![]() ![]() This will give me three pieces of hardware that could reduce the signal:Ģ) Existing Satellite Mixer combines Dish Network and Antennaģ) Existing Splitter for Satellite to Dish and Antenna to TV ![]() Since the stations I am currently pulling in strong are real channels 7,9,11,13 I propose to leave the Radio Shack Antenna in place and add a Channel Master 4228 mounted as high as possible in the attic with a UHF/VHF Combiner. ![]() What do you think of the 8-bay antennas like Channel Master 4228HD? I found this site that compares antennas. If we were neighbors, You'd see an antenna or two on my roof. The 'cost' of digital TV's 'perfect' picture is that once the signal is too weak or there's too much interference, the picture on the screen goes from 'perfect' to gone as if a switch had been flipped. In the analog days, a signal from an attic mounted antenna would be a bit 'snowier' and have a bit more 'ghosting' but you'd be able to watch it without pixelation or complete loss of signal. A Channel Master CM-3414 or CM-3418 depending on the number output ports needed would be my suggestion. If you use any amplifier, I think it best to protect it from extreme heat. Most SoCal attics get way too hot for any active electronics. Currently, the HD7698P offers the highest gain performance available in a combination h-VHF/UHF antenna. Without knowing the exact performance of the RS antenna I can't tell you what the difference will be either. I would be happy with my existing line-up if I could get CBS on 2.1 which antenna web says I cannot get. My initial plan was to start with new coax where I can replace it and then to add a pream-amp and then finally replacing the antenna with either one or two antennas if necessary. I really need to get either PBS or CBS to get the datastream needed for the Rovi TV guide on my google TV. One question I had was whether or not I could use a two-input amp and two antenna to get the PBS 24.1 which is line of sight in another direction and should be very powerful at my location, but which I don't get at all. From the DB gain and comparing channel 2.1 to the weakest channel that comes in (5.1) it looks to me that I might get channel 2.1 this way. I know the address is not 100% precise, but in taking the height from the existing 18 feet to 23 feet it went from 2Edge to 1Edge. I will be happy to replace the antenna if it seems prudent, along with coax and add a good powered amp as I have power in the attic. Quote: Callsign Real (Virt) Netwk NM (db) Pwr (dBm) Pathĝist miles TRUE (Magn)Ěnt Ht Act TV SignalĚnt Ht Max PWR I am not 100% positive I have enought clearance through the support beams to do this. The last entry in brackets is the new NM(db) and Pwr(dBm) from raising the antenna from 18 to 23 feet. I tried an old Radio Shack amp a few years ago and took it back because I did not see any difference, but I did not have a TV with diagnostics then either. It is currently supported by cross beams in the attic and duct tape around a vertical beam. I think I can raise the antenna about 3-5 feet. Please forgive the formatting, below are my results. I have the following equipment between the antenna and the TV receiver.ģ) A joiner to join my Dish Network Receiver to the antennaĤ) About 10 feet coax down the wall to the TV which would be hard to replace.ĥ) A splitter which takes the signal to the Dish Network Receiver and another to my Slingbox.Ħ) A short coax from my Slingbox to my TV It was pointed pretty good, but after tweaking it with my TV diagnostics I was able to get channel 7.1 from 85% to 95% and channel 5.1 came in at about 10% which I did not get before. After a few earthquakes, etc it may have shifted. I went up into the attic and "remembered" that I had put the mast up with duct tape years ago. Is it possible that the specs are not realistic? I cannot find an antenna with as high of gain as the Radio Shack Specs. I found the specs here which is for a 21.5db gain. I have a 20+ year old Radio Shack Antenna, UHF, VHF, FM in my attic that is 12'6" long. Here are my TV Fool results for my location.
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