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20 Jan 2018, 20:47 [ UTC - 5; DST ]


Greenwich AeroGroup



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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 14 Dec 2017, 15:27 
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Joined: 10/15/17
Posts: 10
Username Protected wrote:
Way to go Garmin!
I almost sprung for a Stratus ESG but my procrastination paid off.
This leaves me something left over to purchase a slide in replacement for my KT76A.
It would help to know whether the GDL82 will qualify for that rebate though..... :hammer:


I am struggling with this myself.

On the one hand you can get a brand new Stratus ES for $2500. For this to work, you need a certified ADS-B approved IFR Navigator (GNS-W, GTN, IFD). Most of us already have this.

Or, for $700 cheaper, you can add this box, but need to drill and install another antenna (removing the headliner..?) and you're stuck with an old transponder.

To me it seems cleaner to have a transponder use GPS signals you already have. I'm sure waiting another year will give even more options.


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 15 Dec 2017, 17:04 
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Joined: 02/27/17
Posts: 227
Post Likes: +64
Company: Garmin
Username Protected wrote:
I am struggling with this myself.

On the one hand you can get a brand new Stratus ES for $2500. For this to work, you need a certified ADS-B approved IFR Navigator (GNS-W, GTN, IFD). Most of us already have this.

Or, for $700 cheaper, you can add this box, but need to drill and install another antenna (removing the headliner..?) and you're stuck with an old transponder.

To me it seems cleaner to have a transponder use GPS signals you already have. I'm sure waiting another year will give even more options.


Hello Chris,

I may misunderstand what you are saying, but you may certainly use an existing GNS 4XXW/5XXW (including GNS 480) or GTN 6XX/7XX as the position source for the GDL 82 if you prefer to do this instead of adding the GDL 82 GPS antenna.

Page 10-2 of the GDL 82 Installation manual (Rev. 3) shows how to wire these external navigators to the GDL 82.

The GDL 82 began shipping today.

_________________
Thanks,
Steve


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 15 Dec 2017, 20:35 
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Joined: 10/05/09
Posts: 828
Post Likes: +117
Location: Charleston, SC (KJZI)
Aircraft: Phenom 100, Extra330
I was initially sold on the GDL-82 device and have a reservation but after discovering that it does not work with my Mode-S transponder I started to look for alternatives. My Extra has a very small panel and it’s made out of carbon fiber so needless to say I don’t want to mess with it, thus I am limited to a 58mm 2-1/4 hole. There are no current Mode-A/C transponders that fit this hole. Becker will swap my BXP6401 for an obsolete demo unit. OK so I save $1900 initially but what happens when that obsolete unit craps out. I am considering the Trig TT22 solution that doesn’t make me use an obsolete transponder. Not sure what the used Becker is worth but it should reduce the 1900 delta.

Becker will modify the BXP6401 but it isn’t FAA ADSB certified; very helpful.

Not sure if you all have seen the new gizmo from https://www.uavionix.com. Supposed to replace the Nav light with a ADSB unit that will work with any mode Transponder. Could be a great solution that doesn’t require replacing the Mode-S. Won’t work on the Extra but should be OK on a Beech.


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 16 Dec 2017, 11:48 
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Joined: 10/15/17
Posts: 10
Username Protected wrote:
I am struggling with this myself.

On the one hand you can get a brand new Stratus ES for $2500. For this to work, you need a certified ADS-B approved IFR Navigator (GNS-W, GTN, IFD). Most of us already have this.

Or, for $700 cheaper, you can add this box, but need to drill and install another antenna (removing the headliner..?) and you're stuck with an old transponder.

To me it seems cleaner to have a transponder use GPS signals you already have. I'm sure waiting another year will give even more options.


Hello Chris,

I may misunderstand what you are saying, but you may certainly use an existing GNS 4XXW/5XXW (including GNS 480) or GTN 6XX/7XX as the position source for the GDL 82 if you prefer to do this instead of adding the GDL 82 GPS antenna.

Page 10-2 of the GDL 82 Installation manual (Rev. 3) shows how to wire these external navigators to the GDL 82.

The GDL 82 began shipping today.



Steve,

Thanks for the info... my mistake. I thought the GDL 82 was required to use its own internal GPS position. I'm glad to hear it can get the signal from any approved position source.

I'll markup my original post.

Meanwhile... yall get busy on certifying the G3X for part 23! :D


Edit: turns out I can't markup the 14 Dec post...

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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 19 Dec 2017, 10:59 
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Joined: 04/22/13
Posts: 27
Aircraft: BE58, A1-B
Username Protected wrote:
Any word as to when the installation manual will be available, or the ship date?

^ This. My A/I wants to see these things before installation/purchase.


^^^^
What they said...


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 19 Dec 2017, 11:03 
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Joined: 04/22/13
Posts: 27
Aircraft: BE58, A1-B
Also... what happens when this box takes a time-out?

Does the whole system (txpr output and all) puke out, or does it just let the txpr communications pass through unimpeded?

Apologies if this was already answered, in which case I missed it.


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 19 Dec 2017, 11:43 
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Joined: 08/12/08
Posts: 4720
Post Likes: +351
Location: Santa Barbara, CA
Aircraft: '76 A36 TAT TN 550
What happens if any transponder quits?

