2021 – Tangentially Scientific

Dumont RA-502/503 A

This is a very attractive and reasonably sized 1950s black and white television. This will be a longer restoration asRead More

This wire recorder was picked up at a very good price on eBay. The recorder appears to be from 1947Read More

This post is about the repair of a Pioneer CLD-V190 laserdisc player, I bought in “working condition”. When plugged inRead More

I will be updating this page as it develops! Part I: The Unboxing Recently I acquired a Jeol JSM-300T ScanningRead More

This is going to be another long term project with multiple offshoot projects. The first part is to get theRead More

The Eimac vacuum tube was produced in the late 30s and primarily used as part of the power oscillating circuitRead More

This is Sylvania 702AT/R switch vacuum tube. It is dated November 1944 and listed as U.S Army Signal Corp stock.Read More

A photomultiplier tube is one of a few types of vacuum tubes that are still widely used. In essence itRead More

When we look at history we generally find it helpful to divide vast expanses of time into eras, these erasRead More