So I was living in China for a little while and one day whilst market shopping came across a phone jammer. Tested it out, and it worked so I bought it for a good price. Anyway, me some friends had a great time at bars and restaurants cutting peoples phone conversations off, then turn the jammer off so they could re-make the call and then... Cut them off again.
A few phones didn't jam so well, it just made the voice go all robot-like and distorted, and it tended to work better inside that out, but overall it was a good device and many laughs were had by all.
So I've brought my jammer back to Australia and I'm having some issues. Basically, it wont jam anyone using 3G. Anything else it Jams away but most phones are no go
So I've attached a picture of my device here, and maybe someone could give me advice as to how I can fix this problem.
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So, the three antennas attach to the top of the device, they are labeled separately 3G, GSM and DCS and are detachable as you can see. The black part is also unscrew-able from a silver base. Under the black part is a coil of what looks like copper but I'm not sure. The one is the picture is the 3G antenna. The 3G coil is shorter than the others.
I've tried switching the antennas around, but that doesn't seem to work either.
Anyway, any help would be appreciated