176 lines
5.7 KiB
Plaintext
176 lines
5.7 KiB
Plaintext
PORTABLE BLUE BOX PLANS BY FORD PREFECT
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(C)OPYRIGHT 5/21/84 TAKEN FROM 2600 MAG.
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DIAGRAM #1:
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(A)
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-------------------------------------
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D| 1| 2| 3I 4| 5| 6| 7| 8| 9| 0| K| S|
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/ / / / / / / / / / / / /
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| | | | | | | | | | | | |
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| -. -. -. -. -. -. -. -. -. -. -. -.
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| |V |V |V |V |V |V |V |V |V |V |V |V
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| || || || || || || || || || || || ||
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| |---.-----.--------.-----------------
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| | | || | || || | || || || || ||
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| | | |------.--------.--------------
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| | | | | | || | | || || || ||
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| | | | | | |---------.-----------
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| | | | | | | | | | || || ||
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| | | | | | | | | | |---------
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| | | | | | | | | | | |---.--
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| V V V V V V V V V V V V
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| |------------------------------------
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| | | | | | | | | | | |
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| ---.-----------------------.------
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| | | | | | | | |
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| ---.--.---------------------
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| | | | | |
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| ---.--.--.-----.---
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|--------------------------------------
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DIAGRAM #2:
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---700--- (B)
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| ------- (C)
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---900--. |---|2 10|--|(--
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| | | | |
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--1100--.----|-.-|4 11|-----.--|
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| | --|5 | | |
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--1300--. | | 12|-/|/-- V
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--1700--| --| |6 | (D)
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| | | 78 | <--25K POT.
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---900--| (A)| -------
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| | |-|
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--------. |---/|/|/---
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1100 | (E) |
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--------.---- |
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1300 | (*) |
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--------. -------
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| | 3 | <--OP-AMP
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--2600--- (A)--|7 |
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|-----|4 |
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V -|2 |
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(*)25K POT. SHOULD || 6|
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BE THE SAME |-----|-
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AS THE ONE TO |-----.
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THE ABOVE RIGHT. |
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BOTH GO TO PIN |
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3 OF THE OP-AMP. (| |
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(G) ||-)|-|
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|| (H)
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(|-|
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V
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DIAGRAM #3:
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(J)
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(I) ---------|---|
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|-||||||--.| |1 |
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V | | 2|--.-- +10V
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--|(/|/-.|3 | /
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(K)(M) |----- )
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--------| (L)
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DIAGRAM #2 SHOULD CONNECT TO THE RIGHT OF DIAGRAM #1, MY 40 CHARACTER DISPLAY
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REQUIRES I CUT IT OFF HERE. IF YOU CUT A PRINTOUT OF #2 OUT AND PLACE IT
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TO THE RIGHT OF #1 THEY SHOULD MATCH UP PERFECTLY. DIAGRAM #3 IS THE SCHEMATIC
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FOR THE POWER SUPPLY. 1 AND 2 OF COURSE ARE THE BOX ITSELF.
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NOTE: | |
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-.- ---
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THESE WIRES THESE WIRES
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CONNECT. DON'T.
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LEGEND:
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(A) +10 VOLT (THIS IS WHERE THE POWER
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SUPPLY CONNECTS TO THE
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BOX.)
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(B) 8038 IC
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(C) .010F MYLAR CAP.
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(D) 82K RES.
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(E) 100K RES.
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(F) 741 OP-AMP
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(G) 8 OHM SPEAKER
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(H) 100F CAPACITOR
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(/) SPST MOM CONT NO PUSHBUTTON SWITCH
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(V) 1N914 DIODE
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(I) (2) 9V BATTERIES
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(J) LM317T
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(K) .010F CAPACITOR
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(L) 470 OHM RESISTOR
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(M) 3.3K RESISTOR
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(V) TO GROUND
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PARTS DESCRIPTION:
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(A) CONNECT THE OUTPUT FROM THE POWER
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SUPPLY HERE.
