Re: [Paparazzi-devel] LONG RANGE data radios - what the best

[Rokas Adiklis]

Hi Eduardo,

9XTEND's are great radios, but I doubt they would work 50km+. Specs say 
max range is 64km, but only in ideal conditions: direct line of sight, 
high gain antennas, good weather, low data transmission speed and most 
probably you would need antenna trackers on GCS and on the aircraft. 
I've used these radios for up to 10 km without these prerequisites 
(standard antennas, no tracking, no direct line-of-sight, some trees 
around). Going further than 10km rendered connection inactive. Also, 
formally these should be illegal in EU.

In your case I would use GSM for communication. You need a "GSM to 
Serial data" type of device for the aircraft, and internet access 
(preferrably with fixed IP address) on your computer with "TCP to COM" 
type of software installed. GSM modem receives serial data from PPZ, 
tunnels it over TCP (GPRS/3G/4G) to your computer, where the recipient 
service passes this data to virtual COM port. The virtual COM port is 
the one configured in GCS as a "modem".

I haven't tried it myself, but intend to some time this year. 

This is the kind of device that I'm talking about: 
http://www.teltonika.lt/en/pages/view/?id=747 (just for reference, I 
think you can find cheaper and more functional devices made elsewhere).

Kind regards,
Rokas

On Wed, May 30, 2012 at 11:38 PM, Eduardo lavratti <address@hidden> wrote:

friends i will order a pair of long range radios  for telemetry.
I am think in digi 9XTEND radios.

This is the most powerfull data radio i know but i see that some people have problem using this radio.
have more options for long range radios ?

i will fly more than 50km away.

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