Hi,

I have added Goddard wiring harnesses for the TN70 and TN72 to my web site. There are complete harnesses for new installations - with connections for the TT22, TC20 display head, and TN70 or TN72.

There are also new wiring harnesses that make it easy to add a TN70 or TN72 GPS to an existing TT22 transponder installation. The new wiring harness is designed to be inserted between the TT22 and the existing TT22 wiring harness. It has a DB-25m connector for connection to the TT22, a DB-25f connector for connection to the existing TT22 wiring harness, and DB-25f for connection to the TN70 GPS or DB-9f connector for connection to a TN72.

I have also added antenna cables for connecting a TN70 or TN72 to a TA70 GPS antenna.

Details are available on my Trig web page:
http://cumulus-soaring.com/trig.htm

Good Soaring,

Paul Remde
Cumulus Soaring, Inc.
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On Tuesday, December 12, 2017 at 3:48:05 AM UTC-6, Darryl Ramm wrote:
It must be time for some more ADS-B posts, either that or we can talk about PW5 :-)

With the ~$350 street price Trig TN72 GPS source now available in the USA I wanted to revisit my understanding of the situation with ADS-B Out in gliders. I wrote a forum post for local Northern California pilots but it probably helps lots of other folks in the USA. See https://www.williamssoaring..com/new...er-this-Winter

---

And specifically I want to correct some doubt/misinformation I've helped spread here before about the Trig TN72 GPS source when it was first announced. The TN72 is either (depending on how it is configured in the paired transponder) a:

1. TABS/TSO-C199 GPS source (with SIL=1)

*or*

2. A "meets performance requirement of TSO-C145c" GPS source (language I prefer, although Trig may say it differently) (with SIL=3)

(OK the TN72 can also do plain NMEA (with SIL=0), but that's not intersting here).

A little more details and the implications of this is described in post linked to above.

It would be great for folks doing 1090ES Out installs to share their experiences. Here, or contact me directly,

I am happy to try to answer questions.

I'm also planning to give a few talks on ADS-B (and FLARM and Transponders) over the next few months, certainly on the West Coast, details later.

Darryl