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Old Oct 23, 2011, 05:58 PM
Future is RTF!!
PCola-Flyer's Avatar
Pensacola, Florida
Joined Jan 2003
278 Posts
Discussion
ar 6200 question.

I have encountered failsafe kicking in at about 200ft several times and it almost cost me my quadcopter.. just trying to figure out if i have a faulty receiver or if its something I am doing wrong. Only happens when I am vertical around 100 to 200 ft.. when I fly down the field 300 ft plus don't ever have it. I have the two receivers on seperate arms about 8 inches away from each other.

any ideas?
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Old Oct 24, 2011, 05:39 AM
Air, Ground & Water
freechip's Avatar
Canada, ON, Rockland
Joined Aug 2008
24,078 Posts
Are your arms CARBON and the receivers sitting on top of them? Try installing the sat rx under the quad to have line of sight with TX.
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Old Oct 24, 2011, 05:52 AM
60 years of RC flying
Daedalus66's Avatar
Canada, ON, Ottawa
Joined Feb 2006
16,473 Posts
Sounds like you have good separation. But here are a few other things to check, besides the possibility that CF pieces (or other conductive material like wires and batteries) are not blocking the signal.

Are the antenna wires on the two units straight and are the units oriented to have the antennas at right angles to each other?

Have you done a careful reduced power ground range test, in which the model is rotated through all orientations to ensure that you have control? Also checking that you have control even with the Tx antenna pointed at the model. If you get anything like the standard "30 paces" (90 feet), you should have sufficient range to fly till the model is out of visual range.

Do you have the Tx antenna set off to one side to ensure good signal when the model is overhead? If it's pointing up, the model will be in a zone of minimum signal when overhead.
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Old Oct 24, 2011, 08:13 AM
AndyKunz's Avatar
Illinois
Joined Sep 2001
23,986 Posts
A photograph with a ruler to judge scale would probably answer a lot of the questions people are going to ask you.

Andy

PNS is a great place. Two of my kids went to PCC.
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Old Oct 28, 2011, 12:28 PM
Future is RTF!!
PCola-Flyer's Avatar
Pensacola, Florida
Joined Jan 2003
278 Posts
Ok I flew 3 packs today and figured out why the at 6200 had interference!
1st pack flew out 400 feet glitch hard landing so I decided to remove fpv gear to just check if that was the issue. Two packs later no interference no failsafe etc..

Fpv gear 900 MHz 500 mw
Radio dx6i 2.4

Any recommendations on one that doesnt cause interference?
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Old Oct 28, 2011, 03:47 PM
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ivanc's Avatar
United States, TX, Round Rock
Joined Dec 2004
9,416 Posts
FPV gear radio frequency should be higher than RC frequency. Most FPV uses 72MHz for RC and 900MHz and higher for video feedback.
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