Garmin GTX 327 Serial Output to GPS?

[hish747]

Is the GTX 327 serial output sufficient to proved altitude data to a GPS or does this need to come directly from the encoder? I currently have a Narco AR850 encoder which doesn't have a serial interface. I was wondering whether it needs to be replace it with, something like a Trans Call with RS232 or will the GTX pass along the altitude from the Narco in serial format as the Trans Cal does?

 

[Ravioli]

My GTX327 feeds altitude out to my 430W using RS-232 OUT 1, pin 20.

 

[hish747]

Thanks Rob. Hope you are well. Btw, how do you like the 430 compared to the GX60? WAAS aside, is it much better?

 

[Ravioli]

I like the GNS series a lot. Two planes are 430W and the other is 430 (but will be gaining the W part early next year).

Graphics are obviously much nicer (and color) and there is a whole bunch of stuff it just "knows" if the datacards are up to date.

I don't know how fair the comparison is since I was pretty much a Direct To guy on the GX and now I've learned a lot more about the fancy "new" one. [Others will say the GNS isn't new]