The Slicer Schematic

    This is a schematic diagram of the slicer which will be built. Do not let the simple nature of the circuit fool you. It has been tested against every other slicer diagram available on the Internet and found to out perform them all, being able to work with a wide variety of signals and audio band widths from the scanner. It can be used with any of the software outlined and can decode FLEX, GOLAY and POCSAG signals from scanners with audio bandwidths between 5 Khz and 30Khz. It is important not to substitute any parts because the success of the circuit comes from the characteristics of the 4558 Op-Amp.

 

Parts List

    Here is the complete list of necessary components to build the data slicer which will be outlined. It does not cost much more then $7.00 - $10.00 dollars as long as the parts are purchased surplus. This is because the slicer is no more then a device which will present a LOW (-12V) or a HI (+12V) when the input signal crosses below or above the zero crossing (0V). This data is then decoded by the software using the slicer.

    As far as necessary tools go, one will obviously need a soldering iron and rosin core solder along with an Ohm meter to check your connections, a dental pick to correct any trace connections, a wire stripper, a hot glue gun and scissors.

    Gather all of the components before beginning and be sure to double check the values.

 

Part Number

Component

Average Cost

IC1

4558 Op-Amp I.C.

$2.00

C1

0.1 Microfarad Capacitor

$0.25

R1

100 K Resistor.

$0.25

D1 - D4

1N4001 Diodes

$1.00

 

8 pin IC DIP socket

$0.25

 

DB-25 Female solder style connector.

$0.75

 

12" of 22 gauge multistrand wire

$0.25

 

24" of mono audio cable with mono plug.

$1.75

 

DB-25 plastic hood open at both ends.

$1.00

 

A cut section of project ready perf-board.

$0.50

 

 

Total Cost: $8.00

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