I am attempting to use 2 of these modules (one base and one rover) for RTCM. I do not have internet access in the location of these devices and the recommended radios are out of stock everywhere. Is there a protocol I should look for in replacement radios that is easy to implement? I have a 915MHz antenna on some boards that I could use if the firmware for these telemetry radios is open source but I am not sure if that will be as easy of a solution as I would like. The range between the Base and Rover should never be more than 700 ft, easy for the radio but too far for WiFi.
I think you just need something that will do TTL serial at 38400 baud, some 900MHz XBee’s would probably do the trick.
- I could be wrong, double check!
The default baud rate for the radio port is 57600: https://sparkfun.github.io/SparkFun_RTK … radio-port
Any serial radio should work assuming the link can pass ~600 bytes per second.