Kenwood TH-22AT Quick Start Manual page 13

Q. Is the tone/encoder unit included in the TS-950SDX?
A. Yes, its on menu number 57
Q. What are the connections for hooking up an amplifier?
A. Pin 4 is relay, Pin 2 is Ground, and Pin 6 is ALC
Q. I have made the right connection for an amplifier, but my amplifier does work why?
A. Go to the back of the radio, and turn the switch Linear Amp to the left for the on position.
Q. Does the TS-950SDX have a built-in keyer?
A. Yes