Garmin GPS 18 LVC RTCM wiring

wb2ers1 · March 29, 2016, 8:41pm

Skyler,

Good afternoon.

I saw your post regarding the RTCM-GPS-18x LVC question.

I would use the app_rpt site but cannot seem to get registered.

I have tried many times to get registered on the app_rpt users but it always comes back no such user!!!

Here’s the question:

I have two of the same RTCM and Garmin GPS 18x LVC.

I have been completely unable to get either to work.

I followed your wiring:

RTCM GPS 18x LVC

6 GRX <-- Rx Data 6 Green

7 GPPS <-- Pulse Output 1 Yellow

8 GND Ground 3 Black

8 GND Ground 5 Black

13 +5V -->Vin 2 Red

14 GTX --> TX Data 4 White

No joy. Did you get yours working?

Anything you can share?

I have a feeling that the Garmin’s have been reprogrammed to something other than factory default 4800 in the PGRMF.

Tnx,

Mark DuMoulin Sr.

WB2ERS

800-410-3130

Electricity440 · March 29, 2016, 11:42pm

Hi Mark,

Mine seems to be working, and the wiring is as above.

Here is my RTCM GPS configuration

8 - GPS Data Protocol (0=NMEA, 1=TSIP) (0)

9 - GPS Serial Polarity (0=Non-Inverted, 1=Inverted) (0)

10 - GPS PPS Polarity (0=Non-Inverted, 1=Inverted, 2=NONE) (1)

11 - GPS Baud Rate (4800)

Does it match?

This is what I get on boot:

GPS signal acquired, number of satellites in view = 11
03/29/2016 23:37:20.300 Warning: GPS Data time period elapsed
03/29/2016 23:37:20.300 Warning: GPS PPS Signal time period elapsed
03/29/2016 23:38:06.980 Time now syncronized to GPS

73,

Skyler

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On Tue, Mar 29, 2016 at 2:41 PM, Mark DuMoulin @ WB2ERS wb2ers@metcom.com wrote: