This an old commercial receiver found in a year 1958 magazine. The circuit uses some transformer available that timer and the transistors are germanium types. The circuit is intended to receive MW stations.
This sophisticated power supply from the 80s uses components from the period, which makes it...
We found this small shortwave transmitter circuit in a 1994 documentation. The frequency of the...
This circuit generates a signal up to a few megahertz depending only on the LC resonant circuit...