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By the look of things...I should have spent my cash on a GDL 88 w/Waas instead of wasting $800 on the GDL 39, which I will have to replace to be compliant and/or spend a fortune having a GPS w/the required capabilities installed in my already too tight panel (tandem airplane). At least the GDL 88 can be remotely mounted out of the way and would not require panel surgery, that will ultimately cost me more $$.
I really feel like the avionics shop did a very poor job explaining what I was getting and I asked the question more than once...but I have only my own ignorance to blame. I've learned more about the ADS-B requirements from this thread than any of the other BS published. Thank You to VAF!! |
I have never noticed the TIS box not having an X. I will look closer next time.
Also, the MAP screen on the 796 is very bright and makes identifying the traffic symbols difficult. On the chart screen (sectional) the traffic symbols are very easy to see because of the washed out appearance of that screen. I was going to upgrade my transponder this year to the 330ES and use my 796 to supply GPS data to take full advantage of my GDL 39. With the info in this thread, that won't be happening. I wonder if there are any other solutions with a different make of Xponder (Trig)? |
Folks there is no compliant way to use NMEA to drive an ES transponder. The data required to fill out the ES data set does not exist in the NMEA protocol.
Steer clear of any ES or UAT solution that claims to be able to use NMEA.... |
What data is missing? error and resolution values?
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The requirements are listed in this document: http://www.faa.gov/documentLibrary/m...C%2020-165.pdf |
In my 696 I have the option in the setup menu of using only the GDL-39 input or GDL-39 and TIS from the 330. TIS traffic where I'm located in the Portland area has never worked very well and still doesn't. I wouldn't want to rely on TIS traffic if it's the same in other coverage areas.
I just shipped my 330 back for the ADS-B upgrade last week and looking forward to having great traffic coverage soon. Fortunately I just happen to have a 430W in my airplane to provide a location to the 330. Tomorrow the 430W gets the latest 5.01 software upgrade so it will be fully compliant. Thanks to G3Xpert on his help with the 330 upgrade. Now my RV-8 buddy Randy with the GDL will get the benefit by flying next to me. As quoted from the local Garmin rep, "he will be a parasite on my hockey puck"! By being within my 15 mile range (hockey puck) he'll enjoy traffic without upgrading to ADS-B out. So there you go guys, no need to upgrade to ADS-B out if your flying buddies do instead. |
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Not sure because I don't have a manual for the 330ES.
For the GTX23ES the protocol is Garmin's "ADS-B" protocol on the RS232 serial port #2. It is my understanding that the GTX23ES and the GTX330ES are very similar but one is marketed for the certified world and one is only for experimental and light sport use. That being said, most likely they need the same info to work. |
Thanks Brian.
I know my standard 330 setup is rs232 to and from the GDU375. I'll have to look for the manual for the ES and confirm. |
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