41 lines
1.5 KiB
Plaintext
41 lines
1.5 KiB
Plaintext
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HOW TO BUILD AND USE A RED BOX......
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=<COURTESY OF -<U.N>->=
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=<TYPED BY THE MASTER >=
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----------------------
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THE RED BOX BASICALLY SIMULATES THE SOUND OF COINS BEING DROPPED INTO THE
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COIN SLOT OF A PAY TELEPHONE. A PAY TELEPHONE GENERATES A BURST OF TWO
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MIXED FREQUENC IES, 1700 HZ AND 2200 HZ, FOR A SPECIFIC TIME INTERVAL TO
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DENOTE A NICKLR, DIME, OR QUARTER. A NICKLE IS 1700 HZ +2200 HZ FOR 66
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MILLISECONDS. A DIME IS 1700 HZ + 2200 HZ FOR 66 MILLI. SECS. ON, 66 MS.
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OFF , THEN 66 MS ON AGAIN. FINALLY, A QUARTER IS 1700 HZ+2200 HZ FOR 33,MS
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ON, 33 MS, OFF, CONTINUOSLY REPEATING FOR 5 TIMES.
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WHEN USING A RED BOX ON A PAY PHONE, FIRST DEPOSIT A REAL NICKLE (BECAUSE
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T HEY CAN TELL IF THE FIRST ONE IS A REAL ONE OR JUST A TONE), THEN USE
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THE TONE B URST. YOU CAN BUILD THE CIRCUIT TO GENERATE A NICKLE TONE, THEN
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RECORD IT AND PL AY IT INTO THE PAY PHONE WITH A WALKMAN CASETTE PLAYER.
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TO GET THE MAP, SEND $2 DOLLARS TO
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MASTER WORLD
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1609 S. BENTLEY AVE
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LOS ANGELES, CALIFORNIA 90025
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THE MAP HAS MANY FIGURES THAT THE COMPUTER CANNOT PRODUCE.
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IF YOU HAVE THE MAP , HERE ARE SOME TIPS
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ADJUST R1 TO GET 2200 HZ AT POINT A
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ADJUST R2 " " 1700 HZ " " B
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PRESS SWITCH FOR 66 MS ON AT SPEAKER
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THIS SIMULATES A NICKLE
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THE 555 TIMER-> 66MS TIMER
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THE 556 DUAL TIMER->2200HZ+1700HZ GENERATOR
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741->TIMER OP AMP BUFFER FOR SPEAKER
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SO REMEMBER IF YOU DON'T HAVE THE MAP SEND TWO DOLLARS TO THE ADDRESS UP ABOVE
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%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=%=
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