I really have no idea what any of this means so hopefully you do!?

Question

Can anyone tell me how to figure or what is the RF decibel level for a 20 gauge single core wire?

Answer 1

Nothing....

A wire is a wire and can only transport DC with reasonable success. Are you talking about a coaxial cable? That would not be measured in AWG (American Wire Gauge) units. A coaxial cable would have a max. RF level depending on how much voltage it can carry and what the losses are, though.

Do you have a description of the cable type? Most coax you see in the lab is RG-58, but there are many other types.

If you have a piece of the coax in question, you can measure its geometry and look up the likely type here:

http://en.wikipedia.org/wiki/Coaxial_Cable

Good luck!

Answer 2

Decibels, or "db" refer to a power level, but are not specific to a certain power level as you are asking. "db" is going to be used a response figure for the cable at certain frequencies. From a standard reference point of, say 1 Mhz, the cable will be listed as having a loss of "x" db per foot, at a certain frequency. A separate listing is given for the power rating in watts that the cable can with stand, again for various frequencies, as well as a certain DC based voltage level. Generally, coaxial cable should be able to with stand 250 to 500 volts without break down. You do not want this kind of voltage on it, however, if it is being used as an RF feed line since that would jeopardize the equipment user, as well as the equipment it is connecting. For even more information, get a copy of the ARRL Radio Amateurs Handbook since this kind of information is discussed in that manual.

Answer 3

if for speakers my bf said to use a higher gauge like 18 or 16 gauge depending on the size of ur amp. cause if ur using a 20 gauge for speaker it will do nothing.

Answer 4

I've been in electronics for 50+ years and I have no idea at all what you're talking about.

Doug