each unit such as DV/HD recorder or Humax box needs off air RF in for its own tuners to work on,the outputs of these units are fed via scart or HDMI to the TV set which has its own tuners,what I meant was the kit no longer sends its output on a rf channel to the tv set,the ae in outs are purely loop though,this was not the case a few years ago when VCRs also presented the output as a uhf channel as well as video,as you say the TV must be last in line as it generally only has one RF in socket,which way round you connect the other units via in and out RF socket as long as RF out goes to RF in on the next it does not matter.