I'm sure we'll be able to complete our flight but after that repairs will be necessary, right?

_________________
ABS Life Member


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 19 Dec 2017, 14:58 
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Posts: 27
Aircraft: BE58, A1-B
Clearly not worried about the aircraft falling out of the sky, but say you’re cruising through an ADIZ on an IFR flight plan. It could mean the difference between ATC getting nervous and ATC getting very nervous.


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 19 Dec 2017, 15:34 
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Joined: 02/27/17
Posts: 227
Post Likes: +64
Company: Garmin
Username Protected wrote:
Any word as to when the installation manual will be available, or the ship date?

^ This. My A/I wants to see these things before installation/purchase.


^^^^
What they said...

Hello Tom,

The GDL 82 is shipping now.

You might have missed my earlier post with the link to the GDL 82 installation manual, so here it is again.

GDL 82 Installation Manual

GDL 82 PC Installation Tool

Thanks for your interest.
_________________
Thanks,
Steve


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 20 Dec 2017, 01:27 
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Aircraft: CRUZ
Username Protected wrote:
Trek,

Will the GDL82 be an option for G1000 aircraft?


Hello Steve,
yes, but a new GPS WAAS antenna will need to be installed.


Trek,

This is totally contrary to what I was told by Kyle Lennemann, Aviation Associate Sales Manager, Garmin International, who I asked, "My question, therefore, is... Since I have to continue to use FF/Stratus for ADS-B weather, anyway, is there any reason for me to not get the GDL82 (along with a GA35 antenna, needed anyway for the GTX345R), rather than the GTX345R? It appears that the installation and cost would be greatly reduced."

Mr. Lennemann's response was, "The GDL 82 can only be used with Mode A/C transponders. The DA-40 comes standard with a GTX 33, which is a mode S transponder and is not compatible with the GDL 82."

For what it's worth, the GDL-82 Installation Manual http://static.garmin.com/pumac/190-01810-00_03.pdf , at Section 1.3, specifically states, "The GDL 82 should not be installed with a Mode S transponder."

What gives?

Sandy

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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 20 Dec 2017, 11:19 
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Joined: 04/22/13
Posts: 27
Aircraft: BE58, A1-B
Username Protected wrote:
Hello Tom,

The GDL 82 is shipping now.

You might have missed my earlier post with the link to the GDL 82 installation manual, so here it is again.

GDL 82 Installation Manual

GDL 82 PC Installation Tool

Thanks for your interest.


Thanks Steve, I caught that after I posted. How about this question? -

What happens when this box takes a time-out? For example - The GDL 82 loses power

Does the whole system (txpr output and all) puke out, or does it just let the txpr communications pass through unimpeded?

Apologies if this was already answered, in which case I missed it.


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 20 Dec 2017, 12:41 
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Joined: 08/12/08
Posts: 4720
Post Likes: +351
Location: Santa Barbara, CA
Aircraft: '76 A36 TAT TN 550
Username Protected wrote:
Clearly not worried about the aircraft falling out of the sky, but say you’re cruising through an ADIZ on an IFR flight plan. It could mean the difference between ATC getting nervous and ATC getting very nervous.

Hi Tom,

Having ADSB Out quit is a possibility. Same with anything else like a transponder.

It is an outcome we just handle. Same as ATC.

I've had alternators and transponders quit at the wrong time. Pilots and ATC handle it. So far the FAA does not require backup transponders.

From everything I've read the GLD 82 is a fantastic solution. Low cost, simple to install and manufactured by GA's leading avionics company.

What's not to like?

_________________
ABS Life Member


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 20 Dec 2017, 14:05 
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Posts: 227
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Company: Garmin
Username Protected wrote:
Thanks Steve, I caught that after I posted. How about this question? -

What happens when this box takes a time-out? For example - The GDL 82 loses power

Does the whole system (txpr output and all) puke out, or does it just let the txpr communications pass through unimpeded?

Apologies if this was already answered, in which case I missed it.

Hello Tom,

Good question. The installation manual requires the the Mode C transponder and GDL 82 share a common breaker and be powered on/off together, so loss of power to just the GDL 82 is something the installation attempts to avoid.

It is best to consider the Mode C transponder and connected GDL 82 as a single system, any failure of which would cause loss of the combined function. This is no different from having an all-in-one ADS-B Out transponder that suffered a failure.

After 2020, there isn't much benefit to having just a Mode C transponder without ADS-B Out even if the transponder function could be maintained following a GDL 82 failure.

_________________
Thanks,
Steve


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 21 Dec 2017, 15:44 
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Joined: 04/22/13
Posts: 27
Aircraft: BE58, A1-B
:bang:


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 Post subject: Re: GDL82 $1795 ADSB
PostPosted: 22 Dec 2017, 01:48 
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Joined: 03/15/08
Posts: 1847
Post Likes: +215
Location: Loveland, CO
Aircraft: 35C-33
Well, I scoured the installation information looking for STC information and a long AML
There isn't one.

There is zero chance my FSDO will field approve such an installation done by anyone but a shop.

Damn, I should have verified this before ordering one, but there was little information available. Throws a wrench into the works and greatly diminishes the value proposition of the GDL-82. What did I read to think there would be an STC? Need to cancel the order.

:-( BH


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