When coaxial cable started being used in many different applications, it was quickly discovered that sometimes you need extra shielding due to environmental issues like electromagnetic interference and radio frequency interference (EMI/RFI).
Get the idea? Dual Shield Coaxial vs Quad Shield Coaxial There are different RG coaxial cables for different applications. Want to run longer with your cable and RG6 just won’t cut it? Well, that is what RG11 is for. We had RG58 a very long time ago, and now you see RG6. Cabling to connect up a two-way antenna (like for radio applications)Īs the needs evolved for faster signals to carry ever more data, the “RG” numbers started incrementing.Cable TV television signals (CATV) programming.
But, I digress….Ĭoaxial cable in general has been used, and is still likely in use for the following: So, what was once the province of the military has now made it into the hands of the general public. When you have to launch a missile or something, you need the right cable to do it! When you need to launch a whole lot of missiles at once in a world-ending scenario, you get the basis for the modern Internet. The military has always been at the forefront of developing communications cable for defense needs. Like much of our technology we take for granted, coaxial cable started out as a US military project. First, let’s talk about history Where Did It All Begin? A Short History Lesson. Interestingly, the amount of shielding has nothing to do with what kind of signal you are passing through the coax cable. This article focuses on the difference between the shielding types. The two most often seen variations are dual shield (DS) and quad shield(QS). Additional variations come in outer jacket types and the amount of shielding the cable has. Usually this is followed by a number like 58, 59, 6, 11 and more.
In all cases, you just worked with coaxial cable. In fact, you have used it at some point or another, even if you did not know what it was called! Have you ever screwed in a cable to a threaded connector sticking out of a wall plate or on the back of a television? Perhaps that threaded connector you screwed the cable onto was at the back of a cable modem. Written by Don Schultz, trueCABLE Network Expert, BICSI INST1, INSTC, Fluke Networks CCTTĬoaxial cable has been with us for a long time. The Difference Between Dual Shield vs Quad Shield Coaxial Cable
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