BENCH-TESTED CIRCUITS BOOK

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Bench Tested Circuits

If you're hungry for updated, practical electronic circuits for surveillance and counter surveillance, this book is a beggar's banquet. There's no speculation here—author Tom Larsen makes his living as a counter surveillance technician, and he has bench-tested every one of his designs. Not only do they actually do what they are supposed to, these ingenious circuits are simple, inexpensive, and fun. You won't find any dry, overly technical explanations in this book. Instead, you'll be treated to colorful descriptions of the real-life applications of scores of circuits and techniques, as well as a basic explanation and schematic detailing clearly and concisely how and why they work.

Get the low-down on a never-before-published hook-switch bypass that turns a telephone into a standing microphone while on the hook, using only a resistor, capacitor, and a jumper wire. Learn how to build the bug detector that never hit the market, even though it out performed the top-selling units in the 1980's and early 1990's. Need a never-before published circuit that will stop most spousal phone tapping? It's in here too. So are some simple radio-control circuits for real-world applications
that you can construct with readily available parts (Find our what the author did with a baby monitor he bought for five dollars at a garage sale!). Maybe you have a need for Larsen's unique surreptitious entry alarms and field-tested firefly flasher (tailing device) circuits that can only be seen with night-vision equipment. How about a never-before-published carrier current transmitter detection circuit that will detect all modulation forms, including digital, which is used by the feds! There's even a leakage detector for phone line taps that outperforms some popular commercial units. You don't need to be a genius to put these brilliant designs to work for you—and you don't have to be rich, either. All you need is an understanding of basic electronics, a mischievous mind, and the wealth of information contained in this manual.

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