No Auto repeat ?!

[Tony Brock-Fisher]

I can't find the answer to this one in the manual, so it's stupid
question time. I finally got around to wiring up a voice keyer to
CT. (Not a DVP). I can start messages playing fine manually by hitting
F1-F4; but I can't seem to get the RPT function to work. I enter RPT and
a reasonable time value; but nothing happens on the output port.
What am I doing wrong? (CT v9.02).

-Tony, K1KP, fisher@hp-and.an.hp.com