On September 6, 2006 at 02:23, scoop city said...
The 3.5 jack on the Motorola is for an IR emitter output
of the cable box to control a VCR. UR out of luck for
a non emitter install.
Ach, that 'splains it ... I was pretty d*mn surprised to see a 3.5mm jack labeled "IR" on the back of the dct3412 - should've figured it was too good to be true!