Ardleigh RTK dual frequency multi GNSS base station live, and free to use.

A

arwooldridge

Member
ArdleighGBR0 RTK base station now transmitting live via internet on rtk2go.com. Use any NTRIP client.
Dual frequency GPS +glonass + Galileo +BDS
Access free. However I cannot guarrantee 100% uptime, but should be >= 99%
Battery backed up but reliant on landline internet connection.
I can supply sub £1000 dual frequency RTK receivers subscription free if using free NTRIP base station eg euref-ip.net ( 7 stations available over UK)
Requires only a mobile phone hotspot active to get the RTK corrections.
 
DanniAgro

DanniAgro

Member
Innovate UK
Presumably there is a way to use my own RTK receiver with your service? Your web site is rather opaque for a beginner to follow.
 
A

arwooldridge

Member
Hi,
First I should sat rtk2go.com is not my website but I believe run by the very good people who produce the SNIP caster software.
To answer your question, yes, follow your RTK receiver user instructions to use an NTRIP base station.
Caster IP is rtk2go.com
Caster port is 2101
Data Stream or Base station is ArdleighGBR0 ( the last character is a zero) or any other one listed at rtk2go.com:2101 there are hundreds world wide.
Username and password normally not required on free to use stations so leave blank.
However your RTK receiver may not be capable of receiving from the internet if it does not have a SIM card.
If it has an RTCM correction input serial port you would need a way to way to get internet data to this serial port.
It can be done using your mobile phone hotspot and an XBEE ESP32 and RS232 adapter for intstance. These are very low cost items and would fit in a very small box along with a 12 volt to 3.3 volt power supply. If there was a demand for these I could produce them or supply plans. ( but actually it's not a much bigger step to add in a Ublox ZED F9P eg Ardusimple RTK2B dual frequency multi GNSS receiver)
There are other ways, for instance run an NTRIP client (eg Lefebure NTRIP) app on your mobile phone or laptop ( bad luck if you have an iphone though! you will have to go via the hotspot route as there are no free NTRIP apps on iphone). You would then need a phone usb to RS232 serial adapter, or bluetooth to RS232 adapter.
Happy to help you set up with any of the above.
Anthony
 
Northern farmer

Northern farmer

Member
Location
North
DanniAgro said:
Presumably there is a way to use my own RTK receiver with your service? Your web site is rather opaque for a beginner to follow.
Click to expand...

Which website are you referring to?

If you are close enough to the arwooldridge base and your RTK receiver is activated for RTK and it accepts the RTCM 3.2 stream without the 1008 message, you should be fine.
 
A

arwooldridge

Member
Yes good point, Trimble receivers need message 1008 antenna details. A dummy message is sufficient ( so really they did not actually need it!) . If its a problem I can look to add this message with some code change to strsvr, or I think it can be done in SNIP.
 
Northern farmer

Northern farmer

Member
Location
North
Not only Trimble and it actually makes a difference even if an empty message is enough. If the base was from a specific brand, an empty message would not suffice.
 
A

arwooldridge

Member
Yes agreed there can be some problems mixing receiver types. I use Ublox ZED F9P for both base and receiver hence no problem as the biases are matched. They are cheap enough for a dual frequency Multi GNSS, and RTK lock takes seconds and is solid.
 
A

arwooldridge

Member
OK, now added message 1008 (with nul antenna none radome) and message 1033 to the ArdleighGBR0 rtk2go.com stream Please let me know if this works or not with any non Ublox receiver that expects these messages. This information with receiver type, and whether GPS, GPS+ Glonass, GPS+Glonass +Galileo, GPS+Glonass+Galileo+BDS, etc. will prove useful to fixing any problems.
 
A

arwooldridge

Member
A quick look at rtk2go.com:2101 yields one at 52.77N 2.16W near Stafford probably about 27 Km away.
That should work using dual frequency multi GNSS. But as an upgrade its not difficult to make your own base station useing the ZED F9P, for a neat example see https://agopengps.discourse.group/t/rtk-base-station-project-esprtk-simplertk2b-ntrip/1062 . The receiver is a bit simpler using the same F9P and an ESP32. three possible ways of doing this depending on the variant of ESP32 but not difficult. An Xbee ESP32 plugs straight onto the Ardusimple RTK2B F9P, or the RTK2B F9P can plug onto an arduino ESP32. Open source code for all methods are available. The ESP32 can connect via your mobile hotspot, or some connect to an ethernet router with mobile SIM in the tractor. The F9P ((eg ArduSimple RTK2B) are less than £200 each and ESP32's are very cheap.
 
J

JimWilson

Member
Arable Farmer
Location
Angus
OK, this isn't open source or free...

But it works, has been going for over 10 years, fully redundant servers and we answer the phones and reply to emails..

www.soilessentials.com

RTK Correction Service | SoilEssentials Precision Farming Solutions

Find out more about the RTK Correction Service from SoilEssentials. EssentialsNetRTK could be the more reliable, fully supported alternative to what you already have.
www.soilessentials.com

Jim
 
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