Labels:text | font | screenshot | black and white | printing | number | paper | document | ink OCR: BELL'S BOXIN' US IN ! PEN PALS WANTED by Tom Edison It should come as no surprise that some of our readers are in the pen. Here's part of one letter: " Finished reading Big Brother Game and am disturbed by the diagrams. He left out connections and parts. I Enjoy your Black & Blue Boxes while you can because in would be glad to help anyone trying to construct these - the next few years (and even sooner if you live in certain for instance, I have a page of instructions for the con- areas!) they're all going to be obsolete ! On May 15, 1976 struction of a drop-in transmitter. Many of his circuits Pa Bell put its new C. C. I. S. system into operation between came from Sams publications and Popular Electronics. Chicago, Ill. and Madison, Wisc. This Common Channel The infinity transmitter will n ...
