I'll preface this by saying I know I have the right to put my antenna on top of my roof and there are probably better antennas, but I want to work with what I have and if I do put the antenna on top of my roof, to make it as unobtrusive as possible.
Right now I'm using the RS double bow-tie antenna with the 300 - 75 ohm modification in my attic to get the few local stations that are broadcasting digitally in Austin. I get occasional dropouts from the NBC station and do not get the FOX station at all (broadcasting at very low power). A few others in my general area have been able to get the FOX station. All the stations are broadcasting from the same tower area, so that makes it easier on pointing the antenna.
I bought a Channel Master 4221 (4 bow-tie UHF antenna) in the hopes that I will be able to improve the signal strength on the CBS station and pull in the FOX station. Before I go up in my attic or possibly up on my roof, I have a few questions.
1. If I do put it on my roof, I'd like to mount it on my chimney but not have it extend above the peak of my roof (it's more hidden this way -- the way that I want to keep it). In order to aim it toward the transmission towers, the line of sight will be blocked by my roof. Does this mean that the signal needs to travel through my attic and then back out the roof to get to my antenna - if so, would I have higher strength putting the antenna inside the attic (it would only have 1 layer of roofing material to penetrate rather than 2).
2. If I diplex the OTA signal from my antenna with the cable from DirecTV dish, and then separate them prior to entering the STB should I expect any significant signal degradation on either the satellite signal or OTA signal?
thanks,
Murray
Right now I'm using the RS double bow-tie antenna with the 300 - 75 ohm modification in my attic to get the few local stations that are broadcasting digitally in Austin. I get occasional dropouts from the NBC station and do not get the FOX station at all (broadcasting at very low power). A few others in my general area have been able to get the FOX station. All the stations are broadcasting from the same tower area, so that makes it easier on pointing the antenna.
I bought a Channel Master 4221 (4 bow-tie UHF antenna) in the hopes that I will be able to improve the signal strength on the CBS station and pull in the FOX station. Before I go up in my attic or possibly up on my roof, I have a few questions.
1. If I do put it on my roof, I'd like to mount it on my chimney but not have it extend above the peak of my roof (it's more hidden this way -- the way that I want to keep it). In order to aim it toward the transmission towers, the line of sight will be blocked by my roof. Does this mean that the signal needs to travel through my attic and then back out the roof to get to my antenna - if so, would I have higher strength putting the antenna inside the attic (it would only have 1 layer of roofing material to penetrate rather than 2).
2. If I diplex the OTA signal from my antenna with the cable from DirecTV dish, and then separate them prior to entering the STB should I expect any significant signal degradation on either the satellite signal or OTA signal?
thanks,
Murray