The operational amplifier used is not common today, but the circuit can be implemented with modern operational ones. The gain is 1000 and the source must be symmetrical.
The author of this project found in a 1980 documentation gives the radio in two versions: the...
Found in the August 1982 issue of Radio Electronics magazine, this circuit lights LEDs in sequence...
CTS IoT Quartz Crystals Available through Mouser Electronics, CTS quartz crystals are especially suited...