This electronic Morse Key for telegraph message transmission was found in an American 1980s amateur radio documentation. The circuit uses TTL technology and must be powered by a 5V voltage.
This circuit was found in a 1976 documentation. It can be used with old tape recording mechanisms for...
Other series amplifiers such as the MC3301, MC3401 and LM2900 can be used on this circuit. We found...
This S-meter circuit was found in a 1976 publication. The circuit is used to measure the signal...