> RG-8X was developed with a larger center conductor and
> the dilectric was made out of a material to allow the
> larger conductor while keeping the outer size about
> the same as rg-59.
I mite add some to this: The RG8X cable is a true 50 ohm cable
rather than the RG58x variants, most of which are realy 52 ohm cables.
(51.5 0hm was (one of)the Mill specs back in the '40's and '50's)
Now that does not seem to be "too far off" the 50 ohm design, but at
higher frequencies it makes a lot of difference in the loss and
propagation in the cable. This is why a good quality RG8X is better in
some applications.
In duplex applications, the shielding is very important. This is why
the poorly shielded cables, such as RG8X, do not allways work well.
Using a double silver plated shielded cable like RG214 is perfered.
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