This Laser Audio Surveillance kit is your pukka, honest to goodness, listen at the window ’cause we’re spies, type surveillance equipment. Shine the infrared beam at the glass and you’ll be able to eavesdrop on the conversation within from 500 metres away. The price of…cough…£21,150.00 includes training. In Germany.
The system allows the operator to carry out an undetectable laser surveillance operation from outside of the building up to a distance of 500 metres (Sometimes more subject to operating conditions). A digital equalizer has now been incorporated in to the system. This is an an adjustable noise reduction filter which assures an almost completely noiseless audio quality. Also included in the package is a high-end adjusting unit that enables the user to adjust the laser down to to 1/1000 millimetres which guarantees perfect results for hiiting the target.
in college we made one of these for about 10 bucks using off the shelf equipment
Hi Guys, I've tried to buy one of these music grabbers but they are no longer available. They seem easy enough to make – an A-D converter chip and associated circuitrry?? – If anyone can supply a drawing or one that is no longer required – for cash! – or even a supplier, give me a call
Lionel R.