89 lines
3.5 KiB
Plaintext
89 lines
3.5 KiB
Plaintext
White Box Plans
|
|
(Uploaded by The Mystic)
|
|
|
|
This article will tell you how to change a normal touch tone
|
|
keypad and convert it to a portable unit. In addition, we
|
|
give the touch-tone frequencies.
|
|
|
|
First of all, the tones made by a touch tone telephone are not
|
|
single tones, they are a combination of two tones, making "DTMF"
|
|
(dual tone multi-frequency). The normal tone telephone dials 12
|
|
different signals, but is capable of dialing 16 different signals
|
|
(see bulletin on silver boxes).
|
|
|
|
The power required by a keypad is about 25 volts, but they will
|
|
work with as little as 15, thereby allowing the use of two 9-
|
|
volt radio batteries. As you may have guessed, they are also
|
|
designed to operate with a telephone type speaker (and phone
|
|
line), and not the standard 8-ohm speaker which needs to be used
|
|
for adequate volume. To accompolish this, we use a matching
|
|
transformer, this is one of those miniature ones available at
|
|
Radio Shack. Enough of the theory, now for the circuit.
|
|
|
|
You will need:
|
|
|
|
A touch tone keypad
|
|
A miniature 1000 to 8 ohm transformer (Radio Shack # 273-1380)
|
|
A standard 8-ohm speaker
|
|
Two 9-volt radio batteries
|
|
Two 9-volt battery clips
|
|
A case to put it all in (optional)
|
|
|
|
A few construction notes, I suggest that you solder and tape all
|
|
connections. It is also important to read this entire bulletin
|
|
before attempting to construct this.
|
|
|
|
First, connect the RED wire of the transformer to either
|
|
terminal on the speaker. Now connect the WHITE wire from the
|
|
transformer to the other terminal on the speaker. Next, connect
|
|
the RED (positive) wire of one battery clip to the black wire of
|
|
the other battery clip. Now connect the the remaining RED wire
|
|
on the second battery clip to the GREEN wire from the touch tone
|
|
pad. Connect the BLUE wire from the touch tone pad to the
|
|
ORANGE-and-BLACK striped wire from the touch tone pad. To these
|
|
two wires, now connect the remaining black lead from first
|
|
battery clip. You have now finished the power connection to the
|
|
keypad. Connect the BLACK wire from the keypad to the BLUE wire
|
|
on the transformer. Next connect the RED-and-GREEN striped wire
|
|
from the keypad to the GREEN wire on the transformer. The BLACK
|
|
wire on the transformer should not be connected to anything,
|
|
along with quite a few wires from the keypad. The connection of
|
|
the keypad is now complete. All you have to do is connect two
|
|
nine volt batteries to the battery clips, and you'll be ready to
|
|
go. You may want to mount it in a case for easy portability.
|
|
Note that the silver box modification CAN be made to this unit,
|
|
allowing complete remote phreaking. When none of the buttons
|
|
are pressed, this unit uses NO power, thereby eliminating the
|
|
need for a power switch, and extending the life of the
|
|
batteries.
|
|
|
|
The following are the frequency combinations generated by each
|
|
button on the keypad.
|
|
|
|
KEY FREQ. #1 FREQ. #2
|
|
--- -------- --------
|
|
1 697 1209
|
|
2 697 1336
|
|
3 697 1477
|
|
A 697 1633
|
|
|
|
4 770 1209
|
|
5 770 1336
|
|
6 770 1477
|
|
B 770 1633
|
|
|
|
7 852 1209
|
|
8 852 1336
|
|
9 852 1477
|
|
C 852 1633
|
|
|
|
* 941 1209
|
|
0 941 1336
|
|
# 941 1477
|
|
D 941 1633
|
|
|
|
All frequencies are measured in Hertz
|
|
Note that A,B,C and D are not normally present (except for silver boxes)
|
|
|
|
Downloaded From P-80 Systems 304-744-2253
|