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Topic: cell phone jammer using house Mains ground as antenna (Read 1 time) previous topic - next topic

eddiea6987

would that be possible? i saw somewhere someone use their houses ground connection through a wall socket to extend the rang of his wireless headphones, fo course this creates a huge antenna as well as noise and might disrupt the neighbors devices on the same frequency , theoretically could you make a cell phone jammer and use your mains ground as the antenna ? I am not planning to make this nor am i asking for details on how , its just an idea that came to mind
I could print the Arduino logo on a box of cereal and sell it as "Arduin-O's"

cjdelphi

I'm not sure you'd get away with it because of the frequencies used...

You'd probably have more success picking a longer wave length to jam :) - interesting concept if you could though...

CrossRoads

I don't know, if I call from the back of my house I get crappy cell coverage, walk 18-20' to the front door and it's a lot better - maybe some self-jamming going on 8)
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Henry_Best


I don't know, if I call from the back of my house I get crappy cell coverage, walk 18-20' to the front door and it's a lot better - maybe some self-jamming going on 8)
I had exactly the same problem up to a couple of months ago. Then the phone company readjusted their mast and the signal is now quite strong and much the same throughout the house.

LarryD


I don't know, if I call from the back of my house I get crappy cell coverage, walk 18-20' to the front door and it's a lot better - maybe some self-jamming going on 8)

Is the outside of your house stucco?
The way you have it in your schematic isn't the same as how you have it wired up!

CrossRoads

No, cedar clapboard. I figure it's just crappy antenna placement (AT&T).
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Shpaget

Aren't jammers (of any kind) illegal in most civilized countries?

SirNickity

Is using a grounded wire really good practice for any kind of antenna?

mauried

To answer the original question the answer is no .
To make any kind of antenna that is in any way efficient , the antenna has to be resonant with respect to the frequency of the
energy being fed into it.
Most Cell phones operate on frequencies from 800 Mhz upwards.
Theres no way of connecting a transmitter on these types of frequencies to any kind of random length long wire antenna and expecting the wire to radiate the energy.

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