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December 14, 2019, 03:20:06 am

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Can 5g interfere with 2.4?

Started by itsme, August 09, 2019, 13:00:11 pm

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itsme

There is a 5g mast going up near our site, anyone know if this can cause interference on our frequencies?

British Victory

5G will use spectrum in the existing LTE frequency range (600 MHz to 6 GHz) and also in millimeter wave bands (24-86 GHz). 5G technologies have to satisfy ITU IMT-2020 requirements and/or 3GPP Release 15; while IMT-2020 specifies data rates of 20 Gbit/s, 5G speed in sub-6 GHz bands is similar to 4G.
This is a cut and paste from the following website
https://www.rfsafe.com/5g-network-uses-nearly-same-frequency-as-weaponized-crowd-control-systems/
If you are really concerned then approach the appropriate authority and kick up f***
Apologies for the vague response to your query.
there's only one f in RCMF,
               John

pooh

 I have to confess to having a giggle at the comparison of military crowd-control gear compared to a mobile phone.

This is like saying collision with a roller skate is the same as one with a 40-ton artic just because they both have wheels. The military kit uses a highly directional antenna fiocussing the signal on the target, and I suspect they use a bit more power than a mobile phone! (about  1 million times more power...)

Any radio transmission frequency can be dangerous if the radiated power is high enough and the transmitter is close enough. The same fears were luridly discussed when mobile phones started to appear, but despite there being millions in daily use across the globe, there is very little, if any, reporting of proven damage to the users.

You might find the contents of this link

https://en.wikipedia.org/wiki/Active_Denial_System

of interest, as it gives a factual explanation of how the military kit works, plus some references to studies done to establish the effects of the radiation to be temporary, and with no lasting effects. The main point is that the radiation penetrates less than 0.4mm into the skin, but heats the skin to about 44C which makes the target try to escape as quickly as possible.

As to interference with 2.4GHz RC, no more than existing transmitters - as my comment above, a strong enough radio signal on ANY frequency can do "damage", in this case, block a wanted signal by overcoming the conduction threshold of the semiconductors in the receiver. You might experience this flying the plane through the beam of a microwave radio link - we had an issue which seemed to be caused by this at our Club site as flight glitches were noticed at a particular altitude and position matching the path of a microwave link, judging by the direction a parabolic communications tower antenna was pointing.

This is different from interference on the actual wanted signal frequency, those of us using 35MHz will remember the shoot-downs when two pilots used the same channel!
Confucious he say "more than one aircraft in the same airspace leads to structural failure"

itsme

Nothing military. This is a mast to control autonomous vehicles within a mile or so radius- but we will be flying within 500m of that mast. We cant kick up a fuss, its put up or shut up, so any clash or swamping will be fatal to our site. Anyone fly near a normal wi fi mast?

paulinfrance

mont_bouquet.jpgI have a older antenna 200 metres away and no problem and eve a military one at Mount Bouquet, and all ok there,,,
Mode 2 THE only way to fly

itsme

Thanks, Paul, that's a bit more reassuring.