Hi, I am planning on making a telemetry data transmitter for my rocket. I can't figure out what module to use. It needs to be able to transmit over 3000m in open air. Any help is appreciated
maybe you can use a GSM module, for send or receive sms with the arduino
LoRa modules currently have the distance record: over 700 km for balloons. Low data rates, though.
LoRa would offer the best guarantee of the range at a reasonable data rate.
A UHF LoRa device, driven with a humble Pro Mini 8Mhz, can send a 16byte packet about every 7mS, which is an average data throughput of 18,500bps. Increase the packet size to 255bytes and the transmit time is 39mS and data throughput rises to 52,000bps.
Thats from real world practical tests, not a bit of theory from a datasheet.
Line of sight range on those settings would be circa 40km @ 10mW.
I bought a couple of si4438 for this purpose....
So far, no success.
I guess using si4463 or other modules will give you better compatibility.
By the way, 3km ? Wow....