I'm not sure I understand your problem. If your system is like mine (Comcast Sacramento Region), the analog converter boxes were set to receive signal on TV channel 3. However when I switched to HD digital service I found that on the DCT-5100 receive digital and analog channel signals on TV channel 4.
remod is just the output channel of the box much like a VCR can output either on 3 or 4 through the RF output to the tv. The channel is selected and hard coded by your local cableco in the firmware of the box.
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