Let us say , all else being equal, the length, and the cost  . Let's explore the difference between them .

Now, in the real world, it’s a bit more complicated than . We should consider production process , the material cost , the equipment in using and so on .

Longer cables have more resistance (or, rather, impedance), and so the signal gets weaker as the cable length increases. And this problem is more pronounced the higher the frequency of the signals you send down the cable. On a given cable, lower frequencies might travel 500 feet before they get too weak to be usable, while much higher frequencies might only travel 300 feet before they’re unusable.

One solution to this problem is to use thicker cables.

As cable systems got more sophisticated and started adding a lot more channels, RG59 just couldn’t keep up, and the industry moved to the next thickest cable, called RG6. It cost a bit more - but not too much more - and could handle the increased demands in most cases.

But if you were needing to carry that same signal a really long way - more than 100 feet or so - you had to step up again to a much thicker cable, called RG11. This cable is about as thick as a man’s finger, and is considerably more expensive than RG6, but it can go out 500 feet. Normal end-users rarely have to deal with RG6, but it’s fairly common in larger commercial installations.

Let's find specific details in RG59, RG6 and RG11 as follows .

RG6 - THE UNIVERSAL COAXIAL CABLE GOOD FOR MOST APPLICATIONS

RG6 is the market's most widely used coaxial cable that works well with most contemporary applications. RG6 is capable of carrying signals over long distances. It is also capable of operating at higher frequencies than other cables of the range,  commonly used in radio antennas along with RG59.

RG6 is marketed as a baseband transmission line cable. The cable possesses a high attenuation level. The cable is also good value for money and is flexible. Overall, you will not be disappointed with RG6 for any indoor application, whether it is the radio antennas, internet, CCTV, or cable tv. The gauge of the RG6 cable is 18 AWG.

RG11 - A CABLE FOR OUTSIDE USE WHEN SPECIFICATIONS CALL FOR SOMETHING EXTRA

Rg11 is a coaxial cable that is used mainly in harsh conditions outside. It works best in specific cases, such as direct burial or cables running for hundreds of meters. For the most part, Rg11 is suitable for indoor applications because it is heavier, not flexible, and more difficult to install. 

However, it is a perfect cable for long runs outdoors. The cable has a low attenuation level, which means it can last for over a kilometer. Because Rg11 is made extra thick to fit the harsh environmental conditions, it is also a more expensive cable than RG6 and RG 11. The price of installation will also be higher because of the installation difficulty.  The size of RG11 is 14 AWG.

RG59 - AN OLD-FASHIONED CABLE STILL USED FOR RADIO ANTENNAS

Rg59 is a similar cable to RG6, but the latter works better for most applications. The thing is that the signal loss of an RG59 is too high for most contemporary applications, and the cable does not do well at high frequencies. However, this cable still works well with most antennas. It is marketed as a cable for security cameras and CCTV, but RG6 might still be a better option for those applications. As a rule, the gauge of RG59 is 22 AWG.

THE BOTTOM LINE

Use Rg6 for most projects that involve coax cables

Use Rg11 for outdoor projects at long lengths

Use RG59 for antennas or skip it altogether

In a conclusion , to choose thinner cables or thicker cables is depending on the distance you need to transmit , for now we can choose RG59 and RG6 for short distance , if shorter distance , then Mini RG59 would be the best choice . If longer , then , we choose RG11 , thicker cable to make sure analog signal stable transmit .

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