November 2025 - vcf-midatlantic

OT / IP phones available for HoIP usage.
by Martin A Flynn 03 Dec '25

03 Dec '25

Provided you pick them up at VCF East 2026: CDL is making available Polycom VVX411 phones for any member MARCH/VCF who also holds any class of amateur radio license. One to a customer, This model is already tested and works with the HoIP service. https://hamsoverip.com/ Replies off list to reduce clutter... Martin Flynn

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Source Open House/Party with Usagi Electric – Bendix G-15: Oldest Working Computer in the USA!
by Bob Roswell 30 Nov '25

30 Nov '25

You are invited to the Usagi Electric<https://www.youtube.com/@UsagiElectric> Bendix G-15 Open House and Holiday Potluck Party at the System Source Computer Museum<https://museum.syssrc.com/> on Friday, December 5th and Saturday, December 6th. David Lovett of Usagi Electric fame will attend and describes the open house here.<https://www.youtube.com/watch?v=ZLnrKwQ1T2A> Visitors will see a live demonstration of the newly restored Bendix G-15, the oldest working computer in North America! David will talk about the restoration including programming languages and music programs. There will be museum tours on both days and during the holiday party. Regular museum admission fees apply. We are also hosting our first Museum holiday potluck party at 3pm Saturday. There will be video games, a Jeopardy tournament and interactive vintage computers. Please bring a dish to share. Open House: Friday from 12pm – 5:30pm, Saturday from 10am – 3pm Location: 338 Clubhouse Road, Hunt Valley MD Registration: * https://museum.syssrc.com/artifact/events/3000/ Bob Roswell broswell(a)syssrc.com 410-771-5544 ext 4336 Computer Museum Highlights<http://museum.syssrc.com/> [cid:image001.png@01DC621D.1F1DE9E0]

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OT / Host site request, cable needed
by Martin A Flynn 30 Nov '25

30 Nov '25

CDL is adding flood sensors to the environmental alarms in the basement s of 9001 (the hotel) and 9003 (the cottage across the street) to support IA. Need to source 5 conductor, stranded, tinned cable. shielded 18 gauge preferred Anyone have 50 feet of something similar in their parts bin? Picture of the Liebert LT410 Leak Detection Sensor and it's wall-wart sitting on the bench at CDL - http://compdecon.org/wp-content/uploads/2025/11/IMG_1071.jpeg Martin

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Re: [vcf-midatlantic] vcf-midatlantic Digest, Vol 90, Issue 14
by Michael Thompson 30 Nov '25

30 Nov '25

> On Nov 27, 2025, at 7:07 AM, vcf-midatlantic-request(a)lists.vcfed.org wrote: > > Send vcf-midatlantic mailing list submissions to > vcf-midatlantic(a)lists.vcfed.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.vcfed.org/mailman/listinfo/vcf-midatlantic > or, via email, send a message with subject or body 'help' to > vcf-midatlantic-request(a)lists.vcfed.org > > You can reach the person managing the list at > vcf-midatlantic-owner(a)lists.vcfed.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of vcf-midatlantic digest..." > > > Today's Topics: > > 1. LSSM VAX-11/780 success (Dave McGuire) > 2. Re: LSSM VAX-11/780 success (Bob Roswell) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 26 Nov 2025 22:54:22 -0500 > From: Dave McGuire <mcguire(a)neurotica.com> > To: vcf-midatlantic <vcf-midatlantic(a)lists.vcfed.org> > Subject: [vcf-midatlantic] LSSM VAX-11/780 success > Message-ID: <546a848e-d388-4f15-823f-c8ac65baf52a(a)neurotica.com> > Content-Type: text/plain; charset=UTF-8; format=flowed > > > I am pleased to announce that we at LSSM have just gotten our > VAX-11/780 up and running! > > Now we have to clean up the debugging and repair mess, clean up the > cabling, arrange for a permanent system disk, etc, then we will declare > it an "operational exhibit". Once that's done, it will be on HECnet > whenever it's up and running. > > Of course all are welcome to come to LSSM in person and run the > machine. (feel the rumble in the floor, etc) > > -Dave > > -- > Dave McGuire, AK4HZ > New Kensington, PA Very cool Dave. Standard power supplies? Need a CI interface for it?

