Teejet matrix pro 570gs

[Bill Turtle]

I have a Teejet matrix on my sprayer for section control but this year the trace on the screen is wandering so quickly as to be completely inaccurate for section control running into the headland. Last week it was about 30m. Out after 80 minutes. Has anyone else had this problem?
GNSS receiver configuration is GPS,SBAS.

 

[Robt]

Where are you? SBAS isn't desgined for Uk, I believe it's for Japan. Can you try GPS then Egnos?

 

[David6330]

The UK does use SBAS. We refer to it as EGNOS.

SBAS is the common technical name for the system but each region uses their unique name to differentiate from the others. The EU's SBAS program is called EGNOS, the US is WAAS etc. Japan's is MSAS

https://www.egnos-portal.eu/discover-egnos/about-egnos/what-sbas

 

[Bill Turtle]

I am in Essex; I will have another look at the GPS info tomorrow. I had a previous version of Teejet Matrix on my last sprayer which was pretty well faultless. Can this type of problem be caused by not having differential correction data?

 

[Bill Turtle]

Under SBAS it says (e.g. EGNOS,GAGAN,MSAS,SDCM,WAAS)

 

[Bill Turtle]

 

[Northern farmer]

You do not seem to have EGNOS corrections active. Did you configure your PRN-selection to automatic and left the receiver under open sky (open to the south, including horizon)?

30 m off sounds impossible even for standalone GPS with 9 satellites if everything is working fine.

 

[Bill Turtle]

I think I may have found the reason for my recent problems. Somewhat embarrassing, but whilst clambering around on the sprayer I noticed that the mag mounted receiver on the roof of the cab had been knocked out of position, so that it had reattached itself to the rear face of its mounting; in a vertical plane rather than a horizontal plane. Problem may be solved!