Pearl Box Schematic

                            ==Phrack Inc.==

                 Volume Three, Issue 28, File #5 of 12

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             ||                                        ||
             || A Real Functioning PEARL BOX Schematic ||
             ||                                        ||
             ||        Written, Tested, and Used       ||
             ||                                        ||
             ||               by Dispater              ||
             ||                                        ||
             ||              July 1, 1989              ||
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Introduction: After reading the earlier renditions of schematics for the Pearl Box, I decided that there was an easier and cheaper way of doing the same thing with an IC and parts you probably have just laying around the house.

What Is A Pearl Box and Why Do I Want One?

 A Pearl Box is a tone generating device that is used to make a wide range
 of single tones.  Therefore, it would be very easy to modify this basic
 design to make a Blue Box by making 2 Pearl Boxes and joining them
 together in some fashion.

 A Pearl Box can be used to create any tone you wish that other boxes may
 not.  It also has a tone sweep option that can be used for numerous things
 like detecting different types of phone tapping devices.

Parts List:

    CD4049 RCA integrated circuit
    .1 uF disk capacitor
    1 uF 16V electrolitic capacitor
    1K resistor
    10M resistor
    1meg pot
    1N914 diode
    Some SPST momentary push-button switches
    1 SPDT toggle switch
    9 Volt battery & clip
    and miscellaneous stuff you should have laying around the house.

State-of-the-Art-Text Schematic: + 16V 1uF - || | ! ! || | _ | _______________________ || |/| 8ohms ||:|:_| | | | | | 9 10 11 12 13 14 15 16 | | | ||| | CD4049UBE | | | |1__2__3__4__5__6__7__8| : | _ | | || || | ||[-] | | ! ! : [b] | |____| [a] | : : | [t] | ! 1N914 ! ! [t] ||/|[+] : || : : | | | | 10M | | |///_| | | | | |_____||| | <-- These 2 wires to the center pole || | | of switch. .1uF 50V | | | | | |______ | [Toggle Switch]________ | | | | ___ | | | | o o | | | | ///_| || |///_///\ | | ^ | 1K ^ | || ___ | || | o o | | ///_| |_| (pAakala Administrator: Gary W. Krumbine Gen Directorate Of Post & AT&T Information Systems Phone: 35806921730 Lincroft, NJ 07738 Phone: +1 201 576 2658

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