good spy gadget image
Anubhav
Actually I want an ideal circuit diagram, easy to construct with an electret/condenser mic and the power
supply is 3v ,1.5v,4.5v or 6v (3v is most preferred). With this circuit I should be able to hear conversations easily like a spy gadget.Thanks in advance.
Answer
To get started quickly, try a Velleman MK136 "Super Ear" kit.
It should be available from many sources.
Ramsey Electronics offers it for $9.95 plus shipping.
Other companies offer similar items in either complete or kit form.
Radio Shack still offers two ready-to-use versions of this idea.
Look for catalog numbers 33-1096 ($29.99) and 33-1097 ($39.99).
To get started quickly, try a Velleman MK136 "Super Ear" kit.
It should be available from many sources.
Ramsey Electronics offers it for $9.95 plus shipping.
Other companies offer similar items in either complete or kit form.
Radio Shack still offers two ready-to-use versions of this idea.
Look for catalog numbers 33-1096 ($29.99) and 33-1097 ($39.99).
Is there a spy device to be able to hear something from 100 ft away?
Linda
Like if I can put a spy gadget on something then be 100 ft away and have another device to hear a conversation.
Answer
There are several types of devices that meet this criteria....
One is a device called a parabolic ear listening device.... it is shaped similar to a small satelite dish and has a small amplified set of earphones that comes with it.....
Another such system is one that is based on a small FM transmitter that is placed on the scene that picks up the sound around it...and transmits it to a small FM receiver that can be as much as two miles away....
It all depends upon an individuals budget... and, the their willingness to get busted for invasion of privacy.... if they are doing this eavesdropping without the appropriate investigator's licenses or the proper warrants for such activities.....
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There are several types of devices that meet this criteria....
One is a device called a parabolic ear listening device.... it is shaped similar to a small satelite dish and has a small amplified set of earphones that comes with it.....
Another such system is one that is based on a small FM transmitter that is placed on the scene that picks up the sound around it...and transmits it to a small FM receiver that can be as much as two miles away....
It all depends upon an individuals budget... and, the their willingness to get busted for invasion of privacy.... if they are doing this eavesdropping without the appropriate investigator's licenses or the proper warrants for such activities.....
â¼ ////
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