The signal from my TV aerial is split at the aerial , one cable going to ground floor and 2nd separate cable going direct to 1st floor bedroom . Downstairs reception ( with booster) is fine but bedroom TV , even with separate booster, is poor and entirely dependent on downstairs TV being "on" . If the downstairs is off or in "sleep" mode , upstairs reception is awful even with booster . I cannot see the logic as to why one TV should affect the other when there is no connection between them . The downstairs connection is --booster--SkyHD box- VHS/DVD recorder - TV , upstairs its into the boster then directly to the TV . Has anyone any thoughts ??