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GTR20 remote trouble shooting help.

L

Larry DeCamp

Well Known Member
The little green light blinks, the active ( 122.750 ) and standby freq’s show on G3x. Bose A20 headset plugged into GA sockets. Handheld vhf 122.750 nearby . The hand held causes no response in Bose headset and the GTR20 causes no response in the handheld. Is there a COM troubleshooting for dummies checklist ?
 
Larry DeCamp said:
The little green light blinks, the active ( 122.750 ) and standby freq’s show on G3x. Bose A20 headset plugged into GA sockets. Handheld vhf 122.750 nearby . The hand held causes no response in Bose headset and the GTR20 causes no response in the handheld. Is there a COM troubleshooting for dummies checklist ?
Click to expand...
G3Xt IM pg 651, CAN-bus or RS232.
If RS232, format is important.

Good luck
 
Thanks Walt, connects on antenna and at the radio feel physically secure. How to test connection quality and continuity ? Apologies, I am a gearhead.
 
Larry DeCamp said:
My rev AU does not have page numbers. How do find 651.
Click to expand...
The software you are using to view the PDF file will give you the absolute page number. The 651st page of the G3X installation manual (revision AU) is labeled as page 30-166 in the document, and is the start of section 30.4.27.
 
Larry DeCamp said:
Thanks Walt, connects on antenna and at the radio feel physically secure. How to test connection quality and continuity ? Apologies, I am a gearhead.
Click to expand...
A simple ohm meter to test for continuity (end to end) and that the center is not shorted to the shield.
 
Also try another, non Bose headset. I've experienced issues with a Bose plugged into an older style receptical where a Light speed worked. Slight difference in plug geometry.
 
Walt said:
A simple ohm meter to test for continuity (end to end) and that the center is not shorted to the shield.
Click to expand...
Walt,
The antenna cable has good continuity from radio to antenna. How do I determine :
Are the connections at the antenna and radio are good
Is the radio powering a signal out
Is the radio seeing a signal in from the hand held

The hand held not playing a transmission from the GTR20 points to PTT or radio if the antenna is functional. The handheld will play wx channel so it probably works.
Any help from others welcome also...Larry
PS, I have contacted the local HAM Radio organization to see if anyone with knowledge and test equipment would like to share their expertise.
I will also try a DC headset to eliminate the Bose as a cause.
 
I am trying to use a Sportys PJ2+ Com to confirm my Garmin 20R is working. I have confirmed the pin outs are connected to the proper terminals in the headset jacks. Pilot and pax jacks are wired per schematic. A lemo jack is added to the pilot jack per schematic.
The Garmin 20 and the PJ2+ both indicate tx and rx by the respective G3x screen and the led’s on the handheld. The Garmin antenna has continuity. But,
I have never gotten an audible response on the Garmin with either Bose or DClark headset. However, on more than one occasion, the handheld recetved transmission from Garmin .THE HANDHELD DOES NOT ALWAYS PLAY A GRMIN TRANS MISSION.
This points the finger at the Handheld antenna connection that is discussed on the Sportys website.
Is there a way to eliminate the Handheld antenna concern ? I do not have other antennas and the plane is home in my workshop.
 
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