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Learn to build bugs or take advantage of those already in place; assemble a DFMF decoder or decode phone tones without one; construct a red box for free pay phone calls; crack answering machine passwords; defeat digital and spread-spectrum cordless phones with an FM phone tap; and much more! For academic study only. 8 1/2 x 11, softcover, photos, illus., 128 pp. ISBN 1581600275 Electronic circuits and secrets of an Old-Fashioned Spy by Sheldon Charrett
Price: $29.95 |
- 01-NEW PRODUCTS/ON SALE
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