Hi dear forumer 
Im searcing a Hood wireless module abile to achieve the best distante performance
I have found this 2 module
SX1272 LoRa
And
XBee-PRO 900HP RF Module
What is the best?
And, there is better module to achieve better distance? (that module can trasmit between 20 and 30 km, if possibile i need more)
Thank you all
"module can trasmit between 20 and 30 km, if possibile i need more"
"Common used GPS are locked to 30 km and mach1, and over that value, it dont work"
What are you trying to do...
I have explained it in the GPS thread
Im building a High altitude helium balloon, it can reach little more than 45 km stand to the calculation
I need to know position (gps) and trasmit it to land (long range trasmitter).
This 2 item will be also useful for other high altitude modellism project
Can you help me now? 
suofford:
I have explained it in the GPS thread
Im building a High altitude helium balloon, it can reach little more than 45 km stand to the calculation
I need to know position (gps) and trasmit it to land (long range trasmitter).
This 2 item will be also useful for other high altitude modellism project
Can you help me now?
https://forum.arduino.cc/index.php?topic=533260.0
"Now Im build a new rocket project, where gps is necessaire for tracking altitude and position data"
Time to put it where the sun doesn't shine, and light it.
Leo..
Yes! Also a model rocket projet!
Where is the problem ??
Ad i told up in this post...
"This 2 item will be also useful for other high altitude modellism project :)"
Rocket model or helium balloon are illegal??
Now can you help me ? Or there is other question????
Thank you very much!
In this day and age it would be better to identify yourself and/or group before asking such questions.
"Rockets", "30-45Km altitude" and "mach1" does not smell like a hobby project.
Leo..
Haha haha
Please!!! You make me laught!!!
Watch mine site below, balloon story section, you will find info about me and my balloon project, rocket project is still under development
Can i have a serious answer now???
Do some google searches about "lora radio balloon" There are a lot of people using it for that. Longest test that I know of was over 130km. Very low power and just flat out works as long as you have line of site.
You probably need to buy a commercial complete radio kit - in most countries you cannot just transmitt signals from home made gear over long distances -there are laws about it
Where i can found that kit?
Do you know some mark or model?
That kit are abile to trasmit at long distance like 40 km?