Is it possible to cover APM with aluminum foil to minimize UHF noise interference?

Is it possible to cover APM with aluminum foil to minimize UHF noise interference or is it bad idea because of its sensors, please?

I use Mini APM 2.7.2.


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I will keep you informed.

If your Mobius srews your GPS, wrap it to aluminum foil as you can see in video. It will solve it. Then wear your hat proudly to celebrate that... LOL ;)

Short version of the above really long rambling post.

1. Video has nothing to do with the APM (for the third time in 24hrs).

2. After 4 pages of rambling and name calling, he finally admits that he's done no testing for, and has no examples or experience indicating the APM emits RFI that effects the RC receiver in any way.

Case closed. Next.

First close your nasty rambling mouth. Second the measurements are important which were done. Comparison of graphs of components were done. Based on this, suspicion of the possible behavior can be expected. The practical effect of noise generated can be proved with test described multiple times, but with your attitude there is no willingness to do it. 

using aluminium material to try to block EMI from a component is not the best : aluminium is very reflective and absorbs very little the EMI : the EMI will bounce all over against the Al and will find a way out.

Better material that absorbs better is copper of tinned copper, or iron even.

This is why you'll sometimes find electronics equipment incased in a plastic shell that has been sprayed with Cu (copper paint), like for example the Runcam.

I would not do this really anyway as the best "shield" is simply to space your components by a few centimeters apart. The EMI impact diminishes as a square function of the distance.


Let's keep this discussion a friendly discourse on the merits of the original proposition in this discussion thread or I will be forced to close it out.



Yes, RunCam authors did copper paint of the case. But it simply does not work as they expected. The measured noise is nearly the same level of Mobius. Only wrapping it to aluminum foil helped. Now zero UHF noise measured. That it is why aluminum foil is more or less enough. Also you can cover it multiple times to make sure no noise gets out.

Interesting. All I've done is ask you to show there is a problem since you claimed there is a problem. You haven't yet. And from page one of this thread, your response to this was to call me a "crazy idiot".  But sure. Ok.

Thanks, will do. And trying to do it originally. I rather prefer constructive answers, questions and comments rather than something what dishonest somebody. This was answer to that not kind style of comment as it is used to get from that user (which tries to hunt people over internet to make himself happy, I do not understand such behavior) instead of to be friendly and open and to provide constructive comments, questions and suggestions or to be simply quiet if not new words to say, lets make others opinions to be commented about this subject and or to give space to make some practical tests. I think it is not worth to repeat. Every other user comments normally. I did not meet such not friendly behavior yet.

:D :D :D one needs to be careful... :D Thanks for providing such important information. :)

Do you have the space in your aircraft to construct an RF tight container?

It would be similar in appearance to THIS project.

Power and signals will have to be filtered to make/keep EMI from going into or out of the electronics. It is a 'nuclear option' to be sure.

I work on MRI systems. We contain them in very large RF tight rooms to keep image quality reducing noise *outside*.

Copper pcb is cheap and can be found lightweight. It can also make a very sturdy box.

Other options are tin sheet, it too can be soldered. Aluminum sheet can be used if fabricated correctly.

Heavy duty aluminum foil might work if bonded to a balsa box with an overlapping lid and proper input/output filtering.

Copper tape over a balsa or heavy card stock box could be soldered also.

PCB material is way cheaper and a good solution.



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