Do satellite TV receivers have a complement of amplifiers?
3, the line should be placed in or near the side near the tuner receiver side?Answer: of course is the signal source, which is near the end of the tuner side, is the source of the best signal quality, from here can get the best effect of amplification.4, if I have a tuner and four cut one or eight cutting device, line should be how to install?Answer: more economic way is tuner out of the line as short as possible, into the switch, connecting line on the switcher outlet, of course you give each tuner with a line can be, but also consider the receiver power supply capacity, because the line is the power consumption
Here are a few common questions:1, the problem of the low line than small and noise compensation of antenna tuner? Or by line can use a smaller pot or worse tuner?Answer: No, the line can amplify the signal, but the signal noise signal and the satellite together is enlarged, so don't expect the line to improve gain and signal quality of the tuner, the signal-to-noise ratio is constant.2, since we can not improve the signal to noise ratio, why use the line?Answer: when the line is too long, or the middle of the line when joint or line of poor quality line can reduce the signal loss, reduce the interference at the receiver side line is introduced, the actual can improve the signal-to-noise ratio, because the noise signal line in series with the signal amplification source is certain, can make the circuit noise signal is relatively lower.
As the upstairs said, this is some, I also have this picture, there are some on the amplifier often encountered questions, I believe you have to help:In line (line amplifier), as the name suggests, is the device of signal amplification in the middle of the line, line feeder connected by the receiver, like other equipment, such as four, a tuner (LNB), it is the active equipment so the general line mark provides signal gain 20dB here, I have good news and common seekbest brand. The line between four cuts and one below is the line.
5, line in the end can play a big role?Answer: in my personal use, DM500S is increase about 2% signal quality line after (in 138 on the CNN test)I use the 2 pot, Shenyang 4 Ku, a pan 75cm 76.5 Ku pot, a 90cm 138+134+122, a four cut, wiring, and then into the DM500S, but after entering the line is the original cable feeder, not designed for satellite design so modified with two at the joint, and the quality of the line is not too good, do not want to go to the open wire in the wall hole, the signal attenuation is relatively large. The line is placed on the receiver side without any effect, or even feel the quality of the signal is reduced, put in four cut back to show its due role, some of the original in the threshold edge of Taiwan can be normal viewing.
