Originally Posted by
sbrault
Shawn,
I have dual 5600’s, a GTN 750 with remote GTX 32 and a Navworx ADSB600B. Based on your comment above, it seems that your 261/472 solution replacing my 32/600B could work well when the 472 becomes available again. I spoke with Rob a few months ago about that same plan and I’ve been patiently waiting for the 472 to become available again. In the meantime, I’ve come up with another solution that might be even better (and I won’t have to continue to wait for the 472) but I’d appreciate your help in determining if it will work.
My understanding is that the 472 is essentially the same as a uAvionix ECHO (presumably without the 978 transmitter, nor txpdr sniffer). My thought is that the sniffer in the ECHO is a non-starter as one will be much better off with a hardwired connection to the txpdr, particularly in a non-radar environment. But the ECHO (assuming the relevant squawk code, pressure altitude, etc is hard wired from the txpdr) has the advantage of adding a second transmitter on the 978 frequency to supplement the 1090 transmission from the 261. This will be particularly useful in a non-radar environment where many planes carry 978 receivers if not transmitters, thereby allowing them to see the ECHO’s transmissions.
So, my solution involves replacing my GTX32 with the Dynon 261, thereby getting 1090ES OUT using the GTN750 for position source. Then feed squawk info from the 261 to the ECHO (replacing the 600B) thereby getting 978 UAT OUT and feeding both 978 & 1090 IN to the 5600’s. GPS position source for the ECHO could also be obtained from the GTN750 provided the 261 is able to transmit the squawk info at 115.2K baud, otherwise I will have to install the uAvionix SkyFyx (transmitting at 115.2K baud) so that at least one of the two ECHO com ports can provide the 5600’s with traffic and weather at 115.2k baud, since the GTN’s transmission speed is limited to 9.6K. Obviously, I will also need to hook up the suppression pins to prevent interference, but the FAA has made it clear that transmissions on both frequencies from a single aircraft is okay provided they are both transmitting the same identification.
So, I have three questions for you:
1) is this a viable solution?
2) will the 261 transmit the required info to the ECHO so it can transmit a 2020 compliant signal providing me with dual band out?
3) will the transmission (in #2 above) be at 115.2 k baud, or do I need the SkyFyx?
Thanks,
Steve