But with an active return it's able to send energy back up the line to the pole "Head End" So if it was only a RF booster only I would notice a difference because it's only boosting signal on my end. FWD=+15 RTN=+10 while most boosters are Bi-Directional RF Amplifier that are garbage and don't work. The signal booster I choose has a active return, so instead of only a Forward boost it also has a return boost. Yes I have a stable signal but is it the best? NO But after plugging in the booster in went to green, so I was told. He was also able to tell me that my signal on there end was yellow. Signal levels are NOT the same at the "Head End" while talking to a rep he was able to see changes in my signal when I had the booster connected and when I did not. 3.5 dB insertion loss is standard as wellīut hey, if you think things (ping times, CM reboots, throughput, or ?) are improved, that's great. Signal levels from your CM to the head end, as seen at the head end, are exactly the same, with or without your booster:īefore: 49.1dB (average) CM + 0 dB amp = 49.1 dB totalĪfter: 40.2 dB (average) CM + 12 db amp gain - 3.5 dB insertion loss = 48.5 dB total … pretty closeġ2 dB gain for your amp is a guess, but pretty typical. More details are here if you're so inclined: These error levels (BER, MER, etc.) are constantly measured at the head end. They want to use the minimum signal level to keep error levels to acceptable levels. Read up on that site and it will explain that a high upstream is not the completely miss my point, which is that the cable head end tells your modem what signal level to use. I was running at 50-52 depending on the time of day. (DOCSIS 1.0, 1.1)ĥ8 dBmV maximum for QPSK. (A-TDMA DOCSIS 2.0)ĥ5 dBmV maximum for 8 QAM and 16 QAM. *Recommended Upstream signal levels are +35 dBmV to +49 dBmV.ĥ2 dBmV maximum for A-TDMA & TDMA (DOCSIS 3.0)ĥ3 dBmV maximum for S-CDMA DOCSIS 2.0 (All Modulations)ĥ4 dBmV maximum for 32 QAM and 64 QAM. This is the amount of signal transmitted by the modem to reach the receiver in the cable company head-end. Now if your crappiness is between your CM and your demarc, ie internal wiring, that's another story…. You still have a crappy line, and if it's too crappy, have the cable company roll a truck and fix it. There should not be any difference whether that amplification all comes from the cable modem, or is split between a booster and the CM. In other words, you need a certain amplification going upstream, and that amount is dictated by line quality. The head end tells the cable modem how much to amplify. Good line = low power needed for acceptable S/N at their end. Bad line = higher upstream power is needed to keep the S/N acceptable at the head end. but AFAIK high upstream power indicates the quality of the line between your cable modem and the cable head end. See which TV antenna amplifiers we found below.I'm missing something…. As always, we sought to only include products that have satisfied customers, so all of our picks have received at least 4 stars or more on Amazon. We also compared our selections with other publications like CNET and BestReviews. Our selections are easily divided up into categories so you can pick the best option for your home. Since there are a wide range of TV antenna amplifiers with a diverse range of capabilities, we made sure to gather up some for the most common needs and use cases. Make sure the antenna amp you buy corresponds with your TV's frequency, which may be any one of the following: VHF, UHF, FM, ATSC, NTSC, FTA, or OTA. Frequency Supportįigure out what frequency your television supports by looking at the product specifications for your model. Figure out the number of inputs you need and make sure your amplifier has the appropriate amount of output ports for the number of TVs you have. This factor only needs to be considered if you’re connecting multiple televisions to your TV antenna amplifier. Higher profit may also translate to less noise, a.k.a. This translates to the strength of the boost, so to speak, so higher decibels roughly translate to better signal. Mast amplifiers provide between 30 and 40 decibels of profit, while indoor amplifiers offer between 16 and 24 decibels of profit. Profit is the measurement used to signify the level of signal gain an amplifier offers. If you're planning on putting your TV antenna amplifier outside, look for weather-resistant options that'll stand up to the elements. Mast amplifiers only work for terrestrial television, while indoor amplifiers can do both terrestrial and satellite TV. Mast amplifiers strengthen the signal from the antenna directly, whereas indoor amplifiers are usually used for a specific device, like a cable box. There are two types of amplifiers: mast amplifiers and indoor amplifiers. Show more What to Consider Type of Amplifier
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