When I was at Orange Coast College in the mid-70s, we had a 370-155 that had non-IBM memory. The College had a microwave link between the Costa Mesa campus and the Huntington Beach campus. The microwave link was at the campus library, and they fired it up about 9AM each week-day. The computer center was in the path between the two campuses. We would get machine checks each morning and about two minutes or so later, the system would IPL and everything would be fine until the next morning. We finally got someone to look at the problem, and if I remember correctly, the microwave dish was slightly out of alignment and once they fixed that, no more machine checks. Lloyd
Sent from AT&T Yahoo Mail for iPad On Sunday, November 12, 2023, 8:55 AM, Paul Gilmartin <0000042bfe9c879d-dmarc-requ...@listserv.ua.edu> wrote: On Sun, 12 Nov 2023 10:48:19 +0100, Bernd Oppolzer wrote: > >At some point he looked out of the window and he saw the radar tower, >which is about >half a mile away and is needed for the traffic control of the airport >nearby. So he speculated > A co-worker had worked for the FAA at a commercial airport near a military airfield. Military controlled its airspace; airport controlled its. He made a scatter plot of where planes vanished from civilian control, thinking it might be useful..He showed it to a military colleague who was aghast that the boundary of military control, classified, was publicly available. I heard a story of a physics lab that tried to operate a computer room next to a spark chamber. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
