ocr: BY THE PROGRAMABLE BLUE BOX PETER PIPER The Phone Phreak like everyone else must koep pace with technslegy. We therefore give you The Programable Blue Box. TAP The Box presented here offers excellent stability with - both voltape and temperature. It uses 9 IC's, nll of which are readily available. And usee two ordinary 9 volt alka- line batteriee. Current drain is relatively low 24 ma. in standby, about 30 ma. sending toncs. Circuit Description "i.en a key in iressed,the diode matrix in fip. 1 produces binary code on lines A through D corresponding to the key pressed. Note the code 0000 is not ...
