Oh, sorry - I didn't want to clutter up my post with even more info. It's hard to tell what's enough and what's too much, especially in a subject that's not in my comfort zone.
It's an Antennacraft FM6, which is working absolutely flawlessly for what I needed it for (low power station at 15 miles and 315 deg. mag., on 90.1 MHz). Actually too well, but that's for another post on the FM forum.
For scale, in the attic picture, the trusses at the far end are 12 ft deep into the picture, then there's a 12 ft section of conventional joist and rafter framing towards the camera, and the diagonal brace where the arrow starts is 4 ft this side of the nearest truss. There's a skylight box at the right, in line with that diagonal kicker (and presumably with metal flashing around the perimeter), but the main cluster of transmitters would be a bit to the left of the skylight looking at the roof.
In the sketch below, you can see a spruce tree that would block the antenna from the 250 deg transmitter if I mounted it on the gable end of the house, which is the only practical outdoor place to mount one. The roof is new, and mounting directly to it is just not an option.
The little box between the two transmitter vectors is just an A/C unit on the ground, far below the antenna. I forgot to scrape it off before capturing the screen shot.
There will be only one TV on this antenna, which is a new 60" (or thereabouts) Panasonic plasma. Does 1080p on a blue ray player, and 1080i on many OTA channels.
I don't want to get into splitters or amplifiers if I don't have to, though if things go according to plan (cutting the cord), I may end up putting more on it eventually, in which case an amp will probably be required. But at least it'll be under a roof.
I was hoping the HBU11 would be a viable antenna, as it's pretty cost effective. I'm guessing a 2-bay or 4-bay like the U-2000/4000 aren't suitable since they're UHF only (even that close?). After studying the space for a while, it appears a larger h-vhf/uhf antenna like the Wineguard HD 7694P would fit fine, aimed at 250 degrees, but I'm concerned about too much signal with transmitters only a few miles away.
I'd just buy and try, but that can get expensive fast if I can't return one that doesn't work the way I hope.
