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Old May 04, 2015, 01:56 AM
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Question
Long Range Telemetry in Europe?

Hi all,

I need to upgrade from the 3DR Radio modems to long range (approx. 30 km) telemetry. The RFD900+ seems nice but they are not yet legal in Europe?
What do people use? I have some XBee PRO 868, are they the best option?

Thanks in advance!
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Old May 04, 2015, 04:53 AM
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Easiest solution is keep the 3DR radio and get a high gain Yagi antenna. You can get more range with a high gain antenna than you can by increasing the power. RMRC lists an antenna but they are out of stock. European stores will probably have them in stock.
http://www.readymaderc.com/store/ind...roducts_id=883


More Options: http://www.readymaderc.com/store/ind...th=11_45_46_50


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Old May 04, 2015, 04:55 AM
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The Moxon Rectangle looks like it has lots of gain but I have never uses one of those. http://www.readymaderc.com/store/ind...oducts_id=1614

http://www.readymaderc.com/store/ind...reviews_id=372
That looks like the first thing I would try if I were you.

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Old May 24, 2015, 04:15 AM
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Semporna, Sabah, Malaysia
Joined Apr 2010
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got stumbled here while searching unmanned control system. if you ever go down the yagi antenna path... yagi can be home build for various freq, there are some documentation in the net such as...
http://radio.meteor.free.fr/us/yagi_fm.html
http://www.instructables.com/id/Easy...-Yagi-Antenna/
you need to know what E, R and D and you can slap you required Freq and # of elements in this attached little software (Windows only)
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Old May 27, 2015, 02:50 PM
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Iran, Tehran
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Is there any reliable information about official UAV flight rules and its limitations in western Europe on the net ?

Quote:
Originally Posted by Ikaruz View Post
Hi all,

I need to upgrade from the 3DR Radio modems to long range (approx. 30 km) telemetry. The RFD900+ seems nice but they are not yet legal in Europe?
Why should this product be illegal !?

Quote:
Originally Posted by Ikaruz View Post
I have some XBee PRO 868, are they the best option?
If RFD900+ is illegal, XBP08-DK will be illegal too.
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Old May 27, 2015, 03:29 PM
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Our telemetry radios operate under ISM rules since they are Spread Spectrum.

902 to 928 MHz is only legal in Region2.
433 to 435 is for Region 1 (Europe)

http://en.wikipedia.org/wiki/ISM_band

Region 1 comprises Europe, Africa, the Middle East west of the Persian Gulf including Iraq, the former Soviet Union and Mongolia.

Region 2 covers the Americas, Greenland and some of the eastern Pacific Islands.

Region 3 contains most of non-former-Soviet-Union Asia, east of and including Iran, and most of Oceania.


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