Is there a system of espionage to hear something 100 feet? As if I can put a gadget spy on something, then to 100 ft away and have another device to hear a conversation.
There are several types of devices that meet these criteria ....
One is a device called parabolic ear listening device .... it is shaped like a small satellite dish and has a small amplified set of earphones that comes with it .....
Another system is one that is based on a small FM transmitter that is placed on the scene that captures the sound around him ... and transmits it to a small FM receiver which can be as much as two miles away ....
It depends on the individuals of a budget ... and willingness to get arrested for their invasion of privacy .... if they do listen without appropriate licenses from the investigator or appropriate mandates for such activities .....
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Yes, you can buy kits or wire elements which can be connected to the telephone line or use a microphone.
www.ramseyelectronics.com
www.parts-express.com
No, I do not think so.
Posted on March 14, 2010.