- vcf-midatlantic - lists.vcfed.org

Re: [vcf-midatlantic] OT - Ultrasonic board cleaner
by Duane Craps 12 Sep '22

12 Sep '22

Yes, they are germanium glass diodes. Type 1N3592 On 9/11/2022 8:09 PM, Sentrytv via vcf-midatlantic wrote: > > Are the diodes glass diodes and maybe the junction on the diodes were vibrated to the point of failure? > > Sent from: > My extremely complicated, hand held electronic device. > >> On Sep 11, 2022, at 8:04 PM, Martin Flynn via vcf-midatlantic<vcf-midatlantic(a)lists.vcfed.org> wrote: >> >> Duane, >> >> Interesting - What was the failure mode? Mechanical or via an RF induced current? >> >> Martin >> >>> On 9/11/2022 7:50 PM, Duane Craps via vcf-midatlantic wrote: >>> Martin, >>> >>> Be careful: >>> >>> Back when John McCain started the conflagration on the USS Forrestal we had the Forrestal's NTDS computers in the shop to clean up the water and smoke damage. The DTL UNIVAC circuit cards were being run through ultrasonic cleaners. When the first computer was powered up it was completely dead. Turned out that one of the cleaners was at a frequency that wiped out almost all of the diodes on the cards. They ordered thousand of diodes and had people working around the clock to repair the cards. When you get the tester maybe we can give you a card to try. >>> >>> Duane >>> >>>> On 9/11/2022 6:46 PM, Martin Flynn via vcf-midatlantic wrote: >>>> Shopping heated ultrasonic cleaners to clean radio boards prior to repair. >>>> >>>> Have used and owned Cole Parmer units in the past, the Cole-Parmer 08895-76 is the unit I am considering >>>> >>>> Looking for feedback on both other options, and what is the biggest unit that would be practical for the Makerspace >>>> >>>> Martin -- DuaneCraps sdɐɹɔ ǝuɐnp

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Navy Photo Interpreter Computer
by Mike Loewen 11 Sep '22

11 Sep '22

You Navy guys should like this: https://www.youtube.com/watch?v=8WJerG6ox_0 Some Univac hardware there. Mike Loewen mloewen(a)cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/

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Wishlist, September edition
by Dave Shevett 11 Sep '22

11 Sep '22

I wonder if this would be a nice thing for folks to do every once in a while. We all have stuff, we all are interested in supporting the community, we're always wanting more stuff. Sometimes it's nice to let folks know what you've got and what you're looking for... So here's my current "OMG WANT" list * DEC Gigi aka 'VK100' terminal * Northern Telecom Displayphone Plus * Tandy 200 - the big screen version of the Model 100 * IBM Simon (this is hyper-rare, but i used to have one) Things I'm interested in moving * Nokia N810 (I have several of these) * Epson HX-20 (several of these too) * ADDS ASCII terminals * DEC VT100 (might also have a VT102) Whadya got, whadya want? -- Dave Shevett shevett(a)pobox.com

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OT: Hamfests
by Jeffrey Brace 11 Sep '22

11 Sep '22

There is a hamfest in Washington Twp (North Jersey) http://www.arrl.org/hamfests/bara-fall-hamfest-10, Bara Fall Fest. Does anyone know how big this event is? I was going to advertise on ARRL, but I don't want to bump another event which is on the same day. ========================================= Jeff Brace VCF National Board Member Chairman & Vice President Vintage Computer Festival East Showrunner Vintage Computer Federation is a 501c3 charity https://vcfed.org/ <http://www.vcfed.org/> jeffrey(a)vcfed.org

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VCF West 2022 Videos being released now
by Jeffrey Brace 11 Sep '22

11 Sep '22

The VCF West 2022 videos have been processed and have started to be released one per day starting yesterday (Sat 9/10/22). We hope that you enjoy the videos as well as the new intro and outro video that we added! Thanks to Corey for lending us his camera as well as creating the new intro and outro, Kay Savetz for the video editing and processing, and all the great speakers Enjoy! ========================================= Jeff Brace VCF National Board Member Chairman & Vice President Vintage Computer Festival East Showrunner Vintage Computer Federation is a 501c3 charity https://vcfed.org/ <http://www.vcfed.org/> jeffrey(a)vcfed.org

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Only 1468 more to go! VCF YouTube channel
by Jeffrey Brace 11 Sep '22

