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Transponder antenna position

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kenatkinson(at)ktdinterne
Guest

Posted: Thu Apr 10, 2008 2:46 am Post subject: Transponder antenna position

I have just received my Filser TRT 800 mode S  transponder and am pondering on where to position the antenna.  Has anyone  already successfully fitted, tested one.Also has it been  approved?       

                  Ken.

   [quote][b]

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josok-e(at)ukolo.fi
Guest

Posted: Thu Apr 10, 2008 3:52 am Post subject: Transponder antenna position

I stuck a Bob Archer thing against the luggage bay bulkhead. First wrong way, it has to be horizontal. The radio stays clean, no ticking sounds from the transponder, and ATC sees me even in the steel hangar  It's a nice transponder. and backs up as an altimeter with it's encoder built in. I am very happy with it. 



Regards,



Jos Okhuijsen

Visit -  www.EuropaOwners.org

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jimpuglise(at)comcast.net
Guest

Posted: Thu Apr 10, 2008 8:01 am Post subject: Transponder antenna position

Jos-

  

 I installed the Bob Archer antenna back in the tailcone on a piece of balsa.  However, I installed it vertically.  Transponder antennas are vertically polarized, aren't they, or am I confused?

  

 BTW, I have a new sailboat -- get over and try it. 

  

 Jim Puglise A-283

  

  ator t  [quote][b]

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DuaneFamly(at)aol.com
Guest

Posted: Thu Apr 10, 2008 9:14 am Post subject: Transponder antenna position

Jim,

  

 I just installed the Bob Archer Transponder ant. and, yes, it is supposed  to go horizontally. The connector should be closest to the front of the aircraft  with the opposite end (that containing the mass of the ant. copper element)  should point towards the tail.

  

  Mike Duane  A207A

Redding, California

XS Conventional Gear

Jabiru 3300  

Sensenich R64Z N

Ground Adjustable Prop



  

  In a message dated 4/10/2008 9:02:32 A.M. Pacific Daylight Time,  jimpuglise(at)comcast.net writes:

  	  Quote: 	
		     Jos-

    

   I installed the Bob Archer antenna back in the tailcone on a piece of    balsa.  However, I installed it vertically.  Transponder antennas    are vertically polarized, aren't they, or am I confused?

    

   BTW, I have a new sailboat -- get over and try it. 

    

   Jim Puglise A-283

    

ator t  	  Quote: 	
		  



f="http://www.matronics.com/Navigator?Europa-List">http://www.matronics.com/Navigator?Europa-List

.matronics.com/">http://forums.matronics.com

://www.matronics.com/contribution">http://www.matronics.com/contribution



  	
	




Planning your summer road trip? Check out AOL Travel Guides.

  [quote][b]

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josok-e(at)ukolo.fi
Guest

Posted: Thu Apr 10, 2008 11:14 am Post subject: Transponder antenna position

Jim, sorry, i first installed the antenna, then i read the manual and changed the polarization. Now i don't remember what's up and down  

But i do remember a great sailing trip, and agree it's worth suffering an other border security check by those black uniformed #¤/¤#¤%/.

But i am afraid it will take another year before it's possible, don't sell it yet!



Regards,



Jos Okhuijsen

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grahamsingleton(at)btinte
Guest

Posted: Thu Apr 10, 2008 2:42 pm Post subject: Transponder antenna position

Jos

I thought transponder polarisation was vertical? I always put the Bob 

Archer thing (excellent imho) with its two arms vertical and the feeder 

from the BNC horizontal. Am I getting confussed ?

Graham



josok wrote:

 	  Quote: 	
		   

 

 I stuck a Bob Archer thing against the luggage bay bulkhead. First wrong way, it has to be horizontal. The radio stays clean, no ticking sounds from the transponder, and ATC sees me even in the steel hangar  It's a nice transponder. and backs up as an altimeter with it's encoder built in. I am very happy with it. 

 

 Regards,

 

 Jos Okhuijsen

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DuaneFamly(at)aol.com
Guest

Posted: Thu Apr 10, 2008 7:42 pm Post subject: Transponder antenna position

I think we simply have a semantics problem. I hope this drawing makes it  intact. If not, I'll scan the last page of the install instructions and post  it.

  

  

  

                                                                     ..................                                                                        

                                                                     .                .

                                                                     .                .

                     O----------------------------------------------.................

               BNC  Conn                                       .                .

                                                                     .                .

             <-----------  Pilot                                     ................                Tail -------------->

  

  

 Mike Duane  A207A

Redding, California

XS Conventional Gear

Jabiru  3300A

Sensenich R64Z N

Ground Adjustable  Prop



Planning your summer road trip? Check out AOL Travel Guides.

  [quote][b]

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topglock(at)cox.net
Guest

Posted: Mon Apr 14, 2008 12:07 pm Post subject: Transponder antenna position

According to the Archer manual, it's vertically mounted.  Mine is just 

behind the baggage bay, on the port side.  Never a problem being seen...

Jeff - Baby Blue

396 hrs

Graham Singleton wrote:

 	  Quote: 	

 <grahamsingleton(at)btinternet.com>

 Jos

 I thought transponder polarisation was vertical? I always put the Bob 

 Archer thing (excellent imho) with its two arms vertical and the feeder 

 from the BNC horizontal. Am I getting confussed ?

 Graham

 josok wrote:

> 

>

> I stuck a Bob Archer thing against the luggage bay bulkhead. First 

> wrong way, it has to be horizontal. The radio stays clean, no ticking 

> sounds from the transponder, and ATC sees me even in the steel hangar 

>  It's a nice transponder. and backs up as an altimeter with it's 

> encoder built in. I am very happy with it.

> Regards,

>

> Jos Okhuijsen

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