Introduction in Baidu Encyclopedia:
The main functions of high-definition cable TV RF cable: TV program clarity can be improved by 30%; 24K gold-plated terminals; high-purity OFC (oxygen-free copper) Conductor; SYWV-75 ohm coaxial cable structure design; double-layer shielding, strong anti-interference ability; unique patented technology magnetic ring design at both ends, which can effectively filter interference signals.
In fact, the so-called high-definition radio frequency cable is just a gimmick for merchants.
Generally speaking, the current high-definition RF cables only have higher quality PVC than ordinary RF cables. Some products may have some good gold-plated heads, which have better shielding capabilities than conventional RF cables. , which can avoid the interference of electromagnetic signals to a certain extent. Compared with ordinary radio frequency lines, there is nothing special about the signal, except that it receives less interference, thus improving the image quality to a certain extent. In addition, the current civilian radio frequency signals do not have high-definition capabilities, including the radio frequency decoders.
The best way to connect a set-top box to an ordinary CRT TV is to use the AV output terminal of the set-top box to directly connect to the AV input terminal of the TV with an audio and video cable. If the TV does not have an AV input terminal and the set-top box does RF output end, you can use an RF cable from the RF output end of the set-top box to the antenna socket of the TV.