All saturated switching mode solid state RF amplifier

In an RF signal cable communications system:

• an RF signal source;
• a keying signal source;
• all saturated switching mode solid state logic element means having a plurality of inputs including input connective means from both said RF signal source and said keying signal source;
• with output connective means from said logic element means to cable in said cable communication system as an RF power amplifier stage transmitting to the cable communication system;
• wherein said all saturated switching mode solid state logic element means includes a plurality of individual all saturated switching mode solid state logic element devices connected in series cascade at an RF transmitter location;
• and with keying signal being fed through connective means from said keying signal source as half of dual inputs to said logic element devices.