I have a basic Cable from Comcast that also carries FM signals. I inserted a splitter to branch the signal to TV (well via VHS Video unit) and the FM tuner of a combo stereo. Outlet |-coax--> Splitter |-coax-->VHS-->TV |-coax-->FM tuner But this caused the ghost image on some channels. If I disconnect the cable to the FM tuner from the splitter, the ghost goes away. What would be the cause of this? An impedance mismatch at the tuner? A weak signal? Would signal booster help?