said by cdru:
An antenna 30' off the ground has LOS to an antenna 85 miles away if the far antenna is approximately 3000' tall.
Considering the direction of the stations, as per tvfool.com, it seems to point at the adirondaks. I'm betting the transmitters are on top of the mountains. The website does say I have LOS and it does mention that other closer stations aren't in LOS, so I think they are correct.
edit: Yup, mountain top (all of them). Check these coordinates on google maps 44.525607 -72.815679 (according to some google API, that mountain top is 3000 feet up
said by leibold:
That is the wrong antenna for long distance UHF only stations. Most of the receiving elements on that antenna are for VHF which won't do you any good at all. The fact that is also doubles as an FM radio antenna might even be harmful for your purpose.
What you need is a multi-element directional UHF antenna such as the 8 element Channel Master CM-4228HD or Winegard HD-8800.
Those multi-element antennas (if properly aligned) combine the weak signal from distant transmitters.
1 - There are a couple of local stations that are VHF-Hi that i'd like to get (I'd get a motor to orient it if I watch those channels). Though I guess i could get a second smaller cheaper antenna for the local stations.
2 - The far away stations are all in the exact same azimuth, wouldn't a yagi get more distance if perfectly aligned?