got the same recorder last year, great bit of gear. i had the same problem as you and i have it hooked up the way u want. also when u are going to record something make sure u selet the recording source, either scart or the rf input, i think thats the option.
to hook it up check out page 14 on the manual that comes with the recorder, this is how i have mine set up, can record something on sky and then switch to the terrestrial and vice versa.... if u need anymore help post a reply