1 blue coloured box (spray this pink to conceal purpose of device)
1 9v battery
Construction -
The device is very simple to construct and can be made small enough
to fit onto a 10x24 veroboard.
Note: ZTX 300 Transistor
/ collector
base !/
!\
\ emitter
How the Device Works -
The three resistors and the capacitor set the frequency.
If the capacitor is 0.1uF then the resistor value can be calculated
in the following way:
R = 23000000
________
frequency
So, the resistor value for 2600hz would be:
R = 23000000 = 8846.15 Ohms (this is no good, however because it
________ must be more than 10K)
2600
The frequency that the 4047B outputs is then amplified by the two
transistors(a darlington pair) before being put through the loudspeaker.
Using the Device -
1) Dial a long-distance unobtainable number.
2) Hold the speaker against the phone microphone.
3) Send the 2280hz tone by holding the switch down on the device.
4) Pulse/Tone(exchange dependent)dial the exchange number.
5) Dial number to connect to.
For more information on this see 'phreak' on 0943 817010 (24 hours)
** OPEN SOON **
NB: DO NOT CONNECT THIS DEVICE INDIRECTLY OR DIRECTLY TO ANY TELEPHONE
NETWORK IN THE UK.
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Feel free to add your own credits, but don't remove those that are
already there !
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Downloaded From P-80 Systems 304-744-2253 * Since 1980 *