It has this wonderful "wake up" program timer mode. Program the Zinwell to switch to the correct channel at one minute before the correct time, then have your VCR record the channel on the correct minute you want it to record off the Zinwell's Channel 4 output.
It's one little extra step, but it's real easy.
A hack of a lot better than being able to record only one channel.
There is another model out there mentioned on the
CECB unit comparison wiki that has this VCR timer mode ( Max Media LuTRO
MaxMedia LuTRO DTV Converter Box ) , but I haven't seen that one yet anwhere.
So try to get a Zinwell.