Originally Posted by spikor
IF Channel 8 and Channel 11 is on the Same Tower why can't I get Channel 8 ?
I can pull in Ch 3 almost Full Signal. Ch 13 the Same. Ch 11 smidgen less. BUT Ch. 8 NOTHING is the Signal of 8 not as strong and cover out as far as Ch. 3, 11 and 13 I am on the Edge of the Viewing area. Close to the Mason County Line in Ky. ( Not WVa. ) in Tollesboro in other words. Seems kind of odd same Tower get one but not the other. One almost perfect and the other nothing...Nada...Zilch...not a Bleep? I figure it has to be the Signal pattern not reaching out this far. Also I know Ch. 3 and 13 are Closer to me and Ch. 8 and 11 are further away. Why one but not the other?
I think herdfan is on the right track. Channel 13 (RF 13), channel 11 (RF 19), and channel 3 (RF 23) are all lower channels. Channel 8 (RF 41) is at a considerably higher frequency. I don't know what any of their radiation patterns are, but maybe your antenna doesn't do as well with upper UHF.
OTOH, I receive WCHS channel 8 fine from more than 60 miles away, so I think they're using plenty of power. FWIW, I'm using a Channel Master 4228 antenna and a C.M. 7777 preamp. I do have trouble receiving channel 13.
 Oops! I just checked tvfool.com, and you're about 1.5 times as far from WCHS as I am. You probably will need a good UHF antenna and a good preamp, and you may have to get them well up into the air, especially if you don't have good line-of-sight. My antenna is currently sitting on a chair aimed out an upstairs bedroom window, and I'm hoping to get channel 13 well if I ever get it up on the tower. Good luck.