"OK, thank you.
Can you recommend me any 433 Mhz xbee module so I can link ground station to the arduino module which is in the plane?
I have been searching for any 433Mhz device, but all i have seen seems to be limited to few…"
"OK, thank you for your answer. Another question: with 900, I would be working in 10km range, isn't it?
I would need to work with 20 km, at least. Do you know if I can add a xtend 900 to xbee 900 and work sucessfully with…"
"Thank for your answer, Johann,
OK, but with 2,4 I would work with no long range, wouldn't I? The main problem is that I need to send and receive data from xbee ground station to xbee air working in 20km range, more or less.
To be frank but honest the 868s is dead! Unless you nought a pair before lastyear June you will have no luck iv been doing research with Martin and been in contact with digi , the duty cycle has been changed and is no longer a code block but…"
I have read some posts about xbee 868 and xsc, but I am not sure about disadvantages which each one.
I have read about 868 duty cycle problem, cooling, etc. As far as i am concerned, it seems duty cycle is solved with 9600 limit…"
"Gentlemen, I too ordered the APM (arduPilot Mega) and IMU shield "oilpan" and a ardupilot shield v2, (MPXV5004DP)'. I have been searching for "days" it seems to find out how I was going to cable up my shield v2 airspeed…"
"I have seen mixed reports about using 2.4 ghz radios with 2.4 ghz telemetry, I would not but the choice is yours, just don't like the idea of any issues meaning I lost control of my plane. At this point you will find it hard to get an Xbee to…"
Thanks for your info its been very helpful. I found the list I made in my original post from the same link that you sent me. I only posted it in order to clarify what I was planning to order, as I thought I needed items that, as…"
"1) you don't need a magnetometer for an airplane or the FTDI cable at all. Also, you're confusing ArduPilotMega with the original ArduPilot (which uses that shield you mention; you don't need that with APM). If you want airspeed, get…"