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NCR Deskmate CP/M format
by Herbert Johnson 29 Nov '25

29 Nov '25

> I am trying to understand the disk layout for a NCR Deskmate CP/M system https://oldcomputers.dyndns.org/public/pub/rechner/ncr/dmv/manuals/ncr_dmv_… Manual page 3-3. Decision Mate V "the formatting facility designates the surface 1 tracks with the track numbers 40 through 79." That suggests (but doesn't require) that files proceed from surface 0 track whatever, track whatever+1, ...., 39, surface 1 track 40, 41, ... 79. But how it's formatted may not correspond to the "logical order". Earlier in the document, Boot, BIOS, CCP and BDOS are on the disk side 0 and the first 3 track. The "acid test" would be to find CP/M-80 asm.com on the NCR disk and walk through sectors to see where it lives. I assume you can read hex codes. If you obtain a known asm.com binary elsewhere (pretty common) as a single file, you can pace yourself through that known binary, to find the corresponding unknown binary on the NCR diskette. if asm.com on the NCR disk is the earliest file, then it ought to start after the end of the directory sectors. Of course, it may not. http://www.cpm.z80.de/download/bootdmv.zip Is this where you found the disk image? Regards Herb -- Herbert R. Johnson, New Jersey USA https://www.retrotechnology.com OR .net preserve, recover, restore 1970's computing email: hjohnson AT retrotechnology DOT com or try later herbjohnson AT comcast DOT net

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LSSM VAX-11/780 success
by Dave McGuire 29 Nov '25

29 Nov '25

I am pleased to announce that we at LSSM have just gotten our VAX-11/780 up and running! Now we have to clean up the debugging and repair mess, clean up the cabling, arrange for a permanent system disk, etc, then we will declare it an "operational exhibit". Once that's done, it will be on HECnet whenever it's up and running. Of course all are welcome to come to LSSM in person and run the machine. (feel the rumble in the floor, etc) -Dave -- Dave McGuire, AK4HZ New Kensington, PA

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OT / Camp Evans Specific
by Martin A Flynn 28 Nov '25

28 Nov '25

I know this is the same date as Festivus, however trying to squeeze in one more work day in 2025 to catch up on the stray ends at Camp Evans. Plan is Saturday, 12/13/2025, Would start at 10:00 AM with a hard stop at 2:00 Plan of the Day: * Assemble a new network backboard for 9032B / 9032C, and install in the furnace room of 9032C. On that, could someone grab one of the 2 foot x 4 foot backboards in the studio and paint it black as prep work? * Install the additional memory and new CPU in the firewall servers. * Assemble the PDU to UPS power cables in 9059 * Install the cables for the new cameras to cover second street in the RTM Time permitting: * Drill the Building 9003 basement floor to bolt down the network rack using the Hilti chemical anchors. Reply off-list if you have availability Martin

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Festivus - Dead 34" monitor; does anyone want it?
by John Heritage 28 Nov '25

28 Nov '25

Hey folks - I hope all is well; I have a ~ 10 year old LG 34UM95 that my father was using that died during a power outage recently. It's a 3440x1440 60hz IPS display, and it won't power on. It's a "flat" (no curve) 21:9 screen, and rather than e-Waste this I was wondering if anyone would want this? I can drop off at Festivus. (It *appears* the power supply is working and there may be something wrong inside the monitor. I haven't done any substantial diagnosis -- and it's just sitting in it's original box with stand right now in my garage). Thanks! John

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Burger Becky has died
by Jeffrey Brace 17 Nov '25

17 Nov '25

https://www.pcgamer.com/gaming-industry/legendary-game-designer-programmer-… She was a great person with lots of accomplishments in vintage computer history. I was grateful to have met her and had her come talk at VCF East and VCF West. She will be missed! Jeff Brace

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Looking to buy 2 new 9" CRT tubes
by Neil Cherry 17 Nov '25

17 Nov '25

Yes, I know I missed them at the swap meet, oops. Now I'm looking for one tube for a Mac SE and the other tube for a Sanyo VM4509. Any recommendations? -- Linux Home Automation Neil Cherry ncherry(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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