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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.
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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.
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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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