With reference to your product on RG58 cable, we would like to know what mean for the abbreviation of A/U, B/U & C/U of a RG58 cable.
RG stands for "Radio Guide" and is a military term.
The 58 class has an outer diameter of 0.195 inches, 50 to 53.5 ohms impedance, and can handle up to 500 watts of HF (High Frequency) power.
RG58/U has a solid center conductor of 20 AWG bare copper. Its capacitance is 28.5 pF per foot.
RG58A/U has a center conductor of 20 AWG stranded tinned copper. Its capacitance is 30.8 pF per foot.
RG58C/U has a center conductor of 20 AWG stranded tinned copper. Its capacitance is 30.8 pF per foot. It's outer jacket is a different material than RG58A/U.
We could find no information on an RG58B/U.
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