Roselson Stereoletta (Part 1)
The Roselson Stereoletta is a radio-record player cabinet manufactured in Spain during the 1960s–70s by the Roselson company, based in Barcelona. It was relatively popular at the time and was…
Circuits, hardware, and classical computing.
The Roselson Stereoletta is a radio-record player cabinet manufactured in Spain during the 1960s–70s by the Roselson company, based in Barcelona. It was relatively popular at the time and was…
After building the previous FM valve receiver, I recently constructed another one based on it—this time deviating a bit from the original design… using P-series television tubes, the kind that…
Here is my latest build: a vacuum tube FM superheterodyne receiver.This project was born out of frustration with medium wave (AM) broadcasting: the constant parasitic noise, the lack of stations,…
This interesting radio was given to me for repair by a teacher. She explained that it had belonged to her grandfather, and when it broke down, her mother tried to…
This small radio was brought to me for repair as a birthday gift for a friend’s parents — he wanted to give them the radio in working condition. At first…
When I bought this radio, it was completely dead — only a dial light would dimly turn on, the tubes didn’t seem to light up, and I started to smell…
This tabletop radio was working perfectly when I bought it. However, as it was being used, it developed some minor faults, which I fixed as they appeared. This radio has…