how to kill signal strength of a 3g usb modem

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#1
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Ermm... I am still working with the 3G usb modem and my UC3A...

Trying to simulate network dropouts now. Have placed the dongle inside meter boxes and cabbinets but the poor thing wont die :(

Someone suggested coke cans...well after seeing how metal tool boxes not work I am not sure coke cans will.

Any other methods anyone knows?

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short out the aerial input ?

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Buy a tin of chocolates.
Eat the chocolates.
Use a wire brush to remote the paint where the lid makes contact. Do the same inside the lid.

Remove the outer plastic for a few cm on a usb cable, poke it through a hole in the tin, solder the braid to the tin, all the way around.

Drop a bag of water in the tin, attach the usb modem, close the lid. Leave the bag out if you want to kill the downstream, but less so the upstream.

Yes your coworkers/friends will stare. This can be remedied by sharing the chocolate.

/Kasper

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Meter boxes and cabinets do not have proper RF gaskets to effect a seal.

You may have to get yourself a diecast box, machine any ( USB ) connector holes and place the unit inside the enclosure.
You may also have to place inline RF filter so that the connections to the box do not act as an antenna.

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Where is 3G in Australia, 1800 or 1900? Generate triangle/square wave, a few dBm would be enough to kill anything in radius a few meters.

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You did not get this from me:

http://www.dealextreme.com/p/p13...

They have all kinds and they WORK!! ;)

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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Quote:
You did not get this from me:

Here's the relevant law for mobile phone jammers in australia:

http://www.comlaw.gov.au/Details...

According to section 197 of the telecommunications act 1992, the penalty is up to a year imprisonment.

- S

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If you shove it in a couple of beer cans that have been mated together and electrically bonded at the junction AND you de-couple the leads going into/from the can, I would be most surprised if it did not stop it functioning.
You might be very close to a cell of course. You may need to double shield it by dropping it to another container such as a large coffee can.

Quote:
short out the aerial input ?

Nah! IMHO Not a good idea!

Charles Darwin, Lord Kelvin & Murphy are always lurking about!
Lee -.-
Riddle me this...How did the serpent move around before the fall?

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Quote:

that have been mated together

I must be wearing beer-goggles, I read "mated" as "malted" :lol:

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Quote:
According to section 197 of the telecommunications act 1992, the penalty is up to a year imprisonment.

Just posted it, did not say to buy it :)

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user