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.
Found in a 1990s Popular Electronics, this circuit produces a tone on a small speaker. The keyer...
Found in a 90s Popular Electronics, this circuit monitors an RF signal providing a DC output. The...
We found this circuit in an English publication from 1980. It provides a logical output signal when...