RTK Fix ( LC29HDAMD )

IoT Modules GNSS Module
1

Hello all, i need a hand with the RTK Correction.

Basically i got this module (LC29HDAMD ) which i wanna do the rtk correction but for now i only could find out how to do the fix of the gps.

I asked the quectel technical support in order to give me the NTRIP Client credentials and they gave me in order to try, so i followed the guide and connected to NTRIP client, but im only achieving the gps fix but i couldnt do the RTK, consider that im using a single band antenna, and a repeater for the satellites ( cus im in a closed place at work , but with this equipment i can avoid going outside ). I dont know if it could be the antenna, but i dont think since i get the gps fix i assume.

What else i could try in order to do the RTK Correction? there is something else beside connecting to the NTRIP Client that im missing?

Thank you in advance, in case u need more informations or screenshots let me know.

2

please give more detailed info…
the module can achieve rtk fix althought in L1 only band but need an open sky or at least 5 valid p r n from a same constellation.
The ntrip client must be set at a nearest (almost 50km) point and the caster must emit rtcm related msm compatible for the module input format.
So watch the GGA and RMC sentences spit by LC29HDA

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and
rtcm info of the specific correction_point.

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4

ok , considering gps 3d fix , cannot see pic;
need to exam ntrip…not only 1005 but at least 10x7 or 10x4 msm etc…given by the host.
So try centipede as a joke with c and c credenzial and watch if rtk float happen…

5

There are multiple of them, i thought only needed were 1005 and 1006, but there are the others too given by host.

I didnt understand the second part, so u suggest me to use different credentials? and see with which one the rtk works? ( so i got difference host places or so ? i suppose (?) beside that what can i try?

Btw it makes me reply each 30 minutes

6

Of course, I assume the Team has provided you with their service credentials (which should be a paid sv),
ex

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and in any case, to dispel any doubts, you should try the alternatives. As an example, I suggested Centipede, which transmits from private user stations with excellent instrumentation (usually Ubx FP9), so you can get a clue as to how to resolve it.
Note that RTK corrections involves resolving the ambiguity, and fewer calculations are required for a dual-band L1 and L5 receiver than for a single L1.
Also, a useful tool for better visualization of the stream is STRSVR from rtklib.
Also an excellent ntrip client app is LEFEBURE for android.
Out of curiosity, in what part of the world are you?
The forum has a questionable, pragmatic and paradoxical policy; to say the least, only 15 minutes are required to reply for me!