MountainU2
Member
Hi All-
My old KT76A finally gave up the ghost a few weeks ago, and so I bought a KT74 to replace it. I was sold by the whole ?slide-in replacement!? idea. Plus, since I have a GTN650, I liked that it?ll get me 2020 compliant with minimal headache.
Of course, ?slide-in? means ?it fits in the tray, but you need to wire a bunch of stuff and your ball and rod antenna won?t work and hey do you have an R400 cable? because you need one of those...?
So I figured, no biggie. I knew I?d have to do some wiring, of course. I?ll just look in the manual and... Oh. No installation manual. Awesome.
So, has anyone done this? It seems like I need:
-Two wires:
(1) RS232 FROM the 650 to the main connector on the KT74, and
(2) RS232 OUT from the 74 to go to the 650 to display traffic. I know there?s other stuff like the ADIRS out on the second connector, but I don?t want to change the tray, and I?ve read on other forums the 232 out will provide info to the 650. I know this won?t display ALL traffic (TIS-A only?), but that?s fine. I use a Stratus 2S with Foreflight for traffic and weather. I don?t want the altitude alerts either.
-A new coax cable. No idea how to check mine to see if it?s the 400, but it was installed around 1990, so I?m pretty sure it?s not.
-A blade-type antenna like the KA 61
So am I on the right track? This is my first avionics install, so I expect it to take a lot more time than it would for a smart person, but I?d really like to try and do it myself. A manual would make it easier, but Bendix is stingy with those unless you?re a dealer.
Thanks for reading. Fire away.
My old KT76A finally gave up the ghost a few weeks ago, and so I bought a KT74 to replace it. I was sold by the whole ?slide-in replacement!? idea. Plus, since I have a GTN650, I liked that it?ll get me 2020 compliant with minimal headache.
Of course, ?slide-in? means ?it fits in the tray, but you need to wire a bunch of stuff and your ball and rod antenna won?t work and hey do you have an R400 cable? because you need one of those...?
So I figured, no biggie. I knew I?d have to do some wiring, of course. I?ll just look in the manual and... Oh. No installation manual. Awesome.
So, has anyone done this? It seems like I need:
-Two wires:
(1) RS232 FROM the 650 to the main connector on the KT74, and
(2) RS232 OUT from the 74 to go to the 650 to display traffic. I know there?s other stuff like the ADIRS out on the second connector, but I don?t want to change the tray, and I?ve read on other forums the 232 out will provide info to the 650. I know this won?t display ALL traffic (TIS-A only?), but that?s fine. I use a Stratus 2S with Foreflight for traffic and weather. I don?t want the altitude alerts either.
-A new coax cable. No idea how to check mine to see if it?s the 400, but it was installed around 1990, so I?m pretty sure it?s not.
-A blade-type antenna like the KA 61
So am I on the right track? This is my first avionics install, so I expect it to take a lot more time than it would for a smart person, but I?d really like to try and do it myself. A manual would make it easier, but Bendix is stingy with those unless you?re a dealer.
Thanks for reading. Fire away.