September 2022 - vcf-midatlantic

KIM-1 Boards of the Past
by Jonathan Chapman 19 Sep '22

19 Sep '22

I finally herded together the extant pictures of the KIM-1s I've had in the past and did a writeup: http://www.glitchwrks.com/2022/09/18/kim1-boards-past TL;DR is that during college I found a KIM-1 in an employer's warehouse. Later, I found a box with five more! These were all Virginia Tech surplus, and one of them is likely the first KIM-1 used for classroom instruction there. I'd intended to sell some of them, since who needs six, right? Unfortunately, I was forced to sell all of them, including the one I'd intended to keep for myself, due to economic/financial situations after graduation. I've never seen anyone post about these particular machines, and I haven't seen them exhibited at VCF East, VCF Midwest, or HOPE. None of the sellers contacted me about them after the sale concluded. Is anyone here the owner of one of these particular KIM-1s? Do you know the owner? Did you use KIM-1s while at Virginia Tech? Please let me know! Thanks, Jonathan

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Help Advertising for October VCF Swap Meet 2022
by Jeffrey Brace 18 Sep '22

18 Sep '22

I need help spreading the word about our VCF swap meet. Anyone willing to help can post somewhere and record it here: https://docs.google.com/spreadsheets/d/1vije1Q0v1IUzmXiXn0imvZpZ6Yxv76vovnv… Thanks! ========================================= 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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OT: Rechargeable Lithium Batteries
by Jeffrey Brace 12 Sep '22

12 Sep '22

Does anyone have any experience with D type rechargeable Lithium batteries? I'm looking for a reliable brand. Some are needed for a mousetrap for the museum and warehouse as the regular alkaline ones seem to have only three uses after zapping mice. ========================================= 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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Help repairing oscilloscopes
by Neil Cherry 12 Sep '22

12 Sep '22

I have a couple of CDL Oscilloscopes that are in need of repair. If I were to bring them to a repair workshop would someone be able to help me fix them. I tried to disassemble one of them but was stopped in my tracks pretty quick. Wow are they packed tight. Also what would I need to repair them? -- Linux Home Automation Neil Cherry kd2zrq(a)linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies KD2ZRQ

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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 10 Sep '22

10 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 10 Sep '22

10 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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