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65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
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Red Boxing With Whistles by SCAN MAN &
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THE RESEARCHER
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This article is presented as a news
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item only. It is not to be taken as an
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encouragement to make fraudulent
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telephone calls.
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Red boxing consists of simulating the
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tones produced when coins are deposited
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in a pay phone. Coin tones are beeps of
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2200 Hz + 1700 Hz as follows:
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5 cents - 1 beep, 66 milliseconds
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duration.
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10 cents - 2 beeps, each 66
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milliseconds duration with 66
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millisecond pause between beeps.
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25 cents - 5 beeps, each 33
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milliseconds duration with a 33
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millisecond pause between beeps.
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Two methods have commonly been used by
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phone phreaks to produce these tones
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and make free calls.
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1. The traditional Red Box consisting
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of a pair of Wien-bridge oscillators
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with the timing controlled by 555 timer
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chips.
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2. Producing the signals with a
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computer which are recorded and then
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played back into the mouth piece of a
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pay phone.
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A third method has recently appeared
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which is a real mind blower. A phreak
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in the Midwest has extensively tested a
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method of red boxing which uses nothing
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more than a pair of brass or aluminum
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whistles. The whistles are 1/4 inch in
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diameter by 4 inches long and are tuned
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by means of a wooden dowel rod which
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fits snugly inside. The whistles can be
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brought precisely on frequency by
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tuning them against a known signal
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source such as a computer capable of
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producing the tones. Once tuned, the
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whistles are glued or taped together so
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they can be blown together to produce
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the dual tone used in coin signaling.
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It has been tested and proven that with
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a little practice these whistles can be
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used to make free calls. Now you can
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blow your money without spending a
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cent.
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DOWNLOADED FROM P-80 SYSTEMS 304-744-2253
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