@ddegn thank you for your detailed reply.
We will participate in an event where autonomous aircrafts are competing in various sub-races. This year is our 3 rd time.
Last two years, we just used Holybro 433 MHz module with Pixhawk 2.4.8. Now, we are upgrade to Cube Orange and we aslo want to upgrade our telemetry systems.
Also we don’t want to buy RFD900 like modules because they are expensive (and quite too much range for us). Besides of that, we have ongoing projects for devoloping our own flight control and telemetry systems. So we don’t want to invest in RFD 900, or systems like it.
I think that SIYI’s 2.4G Datalink is quite good for It’s price and features.
Even though you are increasing frequency, that 2.4 GHz system might work better than your 433 HHz modules because it uses frequency hopping. The 2.4GHz system might also work better if it uses ha higher power transmitter. The 2.4 GHz system uses 200 mW transmitter power. You will want to make sure this power level is legal in your area.
That’s what I thought too. Also a system with 2.4 GHz and 200 mW output complies with our laws.
Do you know what sort of range do you get with your 433 MHz radios?
We got max. of 2.5 km, I think.
What other radio systems are you using on your aircraft?
FrSky X9D Plus 2019, R9 system and R9SX receiver.
One thing I find odd about the SIYI radios is the base unit has a female USB type A connector on it. It seems odd they used this connector. You’ll need some sort of adapter to connect it to a PC.
We got same problem with an other component in past, so we have a good solution for it.