The CommRadio CTX-10 rear panel has:
BNC antenna input 50 Ohms
Keyer input jack (3.5mm 3 conductor) for paddles
Audio input/output (6-pin DIN) analog input/output to interface with sound card (data-modes).
Microphone input with limiting pre-amplifier (with built-in compression and noise gate).
Monaural speaker output 3.5mm 3-conductor jack (0.8 Watts, 8 Ohms)
Headset output 3.5mm 3-conductor jack (40 mW, 16 Ohms)
USB Mini-B 2.0 Jack (not powered) for software updates,
I-Q data and radio controls.