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Old 07-29-2017, 09:00 PM   #1
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Default ADS-B transponder capability

Does an ATS-B have to be interfaced with a transponder. If so is a Norco AT 50 A suitable?

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Old 07-30-2017, 12:18 AM   #2
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Originally Posted by mreinh3233 View Post
Does an ATS-B have to be interfaced with a transponder. If so is a Norco AT 50 A suitable?
Yes, the transponder and ADS-B UAT talk to one another. If you equip with UAT, changes to your aircraft's ATCRBS Mode A or Mode A/C transponder are probably needed so that Mode A, IDENT, and Mode C information provided to the transponder and UAT units is identical. Depending on the capability of the AT50 controller you may need to install a second ADS-B controller to input the ATC code into the ADS-B. Now having said all of that, some of the slick new systems under development may mitigate some or all of the above on E-AB airplanes - talk with the new guy's reps.

I would also suggest you review AC 20-165B and talk with Nacro.


A block diagram might help.

Screen Shot 2017-07-29 at 9.43.48 PM.png  

Last edited by ab731; 07-30-2017 at 04:50 AM. Reason: Attached a FreeFlight Systems UAT block diagram
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Old 07-30-2017, 04:39 AM   #3
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This article is about 6 years old so unless something's changed since then Narco still is deader than dead.

Last edited by Morphewb; 07-30-2017 at 05:43 AM.
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Old 07-30-2017, 11:08 AM   #4
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Yea, might as well send it to me and I can put it on the shelf with my old VHT3 and other useless antiques. I have a couple old radios working when removed that I took out of various airplanes 40 years ago. When I got back into flying and joined the J3 forum I asked if the old radios were worth anything. I remember one guy who wrote me,

"You can send them to me for my long as YOU pay the shipping"

I know nothing about x-ponders, them may have a breath or two left in them but if you depend on them you may find yourself tied to the ground in 2020?
Finished Spezio Tu-holer N92JM(Oct. 2011), AcroDuster 2- SA750 N22JM, first flight 12-14-15
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