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 experimental good sensibility radio was obtained from a 1968 magazine. The magazine no longer...
This circuit was found in Popular Electronics. Its purpose is to warn the visually impaired when a glass...
Found in a 1965 Electronic Design, this circuit makes it possible to select signals with an...