ocr: MEMORIZE AND BURN The Red Boxes of the future won't be as simple as befors. We reported in the last issue that the new Red Box tones are 2200 and 1700 Hz. The old 2200 Hz Red Boxes must be Switch modified by adding the extra 1700 Hz. oscillator. We have (OPTIONAL) pictured, for informational purposes only, a 1700 Hz. OSC- illator. It is a simple matter to add this to the Red Boxes 315K in Issue 16 or Issue 25, To add this to the Issue 18 Red .01 100K Box, one would conrect point A to V+ line after the on-off 002 F -W switch, just as the existing oscillator is now connected in M 100K that Box. ...
