Point to multipoint RTK corrections using Holybro Microhard P900

GPS/GNSS
1

Hi everyone,

We’ve got a whole bunch of old RTK Facet L-band units that I’d like to set up with one unit as a base station broadcasting corrections to multiple rovers (local, line of site over radio.) Does anyone have any experience using the Holybro P900 Microhard (haha) radios in point-to-multipoint configuration for RTCM corrections straight out of a Facet? Looking through the Holybro documentation, it seems possible.

I’ve had good success in the past using the Holybro SIK LoRa radios (from Sparkfun) to do point-to-point corrections from one Facet set as base to another Facet set as rover, but they do not seem to be capable of being set as point-to-multipoint. (I’ve also experimented with some EByte E32900T30D radios but could never get them to work with the RTCM binary string).

Thanks!

Luke.

Holybro P900 radio link:

2

The LoRaSerial Kit we sell supports multipoint :slight_smile:

3

Thanks for your response, Russell. I’ve read on this forum that those Sparkfun LoRa radios have difficulty transmitting the full RTCM packets. A colleague of mine has three of them set to point-to-multipoint, and says that they intermittently will revert back to point-to-point configuration without warning. I’m going to borrow them maybe tomorrow and try them out – any words of wisdom / (and I don’t mean to sound like a jerk), but are there any successful use cases with them set point-to-multipoint transmitting corrections from one base to multiple rovers out there?