Placed near a common receiver, this oscillator is intended to generate a beating signal to receive RTTY or SSB communications. The circuit is from old telecommunications documentation.
Found in documentation from the 1980s, this amplifier uses an integrated circuit from the time....
We obtained this circuit from a 1993 documentation. The circuit has 7 current ranges that are...
This circuit was found in an 80's General Electric documentation. The circuit uses uncommon...