home *** CD-ROM | disk | FTP | other *** search
- <=-=*=---------------------------=*=-=>
- | White Box Plans |
- | (Uploaded by Agrajag the Prolonged) |
- <=-=*=---------------------------=*=-=>
-
- <=-=*=---------------------------=*=-=>
- | Overview |
- <=-=*=---------------------------=*=-=>
- | |
- | 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. |
- | |
- <=-=*=---------------------------=*=-=>
-
- <=-=*=---------------------------=*=-=>
- | Instructions |
- <=-=*=---------------------------=*=-=>
- | |
- | 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 miniqture 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 Shqck # 273-1380) |
- | A standard 8-ohm speaker |
- | Two 9-volt radio batteries |
- | Two 9-volt bqttery 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 tha remaining |
- | black lead from first battery clip. |
- | You have now finished the power |
- | connection t 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 connested to anything, along |
- | with quite a few wires from the |
- | keypqd. 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) |
- | |
- <=-=*=---------------------------=*=-=>
-