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Transponder Antenna Question



 
 
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  #1  
Old December 27th 03, 09:47 PM
Jay Honeck
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Default Transponder Antenna Question

Will my new Garmin GTX-327 transponder work okay with my existing Narco
transponder antenna?

We're having it installed next week, or whenever the 337 is approved --
whichever comes first.

Thanks!
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"


  #2  
Old December 27th 03, 10:25 PM
Sven
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Default

Transponder antennae are 'suppose' to be generic and should work with any
transponder.

"Jay Honeck" wrote in message
news:O5nHb.476945$Dw6.1401231@attbi_s02...
Will my new Garmin GTX-327 transponder work okay with my existing Narco
transponder antenna?

We're having it installed next week, or whenever the 337 is approved --
whichever comes first.

Thanks!
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"




  #3  
Old December 27th 03, 10:55 PM
karl gruber
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Default

You should replace the antenna and coax. Although the old will probably
work, these components are prone to fail with age and live in a hostile
environment.

Karl


  #4  
Old December 27th 03, 11:04 PM
Jay Honeck
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Default

You should replace the antenna and coax. Although the old will probably
work, these components are prone to fail with age and live in a hostile
environment.


Okay, I can understand replacing the coax. But the antenna?

How hostile does an environment have to be before it hurts a solid piece of
metal?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"


  #5  
Old December 27th 03, 11:44 PM
Vaughn
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Default


"Jay Honeck" wrote in message
news:2eoHb.679572$Fm2.588248@attbi_s04...
You should replace the antenna and coax. Although the old will probably
work, these components are prone to fail with age and live in a hostile
environment.


Okay, I can understand replacing the coax. But the antenna?

How hostile does an environment have to be before it hurts a solid piece

of
metal?


It is not so much the solid piece of metal as it is the CONNECTION to
the solid piece of metal. Water and corrosion always seem to make their way
into the base of the antenna and ruin the connection to the coax. I run a
radio shop and we throw away hundreds of stainless steel antennas every
year, because we have discovered that it is the best thing to do with them.
We replace the entire unit after about two years of use, hopefully before it
fails. Some archieolgist will probably dig them up at the dump thousands of
years from now and those bits of metal will still be bright and useful
looking.

Vaughn




  #6  
Old December 27th 03, 11:55 PM
karl gruber
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Default

****How hostile does an environment have to be before it hurts a solid piece
of metal?****

Antennas corrode from the inside out, or from the outside in, and just like
everything on an airframe, have a finite lifespan. How old is the antenna?
Was the old antenna even placed in the right place on the airframe? A lot of
times they were not, even from the factory.

http://www.seqair.com/skunkworks/Ant...xAntProbs.html

http://www.bedichek.org/cirrus.html

Besides, transponder antennas are cheap, in the realm of aviation.


Karl
just off a 9000 nm flight in 36 hrs.


  #7  
Old December 28th 03, 03:03 AM
BTIZ
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its the cover and shielding in the coax..

BT

"Jay Honeck" wrote in message
news:2eoHb.679572$Fm2.588248@attbi_s04...
You should replace the antenna and coax. Although the old will probably
work, these components are prone to fail with age and live in a hostile
environment.


Okay, I can understand replacing the coax. But the antenna?

How hostile does an environment have to be before it hurts a solid piece

of
metal?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"




  #8  
Old December 28th 03, 05:21 AM
Jeff
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Posts: n/a
Default

my collins antenna worked fine with my new garmin x-ponder

Jay Honeck wrote:

Will my new Garmin GTX-327 transponder work okay with my existing Narco
transponder antenna?

We're having it installed next week, or whenever the 337 is approved --
whichever comes first.

Thanks!
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"


  #9  
Old December 29th 03, 05:42 AM
Mike Rapoport
external usenet poster
 
Posts: n/a
Default

Start replacing anything and you invite "repair damage". Leave it alone if
it works.

Mike
MU-2


"Jay Honeck" wrote in message
news:2eoHb.679572$Fm2.588248@attbi_s04...
You should replace the antenna and coax. Although the old will probably
work, these components are prone to fail with age and live in a hostile
environment.


Okay, I can understand replacing the coax. But the antenna?

How hostile does an environment have to be before it hurts a solid piece

of
metal?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"




  #10  
Old December 29th 03, 03:37 PM
Ben Haas
external usenet poster
 
Posts: n/a
Default

"Vaughn" wrote in message ...
"Jay Honeck" wrote in message
news:2eoHb.679572$Fm2.588248@attbi_s04...
You should replace the antenna and coax. Although the old will probably
work, these components are prone to fail with age and live in a hostile
environment.


Okay, I can understand replacing the coax. But the antenna?

How hostile does an environment have to be before it hurts a solid piece

of
metal?


It is not so much the solid piece of metal as it is the CONNECTION to
the solid piece of metal. Water and corrosion always seem to make their way
into the base of the antenna and ruin the connection to the coax. I run a
radio shop and we throw away hundreds of stainless steel antennas every
year, because we have discovered that it is the best thing to do with them.
We replace the entire unit after about two years of use, hopefully before it
fails. Some archieolgist will probably dig them up at the dump thousands of
years from now and those bits of metal will still be bright and useful
looking.

Vaughn



Every TWO years ?????????? You must have alot of government contracts.
Those suckers will do crap like that and raise all of our taxes to
cover it...
Ben Haas N801BH.. The Hole.
 




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