At this moment I have digged up an old Telemetry system which I had bought back in the 90's based on a central unit for 17 sensors and a 433mhz transmission which did not give me the promised range. I was lucky to find the software too on an old 486 laptop which seems to run on an XP machine.
Now I want to try a smal test setup if all is still working and if it will work on a new laptop. Is so, then I want to get a new TX/RX system, I do have several options in this.
A modulair interface you can setup in every way you want, like this:
On races we can not use this but I do test a lot of engines with a manufacturer and this can be helpfull.