This commercial receiver for the mid-wave range of the 1960s was found in Japanese documentation at the time. The supply is 9 V, and the configuration is superheterodyne type.
Found in a November 1977 Radio Electronics magazine, this digital circuit was described in an...
This powerful transmitter for the 27 MHz band was found in a Japanese publication from 1961. The...
This circuit was found in Radio Electronics magazine from April 1961. The device has a slot for...