M20C GNX 375

[Trenton W]

Hello all,

I am a soon to be Mooney M20C owner, (picking it up Friday). It is in desperate need of some panel upgrades. I am considering a GNX 375 for the ads-b/transponder and GPS. However, it currently has a STEC-30 I would like to keep for now. Does the GNX 375 have the capability to connect directly to the STEC-30 or is a G5 required also, or another converter of some sort? It is currently connected to an old Garmin 150xl with GPSS adaptor. 

Thank you!

-Trent 

[Yetti]

I just had that quoted.  Stec 30 is in plane.   The work was for Install two 275s and a GNX375  From the shop "I am not aware of any additional adapter needed for the STEC30. We have done a few and only time an adapter is needed is with the G5s. "

[Trenton W]

1 hour ago, Yetti said:

I just had that quoted.  Stec 30 is in plane.   The work was for Install two 275s and a GNX375  From the shop "I am not aware of any additional adapter needed for the STEC30. We have done a few and only time an adapter is needed is with the G5s. "

How much was that quote roughly? I haven't got an install quote yet. The 275s are certainly what I would want but they are proud of them!

[Ragsf15e]

9 hours ago, Yetti said:

I just had that quoted.  Stec 30 is in plane.   The work was for Install two 275s and a GNX375  From the shop "I am not aware of any additional adapter needed for the STEC30. We have done a few and only time an adapter is needed is with the G5s. "

@Trenton W
@Yetti

sorry, I should read better.  If you have a gpss, it should work.  What is it currently using as a heading bug ? Do you have an hsi?

 Gpss will translate from the -375 to the stec.

[Trenton W]

8 hours ago, Ragsf15e said:

@Trenton W
@Yetti

sorry, I should read better.  If you have a gpss, it should work.  What is it currently using as a heading bug ? Do you have an hsi?

 Gpss will translate from the -375 to the stec.

[Ragsf15e]

2 hours ago, Trenton W said:

You’ll need to get a real avionics place to be sure, but the gpss should be fine between the-375 and the stec30.

[LANCECASPER]

21 hours ago, Trenton W said:

Hello all,

I am a soon to be Mooney M20C owner, (picking it up Friday). It is in desperate need of some panel upgrades. I am considering a GNX 375 for the ads-b/transponder and GPS. However, it currently has a STEC-30 I would like to keep for now. Does the GNX 375 have the capability to connect directly to the STEC-30 or is a G5 required also, or another converter of some sort? It is currently connected to an old Garmin 150xl with GPSS adaptor. 

Thank you!

-Trent 

The STEC is a rate based autopilot and gets its info from the STEC turn coordinator so you don't need a G5. The heading bug you have should still work.