This converter for WWV time reference station signals was found at Popular Electronics. The 15 MHz signals are now received on a medium wave radio at 1 MHz.
This short-range experimental transmitter emits a signal with many harmonics, without modulation. It can...
The LM380 is not a modern component and in some cases not easy to find. But if you have one you...
This is the analog part of the previous circuit with the pressure sensor for the altimeter. The...