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  #1  
Old 10-08-2017, 07:34 AM
BigJohn BigJohn is offline
 
Join Date: Nov 2008
Location: Gloversville, NY
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Default uAvionix Echo UAT/GRT - Install Experience

Good Morning All,

Yes, I realize there are earlier threads on this product, but I find a lot of thread drift in those, and I would like to zero in on some specifics.

This unit looks pretty good to me for 2020 compliance for early RV-12ís with the original D-180ís. Iím looking for information and installation/operation advice specific to this configuration.

My 12 still has the original G496, but I am contemplating an upgrade to a G660. Does anyone have experience with interfacing this unit to the above?
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  #2  
Old 10-08-2017, 11:58 AM
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Piper J3 Piper J3 is offline
 
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I'm following this thread... I plan on installing the ECHO UAT with SkyFYX-EXT sometime next summer. I have an early 12 with D-180 and GTX 327. I want to mount the Sky GPS antenna next to the Garmin GPS antenna on the angle bracket under the cowling at the top of the firewall. Don't know yet where the ADS-B receiver will mount - I'm thinking behind the baggage compartment rear bulkhead.
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RV-12 E-LSA #120058 AWC 7/12 Bought Flying 10/15 with 48TT - Hobbs now 317

Last edited by Piper J3 : 10-08-2017 at 12:00 PM.
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  #3  
Old 10-08-2017, 01:42 PM
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turbo turbo is offline
 
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jim, you might need some seperation between gps antennas. posibly a foot or so.
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  #4  
Old 10-08-2017, 02:09 PM
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Piper J3 Piper J3 is offline
 
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Quote:
Originally Posted by turbo View Post
jim, you might need some seperation between gps antennas. posibly a foot or so.
I have been wondering about that and doing some research. The sheetmetal shelf looks to be designed to accommodate two "hockey puck" GPS antennas side by side.
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Jim Stricker
Hinckley, Ohio
P/ASEL 1970 Sport Pilot since '04
80 hrs Flying Aeronca Chief 11AC
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LSRM-A Certificate 2016
RV-12 E-LSA #120058 AWC 7/12 Bought Flying 10/15 with 48TT - Hobbs now 317
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  #5  
Old 10-08-2017, 02:31 PM
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Jesse Jesse is offline
 
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Location: X35 - Ocala, FL
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Quote:
Originally Posted by Piper J3 View Post
I have been wondering about that and doing some research. The sheetmetal shelf looks to be designed to accommodate two "hockey puck" GPS antennas side by side.
I have never separated GPS antennas and have thousands of fleet hours of no-problems.
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  #6  
Old 10-08-2017, 08:09 PM
painless painless is offline
 
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The need to separate, by a meter I believe, is for the transponder and adsb antennas.
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  #7  
Old 10-08-2017, 09:22 PM
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Piper J3 Piper J3 is offline
 
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Quote:
Originally Posted by painless View Post
The need to separate, by a meter I believe, is for the transponder and adsb antennas.
Yes, I got that part... That's why I plan to install the receiver in the tail cone. Short coax and long separation from transponder antenna. At least that's the plan for now.

Good to hear that GPS "hockey puck" antennas can be mounted side by side. The SkyFYX-EXT is an All-in-One GPS Receiver and Antenna. Think that would make any difference in the mounting position?
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Jim Stricker
Hinckley, Ohio
P/ASEL 1970 Sport Pilot since '04
80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J-3 Cub
LSRM-A Certificate 2016
RV-12 E-LSA #120058 AWC 7/12 Bought Flying 10/15 with 48TT - Hobbs now 317
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  #8  
Old 10-08-2017, 10:14 PM
BobTurner BobTurner is online now
 
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There have been a few reports - here on VAF - of gps antennas with internal electronics failing (due to heat?), and subsequently radiating a signal which blanked nearby gps antennas.
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  #9  
Old 10-08-2017, 10:35 PM
Canadian_JOY Canadian_JOY is offline
 
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Bob - it always seems I'm posting follow-ups after you've posted something... We've got to stop meeting like this!!!! :-)

The GA35 antennas from Garmin are somewhat (in)famous for acting as GPS jammers. Garmin claims this is caused by applying excessive torque to the antenna fasteners. I'm still not convinced as I've seen this same failure when no mounting screws were used.

Either way, it's quite possible for one GPS antenna to fail and become a jammer which will take out all the other GPS receivers on the airplane. Antenna separation won't help appreciably when this particular failure strikes. Switching off the offending GPS system is the only way to turn off the jamming and allow your other GPS receivers to work.

(For what it's worth, I have two of the little puck GPS antennas from GRT mounted side by side. They seem quite happy and in fact produce the best receive sensitivity of any GPS receivers I've ever owned.)
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  #10  
Old 10-08-2017, 11:13 PM
RicoB RicoB is offline
 
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I have just installed the echo, seems to work fine on the ground, i see traffic around.. Have not yet taken a flight.
Very simple install, I installed the echo skyfy-EXT next to my garmin on the front firewall.
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