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Antennas 101

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Antennas 101

Postby hennisdk » Fri Sep 14, 2012 4:24 pm

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Re: Antennas 101

Postby robone » Fri Sep 14, 2012 5:23 pm

Hi Hennis

Good video.

Here is also a good article on antennas http://rcexplorer.se/Educational/gain/gain.html

What interests me is the Antenna tracker. Because ideally you need for the antenna to follow your Multirotor / Plane. Has anyone used a tracker

Rob
http://www.multirotor.co.za
| 3DRobotics | ZeroUAV | RC Tiger Motors | Vulcan SkyHook Airframes |
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Re: Antennas 101

Postby DanZ » Fri Sep 14, 2012 6:28 pm

Here are some other handy antenna videos :)


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Re: Antennas 101

Postby JohanMoelich » Fri Sep 14, 2012 8:10 pm

robone wrote:Hi Hennis

Good video.

Here is also a good article on antennas http://rcexplorer.se/Educational/gain/gain.html

What interests me is the Antenna tracker. Because ideally you need for the antenna to follow your Multirotor / Plane. Has anyone used a tracker

Rob


I've played with a tracker for a while but it's not really worth it. You'll be carrying extra stuff and take more time setting it up than flying.
With good circular polarised antennas (Cloverleafs) you can fly around you at reasonable distance. If you want to fly further out, use a Crosshair on the groundstation and decide beforehand which direction you want to fly. You can even rotate it while flying if your flight plans change.

If you do want to go the tracker way, here's a brilliant new idea where you use an Arduino board to do tracking calculations from RSSI values, without the need for GPS. All details are available in the thread. It only does pan, not tilt, but tilt is not that crucial.
http://fpvlab.com/forums/showthread.php ... GPS-needed!


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