88 lines
3.5 KiB
Plaintext
88 lines
3.5 KiB
Plaintext
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Devil Guard and the Audio Visual Room present...
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WHITE BOX PLANS
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THIS ARTICLE WILL TELL YOU HOW TO CHANGE A NORMAL TOUCH TONE KEYPAD AND
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CONVERT IT TO A PORTABLE UNIT. IN ADDITION, WE GIVE THE TOUCH-TONE
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FREQUENCIES.
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FIRST OF ALL, THE TONES MADE BY A TOUCH TONE TELEPHONE ARE NOT SINGLE TONES,
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THEY ARE A COMBINATION OF TWO TONES, MAKING "DTMF" (DUAL TONE MULTI-
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FREQUENCY). THE NORMAL TONE TELEPHONE DIALS 12 DIFFERENT SIGNALS, BUT IS
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CAPABLE OF DIALING 16 DIFFERENT SIGNALS (SILVER BOX).
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THE POWER REQUIRED BY A KEYPAD IS ABOUT 25 VOLTS, BUT THEY WILL WORK WITH AS
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LITTLE AS 15, THEREBY ALLOWING THE USE OF TWO 9-VOLT RADIO BATTERIES. AS YOU
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MAY HAVE GUESSED, THEY ARE ALSO DESIGNED TO OPERATE WITH A TELEPHONE TYPE
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SPEAKER (AND PHONE LINE), AND NOT THE STANDARD 8-OHM SPEAKER WHICH NEEDS TO BE
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USED FOR ADEQUATE VOLUME. TO ACCOMPOLISH THIS, WE USE A MATCHING TRANSFORMER;
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THIS IS ONE OF THOSE MINIATURE ONES AVAILABLE AT RADIO SHACK ENOUGH OF THE
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THEORY, NOW FOR THE CIRCUIT.
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YOU WILL NEED:
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A TOUCH TONE KEYPAD
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A MINIATURE 1000 TO 8 OHM TRANSFORMER
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(RADIO SHACK # 273-1380)
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A STANDARD 8-OHM SPEAKER
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TWO 9-VOLT RADIO BATTERIES
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TWO 9-VOLT BATTERY CLIPS
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A CASE TO PUT IT ALL IN (OPTIONAL)
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A FEW CONSTRUCTION NOTES; I SUGGEST THAT YOU SOLDER AND TAPE ALL CONNECTIONS.
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IT IS ALSO IMPORTANT TO READ THIS ENTIRE BULLETIN BEFORE ATTEMPTING TO
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CONSTRUCT THIS.
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FIRST, CONNECT THE RED WIRE OF THE TRANSFORMER TO EITHER TERMINAL ON THE
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SPEAKER. NOW CONNECT THE WHITE WIRE FROM THE TRANSFORMER TO THE OTHER TERMINAL
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ON THE SPEAKER. NEXT, CONNECT THE RED (POSITIVE) WIRE OF ONE BATTERY CLIP TO
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THE BLACK WIRE OF THE OTHER BATTERY CLIP. NOW CONNECT THE REMAINING RED WIRE
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ON THE SECOND BATTERY CLIP TO THE GREEN WIRE FROM THE TOUCH TONE PAD. CONNECT
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THE BLUE WIRE FROM THE TOUCH TONE PAD TO THE ORANGE-AND-BLACK STRIPED WIRE
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FROM THE TOUCH TONE PAD. TO THESE TWO WIRES, NOW CONNECT THE REMAINING BLACK
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LEAD FROM THE FIRST BATTERY CLIP. YOU HAVE NOW FINISHED THE POWER CONNECTION
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TO THE KEYPAD. CONNECT THE BLACK WIRE FROM THE KEYPAD TO THE BLUE WIRE ON THE
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TRANSFORMER. NEXT CONNECT THE RED-AND-GREEN STRIPED WIRE FROM THE KEYPAD TO
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THE GREEN WIRE ON THE TRANSFORMER. THE BLACK WIRE ON THE TRANSFORMER SHOULD
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NOT BE CONNECTED TO ANYTHING, ALONG WITH QUITE A FEW WIRES FROM THE KEYPAD.
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THE CONNECTION OF THE KEYPAD IS NOW COMPLETE. ALL YOU HAVE TO DO IS CONNECT
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TWO NINE VOLT BATTERIES TO THE BATTERY CLIPS, AND YOU'LL BE READY TO GO. YOU
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MAY WANT TO MOUNT IT IN A CASE FOR EASY PORTABILITY.
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NOTE THAT THE SILVER BOX MODIFICATION CAN BE MADE TO THIS UNIT, ALLOWING
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COMPLETE REMOTE PHREAKING. WHEN NONE OF THE BUTTONS ARE PRESSED, THIS UNIT
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USES NO POWER, THEREBY ELIMINATING THE NEED FOR A POWER SWITCH, AND EXTENDING
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THE LIFE OF THE BATTERIES.
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THE FOLLOWING ARE THE FREQUENCY COMBINATIONS GENERATED BY EACH BUTTON ON THE
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KEYPAD.
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KEY FREQ. #1 FREQ. #2
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--- -------- --------
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1 697 1209
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2 697 1336
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3 697 1477
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A 697 1633
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4 770 1209
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5 770 1336
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6 770 1477
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B 770 1633
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7 852 1209
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8 852 1336
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9 852 1477
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C 852 1633
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* 941 1209
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0 941 1336
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# 941 1477
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D 941 1633
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ALL FREQUENCIES ARE MEASURED IN HERTZ. NOTE THAT A,B,C AND D ARE NOT NORMALLY
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PRESENT (EXCEPT FOR SILVER BOXES).
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