I found this circuit in a July 1982 English magazine. The circuit is still viable by simply using the BC548 or BC549 for TR1 and TR2. Wires between stations should be no longer than 15 meters and power can also be supplied from source.
I found this circuit in a July 1982 English magazine. The circuit is still viable by simply using the BC548 or BC549 for TR1 and TR2. Wires between stations should be no longer than 15 meters and power can also be supplied from source.
