[GroundUrMast]

I wont speak ill of the HD Stacker, but I can't recommend it either. The only information I have been able to find is testimonials and field a test against several dissimilar antennas. I have not been able to determine if each antenna tested was mounted in the exact same location or if the antennas were mounted at separate locations on the field. Because the report of the field test indicates that an uncalibrated, consumer grade tuner was used as the signal strength/quality measurement devise, I simply don't know what the performance of the HD Stacker is. I can only estimate the performance to be somewhat similar to that of a Winegard HD769X series antenna which it may be derived from.

Regardless of which antenna you choose, attic mounting is going to limit the likelihood of success. If you have large mature trees in the area, you will be facing an even greater challenge.

If your goal is to receive the major networks, ABC , CBS, NBC and PBS, you will need to use a high gain UHF antenna such as the Winegard HD9095P or Antennas Direct XG-91 (Either of those antennas aimed at 19° mag. would provide reliable reception of KSNT-real 27, KTKA-real 49 and KTWU-real 36. You may see WIBW-real 44 but how reliable that is could be determined by nearby obstructions such as trees and buildings.

A reliable signal from WIBW-real 13 would be far easier if you added a Winegard YA-1713 high-VHF aimed at 5° mag.

I expect that you will need to mount these antennas outside in the clear. Of course, you can try in your attic... If we were next door neighbors, you would see antennas on my roof.


If you have a desire to receive KSCW-real 12, you could try aiming the YA-1713 toward 252°. Frankly, I doubt you will get a reliable lock on that signal, but it would be worth looking for if their programing interests you. If you found reception of KSCW reliable, mounting the YA-1713 on a rotator would allow you to select between WIBW and KSCW without turning the UHF antenna.

Combining the signals from the UHF and high-VHF antennas can be done several ways. I would use an Winegard AP2870 or Antennacraft 10G221 preamp which have an input for each antenna and the amplifiers are less prone to overload than many. The strong signal from KTWU-real 36 will be a possible problem for amplifiers designed for low level input.