Heard this amusing term used in the latest video from Mr. Carlson's Lab.
He repairs and restores a Beckman Shasta Model 702A linear power supply with vacuum bulbs.
Power Supply Repair Restoration And Modification! (1h34min)
https://youtu.be/4HO-ZNdvNa4?t=190
https://en.wikipedia.org/wiki/807_(vacuum_tube)#Slang
>Every Ham needs a 'cold 807' from time to time. From WAY back, a cold beer was called "an 807" by hams.
Lots of other goodies on that site.
https://www.wb4iuy.net/wb4iuy1h.htm
[807 tube](https://poal.co/static/images/3afef36aceb93103.png)
