Neo-M9N RTK capabilities

A quick read of the documentation for the M9N seems to tell me that if I supply a source of RTCM data to the Rx port on the M9N that it will produce the cm level precision results. I’m guessing that I might have to do some Ucenter tweaking to get things to work, but give me some advice. Workable? I am just setting up a base station with a new ZED-F9P to generate the correction data, and I have several M9N units already in place. It would be great to just add telemetry radios to them and be able to see the results. Plus I save some money.

The NEO-M9N does not support RTK or high precision GNSS. Can you link to the source docs that state it is?

Here’s the datasheet I’m looking at: https://content.u-blox.com/sites/defaul … 014285.pdf

Hi,

The NEO-M9N does support RTCM input, but can’t generate RTCM. It is a single band GNSS, so you won’t get to cm accuracy with RTCM. But it should still give you a significant improvement over normal GNSS + SBAS.

I’ll try and find time to run a quick test.

Best wishes,

Paul

Humm… Pretty inconclusive I’m afraid…

Like Sparky says, the M9N is not RTK-capable. So all you can hope to do is improve on the normal DGNSS accuracy.

With four constellations GNSS + SBAS, I’m seeing horizontal accuracy of around 0.6m.

When I enable RTCM (NTRIP Client from Skylark, through u-center), I can see the RTCM message count increasing but the horizontal accuracy is still around 0.6m…

No magic wand… Sorry!

The NEO-M8P is RTK-capable, and is available (today) at 32%-off:

https://www.sparkfun.com/products/15005

https://portal.u-blox.com/s/question/0D … -ublox-m9n

Tightened, but a bit contrived, DGNSS not RTK. CEP99 sub metre.

On the other hand I’d generate raw measurements and …