I was playing about with my nokia Gondigital box the other day and discovered something interesting. I'm not a mad fan of having RF output stages that you can't switch off if required. In these circumstances I always try and select an output RF frequency that is as far away as possible from any broadcast frequencies. My digibox was tuned to 67 initially as I figured this was miles away from anything. The other night I changed the RF output frequency to a different one ( can't remember exactly what but I decided I could get it further away from any possible frequency conflicts with reference to the crystal palace main frequencies. ( it was changed to somewhere in the 30s but away from the main broadcast frequencies). After doing this I discovered I could no longer recieve ITV and Ch.4 ! Changing the RF frequency back to 67 gave me a worse picture on the rf input on the TV but lo and behold ITV and Ch4 came back no problem. When I initially bought the box I found replacing the uplink coax lead to the TV with a slightly better brown coax job I knocked up myself practically eliminated any glitching or breakup I'd get when two stroke engines or old bangers drove past the house ( handy indication the pizza had arrived though!) So in conjunction with my dabblings the other night I'm now convinced the rf output stages on these things are at least partially responsible for interfering with initial reception in the first place. So if you are getting some nasty reception try shifting the RF output frequency and get a better uplink kead than the one that came with the box.