[email protected] wrote: > There was also the fun of setting a radio in specific places on the > main control panel and listen to the music it played. Somewhat > better than the printer banging away as you'd get actual tones to > play.
An AM radio in the vicinity of an IBM 360/30 and 360/40 would definitely sing to you at the proper frequency. I was a third-shift operator in a former life, and a properly-tuned AM radio would let you know clearly when the machine was idle, and with a little practice, a rough idea of what it was doing :-) The machine cycle time of a 360/30 was 1 microsecond (fact), placing much of the RF noise in the AM band (at least that was my guess). Jeff _______________________________________________ Fun and Misc security discussion for OT posts. https://linuxbox.org/cgi-bin/mailman/listinfo/funsec Note: funsec is a public and open mailing list.
