Found in American documentation from the 1990s, this TTL circuit operates at frequencies typically up to 100 kHz. Input signals must be rectangular.
This circuit was found in an ancient American documentation. The integrated circuit is of the time...
Found in an older Radio Craft, this circuit covers the aerial band from 118 to 136 MHz. No...
This amplifier was found in a Radio Electronics of the 90s. The circuit uses unusual operational...