So I downloaded and installed an EMF app -measures EMF in microteslas....I get readings of about 40-50 in the house...obviously no problem. But what reading is too much?
How much EMF is too much?
- Thread starter roblevine
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Sorry I was unclear - wondering what micro tesla level is enough to cause interference with the drone
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Ohhhh.......I get what you mean now. I thought you meant at what point should you start wearing a tin foil hat.
To answer your question..... It's almost impossible to answer.
The reason being, it all depends on how well both a final output stage on a transmitter is designed and how well the interference rejection is on a receiver.
A badly designed receiver will not be immune to being swamped by two much RF on not only the fundamental but can also suffer interference from second or even third harmonic frequencies. Simarlarly, a poorly designed TX will output dirty RF outside of its 'notch' frequency and interfere with adjacent channels.
This is why it is always good practice to put your tablet as well as any close proximity cell phones into airplane modes whilst operating. In fact, I insist that any clients standing near me and observing put their mobile devices into this mode.
Whilst 999 times out of a 1000 this may not cause any issue why not mitigate risk for the sake of a 10 second request whilst you are flying your mission?
I actually have it written into my ops manual that all rf transmitting devices are either turned off or put into safe mode in the immediate area.
Thanks for the detailed reply. I guess that applies to man-made EMF interference? I was also wondering about EMF from naturally occurring objects - such as big reinforced concrete structures, i.e. bridges and such.Ohhhh.......I get what you mean now. I thought you meant at what point should you start wearing a tin foil hat.
To answer your question..... It's almost impossible to answer.
The reason being, it all depends on how well both a final output stage on a transmitter is designed and how well the interference rejection is on a receiver.
A badly designed receiver will not be immune to being swamped by two much RF on not only the fundamental but can also suffer interference from second or even third harmonic frequencies. Simarlarly, a poorly designed TX will output dirty RF outside of its 'notch' frequency and interfere with adjacent channels.
This is why it is always good practice to put your tablet as well as any close proximity cell phones into airplane modes whilst operating. In fact, I insist that any clients standing near me and observing put their mobile devices into this mode.
Whilst 999 times out of a 1000 this may not cause any issue why not mitigate risk for the sake of a 10 second request whilst you are flying your mission?
I actually have it written into my ops manual that all rf transmitting devices are either turned off or put into safe mode in the immediate area.
Wouldn't ask you to share your ops manual
but you know of any online?
