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  #41  
Old 04-08-2019, 04:28 PM
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DanH DanH is offline
 
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Location: 08A
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Quote:
Originally Posted by Ted RV8 View Post
Maybe Garmin will jump in here. When I was doing mine and wanted to do the same thing was told it would do damage.
Pulled the GDL-82 antenna leads out of the system to fly per Garmin.
I hope they do. What would it damage?
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Barrett IO-390
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  #42  
Old 04-08-2019, 05:13 PM
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Aviaman Aviaman is offline
 
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Location: Louisville KY
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Default Garmin GDL-82 ADSB

It seems highly unlikely the GDL-82 would be damaged because its GPS input antenna is not connected. What I am asking is whether the GDL-82 transmits the transponder data it receives, even though the GDL-82 does not have its gps antenna information. In other words does it default to re-broadcast of the transponder mode C data, or just remain silent?
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Cessna 170B-sold
Zenith 601XL-sold
Vans RV-6 slider-sold
Vans RV-9A slider, flying
O-360, AFS EFIS, True-track autopilot, Garmin GDL-82 ADS-B, Garmin 327 Transponder, Garmin 496

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  #43  
Old 04-08-2019, 05:50 PM
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g3xpert g3xpert is offline
 
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Location: Olathe, KS
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Quote:
Originally Posted by Aviaman View Post
I have my GDL-82 wiring ready to install but it hasn?t been configured with the software installation tool, and the external gps antenna is not yet connected. However the transponder output is connected to the GDL-82 and its output is connected to the ads-b out antenna. My question is whether the GDL-82 will pass the transponder signal to the adsb out antenna, even though the GDL-82 is not configured and doesn?t have its gps antenna connected. I want to fly before everything is finalized, but will need the transponder out signal. Yes, I could just connect the transponder directly to the out antenna, but that requires more under the panel crawling.
Hello John,

It wouldn't be wise to operate the GDL 82 (apply power) and fly with it without having it configured or having GPS data.

As explained in this posting, when a transponder is connected to a GDL 82, it should be considered one system which must all be working for any guaranteed performance. There is no guarantee that your transponder will meet its design requirements when the GDL 82 is not operational.

If you want to fly now and use the transponder without the GDL 82 being fully operational, you should re-connect the transponder antenna to the transponder and keep the GDL 82 unpowered.

Thanks,
Steve
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  #44  
Old 04-08-2019, 06:36 PM
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Quote:
Originally Posted by g3xpert View Post
It wouldn't be wise to operate the GDL 82 (apply power) and fly with it without having it configured or having GPS data.
Thanks Steve. I think he was asking about operating the transponder with the GDL-82 unpowered. "Guaranteed performance" aside, would doing so damage something?
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  #45  
Old 04-08-2019, 07:29 PM
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Aviaman Aviaman is offline
 
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Default Garmin GDL-82 adsb

Let me ask a simpler question: Assume the Gdl82 is powered up. What does the gdl82 do when there is a loss of gps signal (a loose BNC gps antenna connector, water in the connector, etc.) ? Does it still pass (re-transmit) the mode C information from the transponder? Or does it go silent, or do something else?
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Cessna 170B-sold
Zenith 601XL-sold
Vans RV-6 slider-sold
Vans RV-9A slider, flying
O-360, AFS EFIS, True-track autopilot, Garmin GDL-82 ADS-B, Garmin 327 Transponder, Garmin 496

Dues happily paid Jan 3, 2020
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  #46  
Old 04-08-2019, 07:32 PM
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Aviaman Aviaman is offline
 
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Default Garmin GDL-82 Adsb

And also do you have an answer to Mr. Hortons question about th unpowered GDL-82 ?
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Cessna 170B-sold
Zenith 601XL-sold
Vans RV-6 slider-sold
Vans RV-9A slider, flying
O-360, AFS EFIS, True-track autopilot, Garmin GDL-82 ADS-B, Garmin 327 Transponder, Garmin 496

Dues happily paid Jan 3, 2020
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  #47  
Old 04-08-2019, 10:43 PM
simpkinsona simpkinsona is offline
 
Join Date: Dec 2010
Location: Vacaville, CA
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Default Pass through

I flew mine with the GDL-82 unpowered for one flight. I called up a local tower controller and he confirmed a good transponder reply. I wanted to confirm that my Becker transponder would work with the GDL-82 before trying it with the GDL powered up. The antenna connection goes straight through. I see no reason you can?t fly that way indefinitely.

-Andy
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  #48  
Old 05-21-2019, 07:57 AM
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Eddie P Eddie P is offline
 
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Location: Aptos, CA (previously Reno, 21 years!)
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Quote:
Originally Posted by Greg Dillon View Post
]I installed the GDL 82 behind the baggage area on the floor. GPS antenna on the turtledeck almost directly above the unit, 'Shark fin' L-band antenna at the rear of the fuselage, all connected with RG-400 cable. No interference issues with the GTR-200 comm, CreativAir strobe pack, or ancient Lowrance 2000C GPS.

Greg RV-9A N4603X
EFII 0-320-H2AD
Catto 3 blade
Sounds like a good installation, anyone out there in an RV-8 doing something similar? I'm planning for either the GDL-82 to go with my GTX-327 Transponder or perhaps the Tailbeacon for an easier install.

Can anyone comment on the Tailbeacon vs the GDL-82 in terms of user experience, or pros and cons? The installation is the only con on the GDL-82 it seems at this point. Thanks.
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  #49  
Old 05-22-2019, 05:03 PM
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Eddie P Eddie P is offline
 
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Hello Carl, thank you for sharing the excellent link - most helpful!
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  #50  
Old 10-17-2019, 12:13 PM
30752mr 30752mr is offline
 
Join Date: Oct 2019
Location: Dayton
Posts: 11
Default install photos?

Quote:
Originally Posted by bobg56 View Post
The install is complete, ground checks done, flt. check done and passed...rebate on it's way, ADS-B compliant! Sweet!
Can you provide any photos of your install. Getting ready to do the same, but cant decide where to put everything. any help would be greatly appreciated.
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