[Solved] RF Signal from Wrong Direction?

EightImmortals on 18/03/2023 - 10:22
Last edited 18/03/2023 - 12:31 by 1 other user

OK one for the radio techies.

We have 2 cell phone towers to the south-south-west of our house, one emits 4G and 5G, the other emits 3G, 4G and 5G. The towers are about 500 meters away at a guess.

Using the TriField2 EMF meter I get a high EMF reading from our bedroom window which faces SSW so that makes sense. Sitting in bed though, away from the window the reading drops a fair bit. But I am also getting a high reading from the east facing window/sliding doors. There are no towers to the east of us at all so I was wondering how to explain the RF coming from the easterly direction? At the other end of the house the RF signals are very low, which also makes sense. Is it possible that the signals from the SW towers are bouncing around and coming in from the east as well as the SW?

Just thought I'd throw it out there to see if that theory made sense.

Cheers

(mystery solved, I typed in a different postcode and even though the map didn't change, the number of cell towers did and it showed a couple of towers a few K's to our east. I'll nip off and have myself cancelled now. )

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  pjetson on 18/03/2023 - 11:27

  How you could be sure that you were detecting only mobile phone tower signals with that device?

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  redforever on 18/03/2023 - 11:43

  A few hundred meters out from towers, try turning your microwave oven and wifi modem on and off while measuring and see the difference it made.

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  GordonD on 18/03/2023 - 12:13

  Broadcast radio and television send a strong signal out over a huge area.

  The mobile phone system is quite different. Mobile phones and towers have to both send and receive. You can't have a hugely powerful tower transmitter, and a phone with very low power output, because then the tower wouldn't be able to hear the phone over the huge area the phone could hear the tower. This is what people who complain about phone towers near them don't understand. Phone towers don't actually have a very high transmission power. A phone - which can transmit up to 2 watts - near you can measure just as high in signal strength as a phone tower - which transmits about 10 watts - a couple of hundred metres away.

  A radio frequency signal source in the "wrong direction" for the local phone tower could be a neighbors phone or wifi. They both transmit in exactly the same frequency band. It could be wireless internet serving your area.It could be a TV transmission tower a long way away because they operate at much higher power levels.