AMPS Power Cycling when NMEA Waypoint Received

Discussion related to the Garmin Montana 7x0 series GPSr
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Remotruker
Posts: 6
Joined: Fri Jun 25, 2021 4:31 am

AMPS Power Cycling when NMEA Waypoint Received

Unread post by Remotruker »

I have the 750i in the AMPS mount and connected to a HAM Radio receiving waypoints(GSA, GSV). Every time a new waypoint is created, the power drops, unit beeps(lost power beep), then returns to normal. If I have the power behavior set to prompt, the screen popps up, then disappears again.

Brown-out maybe?
Firmware bug?
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GPSrChive
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Joined: Fri Jan 20, 2017 11:29 pm

Re: AMPS Power Cycling when NMEA Waypoint Received

Unread post by GPSrChive »

First, I find this subject very intriguing and would like to know more about what equipment you are using to achieve this!

Second, can you please take a short video of this behavior and share it?

Thank You!
Remotruker
Posts: 6
Joined: Fri Jun 25, 2021 4:31 am

Re: AMPS Power Cycling when NMEA Waypoint Received

Unread post by Remotruker »

I'm using a MTT4BT from Byonics.

Byonics TinyTrack user group on Facebook

No video at the moment of my unit as it is pending install to my ATV or Motorcycle. There are others doing it with different Garmin products. They are not having the issue however.

When I get a chance I'll get a video!
lewi3069
Posts: 8
Joined: Tue Oct 05, 2021 2:18 pm

Re: AMPS Power Cycling when NMEA Waypoint Received

Unread post by lewi3069 »

To confirm, it sounds like this does work with the AMPS mount? There is another post viewtopic.php?f=66&t=1310 discussing the ability.
Remotruker
Posts: 6
Joined: Fri Jun 25, 2021 4:31 am

Re: AMPS Power Cycling when NMEA Waypoint Received

Unread post by Remotruker »

Confirmed!

Both posts were started by me.

I couldn’t get it to work over usb, but AMPS does work!
lewi3069
Posts: 8
Joined: Tue Oct 05, 2021 2:18 pm

Re: AMPS Power Cycling when NMEA Waypoint Received

Unread post by lewi3069 »

Well I found a 5 wire/pin micro USB and spliced it in and... it works!
Items used:

Radio Yaesu FT5D:

processed.jpeg

Serial Connection:

processed2.jpeg

Splicing in the micro USB:

processed3.jpeg

All of it together:

processed4.jpeg

Showing up in waypoints:

processed5.jpeg

Showing up on the map:

processed6.jpeg
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Remotruker
Posts: 6
Joined: Fri Jun 25, 2021 4:31 am

Re: AMPS Power Cycling when NMEA Waypoint Received

Unread post by Remotruker »

Win!!
lewi3069
Posts: 8
Joined: Tue Oct 05, 2021 2:18 pm

Re: AMPS Power Cycling when NMEA Waypoint Received

Unread post by lewi3069 »

If anyone is interested I can build and ship an assembled cable with the micro USB and DB9 ends installed. That way you just need to provide power and connect your GPS and Radio.
toadie
Posts: 15
Joined: Mon Jan 10, 2022 6:08 pm

Re: AMPS Power Cycling when NMEA Waypoint Received

Unread post by toadie »

so what was causing the brownouts?
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