RG-59 is RF cable, it is 75 ohms and it will carry video too.
Most times they are the same but a satellite signal needs to be carried by RG6 cable it is a heavier gauge wire then say RG59. Regular or analog cable signal is sometimes carried by RG59 but digital cable should use RG6. +++ The primary specification is not conductor size but the impedance and capacitance of the cable.
Televisions and cable modems use a coaxial cable. RG59 or RG6.
yes RG6 should be used exclusively for satellite hookups and digital CATV. RG59 is fine for analog CATV signals but will not support the higher bandwidth used for satellite signals.
rg-6 is a video cable that is used in today's new standards used to be rg-59 also called coax cable These cables are made for carrying RF (antenna signals) but can be used for video for short runs.
Your first question, yes. Second question, no.
Cable impedance is one of the characteristics that define how the cable will transmit signals. There are some simple and some far more complex descriptions of transmission lines on the Internet that describe the feature in more detail. For the normal user, it is sufficient to know that video signals over co-ax cable will use 75 ohm cable. Most data signals that use co-ax cable will use 50 ohm cable. Generally, the source of the signal will have an impedance equivalent to the characteristic impedance of the cable. Similarly, at the end of the cable, the same value of impedance is needed. When the cable is terminated properly, the signal will be transferred to the end of the cable without it reflecting back down the cable. It is the reflections that cause ghost images or smearing on a television image. As the length of cable increases, it becomes more important to make sure the correct impedance of cable is used with the correct termination.
The type coax you need depends on the type service you have. For satellite service, we use a higher rated coax cable (RG6) to allow for a higher frequency for channels and back feeding capability. RG59 is a lower rated cable.
A: As cable lenght increases the impedance changes with frequency especially at half wave lenght where at some frequency the impedance can be zero. The impedance is a function of capacitance inductance and resistance in the cable
If the interface requires a co-ax cable, then RG59 is perfectly acceptable for video signals. It is not the best choice for arial or satellite feeds. RG59 suffers from high losses and therefore, will not be the right choice for a long run carrying HD signals. If the cable length is more than a few feet, it is probably wise to invest in something with a lower loss if HD is used now or will be in the future.
STP has an impedance of 150 Ohms.
For short signal runs, audio cable can be used for video without any issues. As the length of cable increases, it become more important to use cable that is designed for video signals. For most video signals, this will be a 75 ohm co-ax cable such as RG59. There will only be a noticeable difference in quality once the cable length exceeds 10 to 20 feet.
Connector and impedance