No GPS with simplertk2b and antenna

GPS / RTK / GNSS
1

Hi. I work in program AOGPS. When I put ordinary low cost small antenna, it finds my locations and works normally, but when I connect real antenna (BT-147) via simplertk2b ardusimple board, it only sends NMEA messages but there is no GPS. I can’t get it what is making problem here. I’m trying to simulate work with real antenna and simplertk2b board. Thanks…

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2

Which NMEA messages? You need GGA and VTG?

3

There are some words and numbers: GNGSA, GPGSV, NV 37 etc…
Similar is with low cost small antenna, there are also GPGGA, GPRMC, N53 etc…

But with small antenna, there is shown location but with real antenna, no location…
I don’t know which exactly messages I need… Possibly ADV, GGA, VTG, PTNL,…

4

At minimum you need GGA. If you want to use GPS speed then also VTG. The rest should be disabled so that you don’t overload AoG’s nmea parser.

5

How can I disable it?

6

The arduSimple boards use the F9P by uBlox so you have to use the u-center software from them to change configuration & update firmware. It’s can be confusing using their software as there are a lot of settings & options. It might be best to use Andreas’ saved configuration.

2 Likes
7

I’ll try. Thank you for your replies and help :slight_smile: