Quote:
Originally Posted by mrmazda 
How high is the roof, and nearby roofs and trees? At less than 50' off the ground I wouldn't expect a 60 mile antenna to do very well for 70 mile stations even with the 7777, unless maybe there's simply nothing else anywhere within a few hundred yards at whatever height 20' above roof means. Are any of those 70 mile stations VHF? If so, you're in trouble with that antenna model. Most fringe antennas have better gain on VHF than UHF, 60 or more miles, at least 10 more miles VHF than UHF, like the HD7698P I use with a 7777 at only 53 miles away but 50' above ground, and not infrequently looses CH 7 completely.

How high is the roof, and nearby roofs and trees? At less than 50' off the ground I wouldn't expect a 60 mile antenna to do very well for 70 mile stations even with the 7777, unless maybe there's simply nothing else anywhere within a few hundred yards at whatever height 20' above roof means. Are any of those 70 mile stations VHF? If so, you're in trouble with that antenna model. Most fringe antennas have better gain on VHF than UHF, 60 or more miles, at least 10 more miles VHF than UHF, like the HD7698P I use with a 7777 at only 53 miles away but 50' above ground, and not infrequently looses CH 7 completely.
I was getting all the stations I need with a 7778 pre-amp. I had to return it because they sold it to me in "used" condition and with missing parts (when it was advetized as new) but I still had a chance to try it before returning it.
If the 7777 causes overload on local stations, I'll go back to a 7778.
I've actually had great success with the CM4228HD, even though I took it right out of the box (no modifications). Most local OTA viewers use this antenna as well.




























, please check this thread:

true. Same thing here.