chris mitchell
Well Known Member
I have just replaced an old KT76A transponder with a Trig TT-31, to provide a mode S device. It occurs to me that I could also enable ADS-B by connecting the TT31 to a suitable GPS.
The aircraft has both a Flymap L and a KLN89B. The Flymap can be used but would need more software (about USD400).
So I wondered about the KLN89B. It has RS232 ports in and out. What I don't know is whether it will output data in a format that the Trig can use?
The alternatives are:
Do nothing until its mandated; - impact on safety;
Get another GPS to replace the KLN89 B (which is rather old); - cost;
Stump up the cash for the software update on the Flymap; - cost;
Wait for the Trig TN72 (a standalone GPS unit specifically to provide the ADSB function); - cost (probably around 5-600USD);
So - if the KLN89B can do the job, for the cost of 2 feet of wire and a few connectors, its my preferred solution. If any knows or better still has actually done it, I'd be grateful for details.
Many thanks
Chris
The aircraft has both a Flymap L and a KLN89B. The Flymap can be used but would need more software (about USD400).
So I wondered about the KLN89B. It has RS232 ports in and out. What I don't know is whether it will output data in a format that the Trig can use?
The alternatives are:
Do nothing until its mandated; - impact on safety;
Get another GPS to replace the KLN89 B (which is rather old); - cost;
Stump up the cash for the software update on the Flymap; - cost;
Wait for the Trig TN72 (a standalone GPS unit specifically to provide the ADSB function); - cost (probably around 5-600USD);
So - if the KLN89B can do the job, for the cost of 2 feet of wire and a few connectors, its my preferred solution. If any knows or better still has actually done it, I'd be grateful for details.
Many thanks
Chris