I found an atomic clock at the world's largest vintage computer show
Jeff Geerling
Sep 18, 2026 14:00
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Chapters
I thought I had the best time. Then someone brought over a cesium atomic clock, and I wasn't sure.
Segal's law: "A man with a watch knows what time it is. A man with two watches is never sure."
Some of the things I mentioned in the video:
- VCF Midwest: https://vcfmw.org
- ShadyTel: https://shady.tel
- Meinberg GPS Antenna: https://www.meinbergglobal.com/english/products/gps-antenna-converter.htm
- Pumping Station One: https://pumpingstationone.org
- Tattler Solutions WOPR rackmount display: https://tattlersolutions.com/wopr/
- Duchtronix AVR Scope Clock: http://www.dutchtronix.com/ScopeClockH3-1-Enhanced.htm
- My TrueTime Pi configuration: https://www.jeffgeerling.com/blog/2026/truetime-xl-gps-time-server-restomod/
- MacMesh: https://macmesh.xyzzy.computer
- Mr. Macintosh: https://www.youtube.com/c/MrMacintoshBlog
- L2J video on the Prototype Apple Network Server 300: https://www.youtube.com/watch?v=tupEO0mrf0c
- Quadra 800 MiSTer FPGA core: https://github.com/danifunker/MacQuadra800_MiSTer
- PicoPCMCIA: https://www.yyzkevin.com/picopcmcia/
- PC110 Motherboard Recreation: https://github.com/ahmadexp/Open-Source-PC110
- dosdude1: https://www.youtube.com/@dosdude1
- Ron's Computer Videos (helped me get some clips!): https://www.youtube.com/@RonsCompVids
- Retro Tech Foundation: https://www.retrotechfoundation.org
- TAPR TICC: https://tapr.org/product/tapr-ticc/
Support me on Patreon: https://www.patreon.com/geerlingguy
Sponsor me on GitHub: https://github.com/sponsors/geerlingguy
Merch: https://www.redshirtjeff.com
2nd Channel: https://www.youtube.com/@GeerlingEngineering
3rd Channel: https://www.youtube.com/@Level2Jeff
Contents:
Science & Technology
#vcf
#vintage computer festival
#fest
#midwest
#chicago
#schaumburg
#convention
#center
#mac
#ntp
#server
#stratum
#stratum 1
#stratum 0
#stratum 2
#se-30
#se30
#apple
#macintosh
#computers
#ibook
#g3
#wifi
#airport
#graphite
#xserve
#g5
#timing
#time
#service
#services
#initech
#shadytel
#network
#networking
#frequency
#reference
#atomic
#cesium
#pps
#comparison
#clocks
#clock
#oscilloscope
#old
#tic
#interval
#counter
#t1
#adsl
#frame
#relay
#net
#mini
#truetime
#raspberry pi
#chrony
#protocol
#daytime