Low power AM transmitter
EF184
This small single-tube transmitter is designed to broadcast any audio source on the AM band, so that various programs can be heard on all old radios that only have the…
valves
ECL80 Pushpull amplifier
Here I present a push-pull amplifier circuit that uses two ECL80 tubes and is quite simple to build. It’s an interesting amplifier because it uses ECL80 tubes, which are inexpensive…
RCA Q10
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…
Philips BE292U
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…
Philips BX580A
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…
Philips B3X02A
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…