Magnets & 2.4 GHz Receivers

The battery hatch on my latest project is held in place by 6mm dia magnets.
I'm now finalising the position of the receiver and am concerned that the relative
proximity of receiver / aerial / magnets my a cause a problem - advice please.

Pic attached.

Thanks

Colin.

Static magnets will not have any detremental affect. The proximity of the UBEC to the Rx is a different matter as it uses high frequency switching to chop the voltage!

I agree with JRI regarding the magnets and would add that the high frequency switching should of the regulator should not be a problem either. High frequency switching used to interfere with 35MHz receivers but Gigahertz receivers will filter lower frequencies as if they are not there.

John & Mike - Thanks for your comments I can now fit a tray & "Velcro" the receiver in place.
When using 35MHz I had interference problems with a Twin Otter which was put down to a "Dirty" E.S.C,
replaced one, problem solved.

Colin.

Mike has far more experience with radio gubbery than I do, but my observation about the UBEC proximity to the Rx is based on the technology of "chopping" dc as part of the process of up/down-volting. If the UBEC does hard switching of the dc then the resulting leading and trailing edges of the chopped waveform can contain a very wide range of harmonics; these can generate electromagnetic radiation or pulses of current that interfere with other nearby circuits, causing noise or errors (hence the ferrite ring usually seen on the output of the UBEC). I am not an authority, just cautious.

Yes Mike and John. The ferrite ring does the job of suppressing harmonic noise in the lead. always best policy to keep any switching regulators as far away as possible. Some of the upmarket switching regulators do have some filter components. Linear regulators (generally low current/cheap ones) are not normally any problem, they just waste the excess voltage/current as heat. If it was not for the simple ferrite ring we would be fitting another device/circuit board with capacitors and LC filters on the output lead

Thanks All for additional comments - pic of final installation attached.
The ferrite ring for the Ubec was supplied loose in the packet so the unwary
could easily omit fitting it, the other ferrite ring is on the E.S.C. lead.
I will check to ensure there are no interference issues before maiden flight.

Colin.

Careful of your Velcro polarisation too. Has to be furry bottom on the receiver otherwise the 2.4Ghz will have a dead spot directly under the receiver.

DaveBright wrote: Careful of your Velcro polarisation too. Has to be furry bottom on the receiver otherwise the 2.4Ghz will have a dead spot directly under the receiver.

Or use a "furrite" ring to neutralise any stray "velcrons" :dry:

JRI wrote:

DaveBright wrote: Careful of your Velcro polarisation too. Has to be furry bottom on the receiver otherwise the 2.4Ghz will have a dead spot directly under the receiver.

Or use a "furrite" ring to neutralise any stray "velcrons" :dry:

"Velcrons" - thats a whole new subject but at least they have Wings and Antennae

shishenyunewworld.wordpress.com/velcrons/