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(B) 8038 WAVEFORM GENERATOR
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(C) .010F MYLAR CAPACITOR
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(D) 82K RESISTOR (YOU WILL HAVE TO USE
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2 OR MORE IN SERIES.)(RESISTENCE IS
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ADDITIVE IN SERIES.)
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(E) 100K RESISTOR (5% IS BEST.)
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(F) 741 OP-AMPLIFIER
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(G) 8 OHM SPEAKER
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(H) 100F CAPACITOR
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(I) 2 9V BATTERIES IN SERIES
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(J) LM317T VOLTAGE REGULATOR
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(K) .010F CAPACITOR
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(L) 470 OHM RESISTOR
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(M) 3.3K RESISTOR
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(/) SINGLE-POLE SINGLE-THROW MOMENTARY-
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CONTACT NORMALLY-OPEN PUSHBUTTON
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SWITCH.
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(V) 1N914 SIGNAL DIODES
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RADIO SHACK PARTS NUMBERS:
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(B) 276-2334 (C) 272-1065 (E) 271-1347
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(F) 276-007 (H) 272-1065 (J) 276-1778
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(K) 272-131 (L) 271-019 (M) 271-019
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(/) 275-1547 (V) 276-1122
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THE SPOT ON THE DIAGRAM THAT HAS 700, 900, ETC. SHOULD BE FILLED IN WITH A 25K
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MULTI-TURN POTENTIOMETER (VARIABLE RESISTOR). THE 15-TURN POT FROM RADIO
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SHACK (#271-340) WILL WORK IF A 1/4 WATT, 5%, 5K RESISTOR IS PUT IN SERIES.
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THE EASIEST WAY TO TUNE THE BOX IS TO PLAY BOTH IT AND A SAMPLE OF THE TRUE
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SOUND TOGETHER, THEN ADJUST THE BOX UNTIL ONLY 1 NOTE CAN BE HEARD. AS
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INACCURATE AS THIS SOUNDS, THIS IS MORE THAN ACCURATE ENOUGH FOR THE FONE
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COMPANY. THE APPLE WITH AN APPLE CAT MODEM, THE ATARI, THE COMMODORE, AND THE
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TEXAS INSTRUMENTS CAN ALL GENERATE THE NEEDED TONES.
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THESE PLANS ARE BASED ON A SET OF PLANS I (FORD PREFECT) RECEIVED TWO YEARS
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AGO. THEY WERE ALMOST ILLEGIBLE AND THE POWER SUPPLY INCLUDED OUTDATED PARTS.
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THE TOTAL COST IS SLIGHTLY ABOVE $50 BUT WHEN PROPERLY ASSEMBLED IT WILL WORK
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PERFECTLY. (THESE PLANS HAVE BEEN FIELD TESTED!)
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(THIS SCHEMATIC HAS BEEN COPIED BY SALLY RIDE SPACE CADET FROM THE OCTOBER '85
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ISSUE OF 2600 MAGAZINE. THE ONLY TRUE AND RELIABLE PUBLICATION FOR PHREAKS AND
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HACKERS. SUBSCRIPTIONS ARE $12 A YEAR, BACK ISSUES MAY BE PURCHASED FOR $2
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EACH. WRITE TO:
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2600
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P.O. BOX 752
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MIDDLE ISLAND, NY
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11953-0752
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MAKE CHECKS PAYABLE TO 2600 ENTERPRIES, INC. OR, CALL 2600 AT 516-751-2600,OR
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CALL THEIR BBS THE PRIVATE SECTOR ON 201-366-4431.
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SYSOPS MAY USE THIS FILE IF RETAINED IN IT'S ENTIRETY. FOR ANY SUGGESTIONS,
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ADVICE OR COUNCIL YOU MAY CONTACT SALLY ON ANY ONE OF THESE EXCELLENT BBS, THE
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TWILIGHT ZONE, STRONGHOLD EAST ELITE, SPEED DEMON ELITE. AND, MANY OTHER BBS AS
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WELL, CHECK THE USER LIST I MAY BE THERE.
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