Apollo vet Sy Liebergot shows Ars how NASA got men safely to the moon and back.
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Hard to even glance in that direction without getting angry at *everyone*Major General Thanatos":23qbjahi said:You had every opportunity to make this article political. Thank you for not doing so. Beautifully well done story!
NASA still uses something similar today in the FCRs and the MER at JSC (and from other centers, too, from pictures I've seen). Today it's all digital, though. There are panels at every station called DVIS panels, for Digital Voice Intercommunications Subsystem, pronounced like "divas". Some more info here. I have some pics, too, from when I was last in the MER in 2007--front view, with DVIS at the edge of each desk, and back view, with signs reminding everyone to use their audio loops instead of yelling.pusher robot":34juyr6j said:I'm intrigued by the use of the voice loop system. It's such a simple but powerful method of group communication. Is there any one that still uses always-on voice channels that you can selectively monitor or transmit on in their jobs? It seems like it would be a simple thing to do with telephony, but I've never seen software for it. Instead, we have to muck about with conference bridges and station-to-station calls.
In researching the technology, that was the part that shocked me the most. Everything else was reasonable--big mainframes, no software controlled panels, all hard wiring, that kind of thing. But the display stuff threw me. I had to read and re-read that section of PHO-FAM001 over and over again to make sure I was understanding it right, and even after that I sought out some corroborative info. Sy's descriptions clinched it. It really was that crazy--slides and CRTs, filmed by a video camera. Totally wild.Bad Monkey!":38wmy1kq said:I always wondered how they created the seemingly ahead of their time display readouts, and now I know!
pusher robot":3666oxlw said:Oh my gawd, you have no idea how many hours I've spent trying to glean all this info from around the web - and here it is in one perfect article. Brilliant! Thank you, thank you, thank you!
I'm intrigued by the use of the voice loop system. It's such a simple but powerful method of group communication. Is there any one that still uses always-on voice channels that you can selectively monitor or transmit on in their jobs? It seems like it would be a simple thing to do with telephony, but I've never seen software for it. Instead, we have to muck about with conference bridges and station-to-station calls.
AER":t37rejw1 said:Wow, excellent article. Great job.
boydwaters":2fnzbcv8 said:Wow. Just wow.
I can still smell the GSA coffee...
Whoops--looks like I had it right for most of the article, but missed that one caption. Fixed!ka1axy":1n0u6k5w said:small correction: PABX is Private *Automatic* Branch Exchange, not "Area". The "Automatic refers to the fact that calls are completed "automatically", without the need for a switchboard operator.