hello,
i need a xbee pro (>300mW) WITHOUT DUTY CYCLE in a 800 MHZ band.
i have read in other forum that the module 900 pro, wich manufacture for 900MHZ, also aviable in 866MHZ for europe… without limititation !
is that correct ? where i can buy it ?
rg olli
Did you look on Digi International’s web site?
You understand that the different frequencies have to do with what is and is not legal to use, right? If you are not in Europe and you use a module that is legal only for Europe, you are breaking the law, and producing potentially dangerous interference.
(I say “dangerous” because the RF spectrum is sliced up to provide interference-free operation of many things including emergency communications, medical devices, and so on).
Do not try to use a module that is not legal where you live.
hmm legal… i don´t know… but this frequency is not used by other devices here, i think.
but my question was : aviable or no WITHOUT dutycycle in THIS band :?:
or other question:
what ist the approx range with the 2,4GHZ PRO module with 60mW ??
scenario: i will use the TX in a UAV (wich flying >200m high).on earth i will used a 8dBi patch antenna…
or there are bette module for 2,4 ghz ? - xtend 2,4 in 500mW ???
olli
I have had good communications between two XBee Pro 2.4 GHz models with nothing but the wire antenna when the transmitting module was inside a rocket traveling about 700 Km/Hr to an altitude of about 900 meters. The XBee Pro 2.4 GHz claim a range of 1 mile line-of-sight (1.6 km).
I do not know if I would have had good contact if the module in the rocket was receiving from the module on the ground, but going the other way around, I had no problems.
It may not be used because the frequency is allocated to another service like the military.fuzna:
hmm legal… i don´t know… but this frequency is not used by other devices here, i think.
Do check with the country you live in. Illegal radio transmissions are a serious matter and the Penalties can be very severe.
If you go to Digi Int’s web site then email them (like I recommended above) they should be able to help you for with the regulations in your country. They do sell their products all over the world.
Get the facts from a reliable source and not from us hobbyist.
What does this mean? No one here knows!but my question was : aviable or no WITHOUT dutycycle in THIS band :?:
hmm, i need 4-5 KM … 1,6 is a little to less for me.
then i must testing with the xbee pro-868.it´s possible to reset this module after every 6 minutes ? then reset the dutycycle counter also !??
wich time need the xbee for reconnect after reset ?
IIRC, most EU countries have regulatory limits on tx duty cycle in 868MHz.
@ stevech
??? i know
see one post above 
Can you get the job done with 868MHz - range and goodput?
Range in any band, line of sight, is very predictable. Google Link Budgets.
In 2.4GHz you can get similar range to 868MHz because at the higher frequency, high gain antennas are small and negate the 6dB per octave penalty of higher frequency.
So it depends on what net data rate and latency you need, plus what non-line-of-sight conditions you expect. The regulatory restrictions are effective radiated power (EIRP) and duty cycle.
i need it for tx telemetry from aeroplane. i will sent GPS data. 3 NMEA sentence with 1HZ = 240 chars/s netto.
the uart from autopilot is 115200Bd 8N1
minimum altitude approx 150-200m i think.problem on 2,4ghz is: my video link working also there !
i don´t know wich flight time i reach with this 10% dutycycle… ?