Approximate Range

The operation of transmitters designed to jam or block wireless communications is a violation of the Communications Act of 1934, as amended ("Act"). See 47 U.S.C. Sections 301, 302a, 333. The Act prohibits any person from willfully or maliciously interfering with the radio communications of any station licensed or authorized under the Act or operated by the U.S. government. 47 U.S.C. Section 333. The manufacture, importation, sale or offer for sale, including advertising, of devices designed to block or jam wireless transmissions is prohibited. 47 U.S.C. Section 302a(b). Parties in violation of these provisions may be subject to the penalties set out in 47 U.S.C. Sections 501-510. Fines for a first offense can range as high as $11,000 for each violation or imprisonment for up to one year, and the device used may also be seized and forfeited to the U.S. government.

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sciguy14
 
Posts: 17
Joined: Fri Jun 12, 2009 3:19 pm

Approximate Range

Post by sciguy14 »

Hi all,

Another quick question about my wave bubble. I finally got one working! I'm using the built in antennae, and the range seems pretty small, maybe 2 feet. Is this about what other people are getting? How much would using an external antenna boost this?

nux
 
Posts: 23
Joined: Sun Mar 22, 2009 11:48 pm

Re: Approximate Range

Post by nux »

What frequency ranges are you trying? The PCB antennas are tuned to about 850/1900 iirc, and the gain stage is tuned to that as well, so if you are trying different frequencies then you would need to redesign the PCB antenna or use an external, as well as possibly changing some capacitor values. Also, the frequency range should be as small as possible, to maximise the power in that spectrum.

sciguy14
 
Posts: 17
Joined: Fri Jun 12, 2009 3:19 pm

Re: Approximate Range

Post by sciguy14 »

I am indeed using the cell phone spectrum. I do still have to try tweaking some capacitor values...

I'v found that the range is actually far greater depending on the cell phone. On an iphone, the jammer worked from 15 feet, but On my Verizon smarphone i had to be much closer...

This would seem to indicate that it is performing better on the GSM spectrum than the CDMA spectrum.

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