New Garmin GNC 355 GPS/COM, July 2019

[Waiex-guy]

With a G3X and GTR20, can this GNC-355 be added without also adding a GMA-345R?

[g3xpert]

Originally Posted by maus92

Could we perhaps use the "intercom" from a GTR20?

Hello Charley (and Waiex-guy),

While some may have had some success using using switches and other components to add a second radio to an installation with a GTR 200 or GTR 20 radio with intercom, it is not something we recommend.

Pretty sure you would enjoy a GMA 245/245R audio panel if you installed one. I only have a single GTR 200 COM radio (and a GNX 375), and I still installed a GMA 245 for the many great features, dedicated buttons, dedicated intercom/music volume knobs, and Bluetooth music/phone/camera support it provides. It is small, light, and a pleasure to use. I may add a GTR 20 second radio at some point, and I am all set with having the audio panel to use with it if I do.



Thanks,
Steve

[PaigeHoffart]

Too bad it's twice as long as the GNC-300XL.

[444TX]

Steve,

You say the 355 can receive and display the data, but can it control the remote transponder functions?

George Meketa

Originally Posted by g3xpert

Hello Sean,

Yes, the GNC 355 can receive and display ADS-B traffic and weather from the GTX 45R/345/345R and provide the WAAS GPS position source data needed by these transponders for ADS-B Out.

Thanks,
Steve

[g3xpert]

Originally Posted by 444TX

Steve,

You say the 355 can receive and display the data, but can it control the remote transponder functions?

George Meketa

Hello George,

No, the GNC 355 does not control a remote transponder.

Thanks,
Steve

[Raiz]

What is the normal and peak current consumption of the GNC 355 at 14 volts?

[g3xpert]

Originally Posted by Raiz

What is the normal and peak current consumption of the GNC 355 at 14 volts?

Hello Raiz,

Here is the power consumption for all 3 of the new models.

GPS 175 GPS Navigator
14V: Typical 0.6A, Maximum 0.9A
28V: Typical 0.3A, Maximum 0.6A

GNC 355 GPS Navigator with COM radio
GPS/Main Connector
14V: Typical 0.6A, Maximum 0.9A
28V: Typical 0.3A, Maximum 0.6A
COM Connector
14V: Typical 1.8A, Maximum 6.0A
28V: Typical 0.9A, Maximum 2.8A

GNX 375 GPS Navigator with ADS-B In/Out 250W 1090ES Transponder
14V: Typical 1.2A, Maximum 1.8A
28V: Typical 0.6A, Maximum 0.9A

Thanks,
Steve

[Raiz]

Thanks once more

[Fly2KiteSurf]

Originally Posted by g3xpert

Hello George,

No, the GNC 355 does not control a remote transponder.

Thanks,
Steve

Post #14 (pasted below) seems to contradict what's stated above:

Hello Sean,

Yes, the GNC 355 can receive and display ADS-B traffic and weather from the GTX 45R/345/345R and provide the WAAS GPS position source data needed by these transponders for ADS-B Out.

Thanks,
Steve

[g3xpert]

Originally Posted by Fly2KiteSurf

Post #14 (pasted below) seems to contradict what's stated above:

Hello Sean,

Yes, the GNC 355 can receive and display ADS-B traffic and weather from the GTX 45R/345/345R and provide the WAAS GPS position source data needed by these transponders for ADS-B Out.

Thanks,
Steve

Hello Sean,

Receiving and displaying ADS-B traffic and weather from a transponder and controlling that transponder are two very different things.

Thanks,
Steve