Coaxial Cable

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Raul600

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Does anyone know where I get information on how to select the right RF coax cable depending on the distance and signal strength?
 
Raul600 said:
Does anyone know where I get information on how to select the right RF coax cable depending on the distance and signal strength?
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Welcome to the zoo! :smile:

This is a question best suited for the Low Voltage thread.

But, since you're here, tell us about your intended usage.
 
I believe that selecting the right cable for the length and for the frequencies you intend to use is called "impedance matching". try doing a search for that, there are books and articles that may help, or you might also find a supplier or even to consultant assist you in matching the cable (and terminations) to the application.
 
I could help, but without knowing the frequency distance and whether its 50 or 75 ohms is kinda like shooting in the dark.
 
LarryFine said:
Well, he said RF, so that suggests RG-6.
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"RF" covers an awful lot of territory. "RG-6" also covers a lot of territory and countless sub-types of "RG-6". Over-the-Air signals have one set of requirements, satellite another and cable yet another. "VHF" and "CB" communications use 50 Ohm co-ax, not 75 Ohm.
 
At minimum you need to know the impedance, frequency or frequency range, power level, accptable loss (varies with frequency), indoor or outdoor, burial or not, and UV exposure or not. All of the coaxial cable manufacturers list these parameters. Google Beldon.
 
crazyboy said:
So you'd use rg6 for the feedline up an antenna tower a few hundred feet for cell antennas ???
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No, but then, I've never run those coaxes. For a long cable-TV run, however, I'd probably opt for RG-11.

When someone askjs such an obscure question, I tend to think they're asking about cable-TV cabling.
 
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