On Monday, February 12, 2018 at 8:00:49 AM UTC-8, Bob Caldwell (BC) wrote:
On Sunday, February 11, 2018 at 4:04:37 PM UTC-7, Darryl Ramm wrote:
I just helped set up the Ramy Yanetz ASG29's TRIG TT21 transponder with a TN72 GPS Source to use as a TABS ADS-B out system. That along with PowerFLARM in his glider makes for a pretty capable overall traffic awareness/collision avoidance system.

Here is a screenshot of my portable Stratux ADS-B receiver (as would be used in many GA aircraft) receiving the ADS-B signal from the TT21 over 20 nautical miles away. Yes, it's a wave day out at Williams.

https://drive.google.com/file/d/1Kik...SlslyEyMPo62Mu

And again just an reminder, the TN72 is a ~$350 (+ GPS antenna + install costs) GPS Source that can easily be added to any Trig transponder to deliver ADS-B Out in your glider. (If you need full 2020 Compliant ADS-B Out it's a little more involved). This is low-enough cost that it will likely be a "just do it" choice for owners who already have a Trig transponder, and who especially want to provide more visibility to GA traffic (and it makes your glider visible to PowerFLARM buddies at much longer distances).

So how much of a hassle was it to update the XPDR and head on the TT21? My stuff is buried in the mess of other stuff under my glare shield. Can a local Trig dealer do it or does it have to go to Micro Air in Kansas?

I think just a typo, but to be clear Microair is a different transponder manufacturer (who does not make any Transponder capable of 1090ES Out or TABS, or even basic Mode S) .

If a Trig TT21 or TT22 needs a firmware update they have to go back to MidContinent, the USA Trig service center https://www.trig-avionics.com/support/u-s/. The update is free.

For use with the TN72 a TT21 or TT22 transponders need firmware 2.12 or higher and control head firmware 1.14 or higher.

The possible need to ship hardware back to MidContinent is one reason I have been advertising for a while why it is a good idea to get this done over this winter. Turn around there may only be a few days, call them and check.