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Earth magnets and interference

Old 06-24-2007, 07:54 PM
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reincarnate
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Default Earth magnets and interference

Will using "rare earth" magnets to hold hatches and other misc. parts in place cause radio interference? Came up at the field today, and now I'm questioning a decision I have made. With the magnets being as strong as they are, I wonder if the lines of flux from the magnetic field will react with the receiver. JR 790 PCM and probably standard digital servo's.
Old 06-24-2007, 08:03 PM
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Edwin
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Default RE: Earth magnets and interference

I use them on smaller electrics and have had no problems, its pretty close proxemity. Will probably use them on a TF giant P-47 too.
Edwin
Old 06-24-2007, 08:10 PM
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Bad_Daddy
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Default RE: Earth magnets and interference

I've never experienced any problem either. Running the antenna parallel to a carbon or metal rod has a lot more effect, from my experience.
Old 06-24-2007, 08:56 PM
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Default RE: Earth magnets and interference

okay i have a tiny little theory here... a change in the strength of the magnetic field covering a conductor, causes a voltage difference, just like the rotor of a dynamo moving towards and away from the magnets in a dynamo.... now if you have enough vibration, as in your electronics are moving relative to the magnets, its not that different from a dynamo happening inside your circuitry....
Old 06-25-2007, 08:48 AM
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BobH
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Default RE: Earth magnets and interference

The magnetic flux changes by a factor of the cube of the distance from the magnet. So unless you have several right along the antenna I doubt you will see any interference.
Old 06-25-2007, 02:05 PM
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TLH101
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Default RE: Earth magnets and interference


ORIGINAL: reincarnate

Will using "rare earth" magnets to hold hatches and other misc. parts in place cause radio interference?
No.
Old 06-25-2007, 02:34 PM
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reincarnate
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Default RE: Earth magnets and interference


ORIGINAL: TLH101


ORIGINAL: reincarnate

Will using "rare earth" magnets to hold hatches and other misc. parts in place cause radio interference?
No.
Now thats the kind of answer I was looking for! Thanks guys.
Old 06-25-2007, 04:58 PM
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TLH101
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Default RE: Earth magnets and interference

Damn, I half expected to get flamed for that answer.
Old 06-25-2007, 09:00 PM
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xcellheli
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Default RE: Earth magnets and interference

Electric motors have strong earth magnents, and those planes don't fall out of the sky. Don't servos have earth magnets in their motors?

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