Originally Posted by wondergt
I am also near S Pointe Mountain but I think I'm on the other side. I'm at 48th street and Guadalupe. (5 miles SW of towers) I was wondering if its possible to mount an antenna next a dish satellite...antenna web says I need a Medium Directional Antenna. I can't have to big of an antenna because of my location and I like the DB2 because its small. I tried all the indoor antennas (radio shack, silver sensor) none of them worked correctly. So I have to go outdoor... Your help is appreciated.
One problem with your location is that most stations notch that direction out. That is not to say that folks in your area won't get DT, because you are still close enough to get it, but since along that axis there is no appreciable population from, what, 10-15 miles away all the way to the Tuscon coverage area, it makes sense for the PHX stations to engineer their antennas to be more directional toward the rest of the valley, which is exactly what they do.
That means a couple things. At 5 miles you will see less direct signal than most others at 5 miles, but probably not less than normally seen from other directions at 10-15 miles (IOW, still plenty of signal). You might also see more reflected signal than would be normal, which can be an issue. Or not.
Bigger is usually more directional (which you need), and higher directionality usually means more gain (which you don't need, and can be a problem, though easily remedied). Remember that most of the antennaweb info, good as it is, is based on analog reception techniques, which are significantly different from DT reception techniques. IOW, they do not really concern themselves with multipath as DT viewers typically must, and they assume you want to receive all SD stations, which you probably don't. Since all HD stations of merit come from exactly the same place (give or take) using the highest directionality you can find can only help you, regardless of what AW says.
Also, the farther you can mount your antenna away from other structure, including a DBS dish, the better, because having structure within the proximity of a wavelength or so actually can detune the directionality. It may need its own mast, and it will probably do better outside, and high.
Yagis, by the time they get super-directional, get to be 15 feet long or so. I recommend a reflector such as a mesh dish or the Channel Master 4228 for your location, as they are very directional, get UHF, and are not all that large.
With that much gain, you might also need an attenuator. The RatShack 15 dB variable is ideal for this job.