't think your ELT will work very well with an internal 

antenna.  Your metal airplane will shield the radio waves from the 

antenna and defeat the purpose.



I'm afraid antennas designed for internal mounting only work with 

non-metal airplanes.



Paul

XL nearly done

retarded (oops, I mean retired) electrical engineer

At 03:33 PM 8/29/2008, you wrote:

 	  Quote: 	
		  All-

    Question on the antennas. I have an exterior antenna that came 

 with the ELT I bought on E-bay. Is it really going to make much 

 difference speed-wise if I buy one of the fuselage-internal types?

                                                            Bill

bryanmmartin

Joined: 10 Jan 2006
Posts: 1018

Posted: Fri Aug 29, 2008 3:56 pm Post subject: Antennas Where are you mounting them?

Probably not.



You can't really mount one inside the fuselage anyway, the aluminum  

skins will block the signal from getting out. I have my ELT whip  

mounted so that it is inside the canopy but not blocked by the  

aluminum skin. It's mounted to the right side front corner of the  

baggage area and sticks up behind the right seat and it's bent to  

follow the curve of the canopy. I mounted it there because the ELT is  

mounted right next to it on the baggage shelf and it was simple to run  

a short cable to the antenna and I didn't want to drill another hole  

in the skin.



On Aug 29, 2008, at 6:33 PM, Bill Naumuk wrote:



 	  Quote: 	
		   



 All-

   Question on the antennas. I have an exterior antenna that came  

 with the ELT I bought on E-bay. Is it really going to make much  

 difference speed-wise if I buy one of the fuselage-internal types?

                                                           Bill


	




-- 

Bryan Martin

N61BM, CH 601 XL,

RAM Subaru, Stratus redrive.

do not archive.

_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.

amyvega2005(at)earthlink.
Guest

Posted: Fri Aug 29, 2008 5:33 pm Post subject: Antennas Where are you mounting them?

Comm  and transponder antennas shopuld be on the bottom of the aircraft as they will be recieving when up in the air.   Either way is fine as long as the antennas are not close to each other you can pretty much put them where ever it pleases you,



Juan



--

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum