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Is it possible to wrap “cellular connection” module in copper mesh to cut it off from sending data?

• kube-system 3y ago
  It probably won't work very well. Faraday cages attenuate, they don't block signals, and most amateur attempts don't even attenuate very much. Wrap your phone in aluminum foil, put it in the microwave, and give it a call. It'll probably still ring.
  • speff 3y ago
    Tried it - 1. No foil, microwave - rings 2. Foil, no microwave - rings 3. Foil, microwave - doesn't ring I feel like cell phones have to be more sensitive than w/e transmitter the car has, but your point holds - naively wrapping it in foil still probably won't work.
    • NewJazz 3y ago
      Cell phones are less sensitive than the transmitter in your car, usually. Think about how much power budget you have in a car vs. A phone.
    • kube-system 3y ago
      Nice! I've done a bunch of RF attenuation experiments with friends, and foil+microwave was the best result we found using stuff lying around any of our houses. With foil+microwave we were able to attenuate the signal enough to seriously degrade service, but never quite enough to block all traffic. In our experiments, the microwave was doing the majority of the work, based on the signal strength we observed. Results also varied a good bit by carrier, presumably because of the different bands used. Tin-foil hat wearers beware.
• planede 3y ago
  You probably have better luck by finding some standard antenna connection and attaching a proper 50 Ohm terminator to it.