11 Sep '22

The VCF YouTube channel has 8532 subscribers and counting! The numbers have been steadily going up since VCF East videos have been posted. Can't wait until we get 10,000 subscribers! We are also monetizing the videos which help support the work that we do! ========================================= Jeff Brace VCF National Board Member Chairman & Vice President Vintage Computer Festival East Showrunner Vintage Computer Federation is a 501c3 charity https://vcfed.org/ <http://www.vcfed.org/> jeffrey(a)vcfed.org

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Tektronix manuals that I can bring to party
by Christian Liendo 06 Sep '22

06 Sep '22

if you are interested please let me know, I can bring them and trade for a doughnut. prefer Krispy Kreme no Dunkin. willing to try artisanal doughnuts. Tektronix 8002a processor lab z80 assembler & emulator users manual Tektronix 8560 Multiuser software development unit system users manual tnix version 1 Tektronix 8560 Multiuser software development unit system users reference tnix version 1 Tektronix 8560 Multiuser software development unit text processing package user manual Tektronix 8560 Multiuser software development unit system installation guide Tektronix 8500 modular mdl series assembler specifics users manual Tektronix 8500 modular mdl series assembler core users manual

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ATTENTION! Steering Committee NEWS!
by Chris Fala 06 Sep '22

06 Sep '22

Dear VCF Members, This e-mail is the premier edition of what we hope becomes a regular and substantive communication from the Steering Committee. We hope to keep everyone informed and better engaged in regular operations. Highlights: - New personnel structure within the Steering Committee - Look for upcoming news about the IBM 1130 Full version: The Mid-Atlantic Steering Committee is pleased to announce an exciting organization change. To provide a little background, for a few years we had been anticipating formalizing an Executive Director position. The person in this role would be the manager of regular operations of our museum, warehouse, local events, etc. After very careful consideration and a unanimous vote, we have instead chosen to institute a distributed set of management roles which together account for all the duties of the theorized Executive Director. The result is five roles which we have added to our updated by-laws, specified in section 7 (complete by-laws can be found here): https://vcfed.org/wp-content/uploads/2022/07/VCFMA-Charter-Jul2022.pdf One major benefit of this organizational structure is that the various responsibilities are distributed across a team rather than one person. It also enables us to staff these positions from a wide range of volunteers. The team approach also takes advantage of various skillsets from multiple people. The roles have been initially staffed as follows: - InfoAge Liaison: Steering Committee Chair, currently Chris Fala - Warehouse Manager: Doug Crawford - Museum Manager: Doug Crawford - Event Coordinator: Jeff Brace - IT Manager: Alex Jacocks In case you were wondering, not included in these responsibilities is the Vintage Computer Festival East Showrunner position. That responsibility is assigned by the VCF National Board and is occupied by Jeff Brace. Jeff has also been assigned by the VCF National Board the task of managing the move of our artifacts between our old and new warehouse spaces. We hope that you are as excited as we are about the growth and refinement of our Steering Committee, a cohesive team that has accomplished so much in growing our organization. Personally, I have great optimism for the continued improvement of VCF! Please know that the Steering Committee is always open to ideas, thoughts, concerns, suggestions, etc. We are here to serve the membership, and our only goal is to help VCF to thrive. In other news, please “stay tuned” for additional information regarding our IBM 1130 computer and an exciting project! Sincerely, Chris Fala Chairman of the Vintage Computer Federation Mid-Atlantic Steering Committee

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Learning restoration from experts
by Douglas Crawford 05 Sep '22

05 Sep '22

Hello Local Members: If you are new to vintage computers and would like to get started learning -in person- how to properly handle valuable artifacts we have something coming up for you. We are working on setting up a session of training in combination with our quest to have work done on our PDP-8. We have invited Dave Gesswein to come in and work on the PDP-8 and possibly other equipment too. Dave is figuring out his availability. We may do this as a replacement of the Sept 10/11 workshop. Many of our die-hard repairers are going to be away so the workshop was canceled. But I'm willing to bet a lot of hobbyists are not going to mid-west, and they might want this training if we offered it. Comments welcome here in response, but if you are flat out interested in this kind of training, let me know off-list. Thanks very much Douglas Crawford Mid-Atlantic Museum Manager

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OT / ESD Mats
by Martin Flynn 05 Sep '22

05 Sep '22

Need to purchase ESD mats. Considering BERTECH 2059 series (American made), open to suggestions. Martin

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