ddt@lsd.com (Dave Del Torto) wrote
Anyone here know a source for a listening-device ("bug") detector?
In my (very lkimited) experience this is NOT an easy thing to detect. I have pulled apart some comercial bug detectors, usually the contain a 556 and some LEDS witha speaker. One did actually have anoise diode and a little counter so's to make things seemingly randmo and more real.
In reality it is quite difficult to detect ALL bugs. Whilst at a guess most will be FM (50-150 Mhz) there is still the possibility they use other (prob. higher) frequencies. I good scanner might pick them up - provided it is sensitve enough and can scan fast enough as there is quite alot of spectrum to cover.
Chris
I thought the trick was to use a 'near-field' receiver. I saw one at the Dayton Hamvention a couple years ago for about $100. It'd receive Am audio or sync on FM (you'd here no-noise silence they said). You don't tune it: it relies on the 'near-field' effect which is something about how transmitters can induce the right harmonics in a certain type floating receiver within a short distance. The Rabbit TV extender and a stereo TV decoder used the same method: they sat on top of the TV and 'noticed' which channel you were on. sdw -- Stephen D. Williams Local Internet Gateway Co.; SDW Systems 510 503-9227APager LIG dev./sales Internet: sdw@lig.net In Bay Area Aug94-Dec95 OO R&D Source Dist. By Horse: 2464 Rosina Dr., Miamisburg, OH 45342-6430 Internet Consulting ICBM: 39 38 34N 84 17 12W home, 37 58 41N 122 01 48W work Newbie Notice: I speak for LIGCo., CCI, myself, and no one else, regardless of where it is convenient to post from or thru.