Category Archives: Projects

Stratum 1 NTP Rubidium Holdover

Posted on 2026-06-19 by Nigel VH

I’ve posted a number of times about building NTP Stratum 1 systems based on GPS receivers outputting PPS signals. Sometimes, however, GPS signals aren’t always reliable if you don’t have access to an external antenna, so I’ve been wanting to … Continue reading →

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Stained Glass

Posted on 2025-12-22 by Nigel VH

I recently felt the urge to try my hand at some stained glass work. I remember my mom doing it when I was a kid, and recall having pieces on display in the windows in our home. Particularly I remember … Continue reading →

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Sound Insulated Rack Refresh

Posted on 2025-01-24 by Nigel VH

I keep my servers and networking gear in an enclosed, sound insulated rack in my garage. It keeps the noise down, makes it easy to duct the heat outside in the summer-time, and is a setup I’ve been quite happy … Continue reading →

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Numitron Clock

Posted on 2025-01-10 by Nigel VH

After watching a recent Technology Connections video about Numitron tubes, I was inspired to pick some up to add to my dragon’s hoard of junk. A quick visit to eBay later, and a few less dollars in my bank account, … Continue reading →

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HP 3478A Repair

Posted on 2024-04-26 by Nigel VH

I’ll start with noting that these repairs on the HP 3478A (and many other older HP instruments) are well documented amongst the community. I mostly referenced the excellent write-up here by Tom. I mostly followed the procedure described, I backed … Continue reading →

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