nuckolls.bob(at)aeroelect
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 Posted: Sat Apr 26, 2014 8:16 am Post subject: Speaking of coax |
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While we're on the subject, know that there's a new
line of coax cables being offered as lower loss and
better shielded than the legacy RG products of PVC/PE . . .
They are part of the LMR series products like this
http://tinyurl.com/l2xbbqr
The value of the part numbers is the outside
diameter in thousandths. Hence, LMR195 is the
same physical size as RG58 and RG400.
The insulation is not high temperature rated,
it's more on the order of that stated for RG58
so soldering connectors to this stuff takes some
practice.
However, for all crimped joints, there's little
difference between the LMR and any other style.
The LMR195 has a solid center conductor which
harkens back to the days when solid center
conductor RG58 can short to the shield if
installed with a sharp bend radius and then
subjected to many years of temperature cycling.
This is a low-risk failure . . . I've only heard
of it one time and that was while I was still
at Cessna the first time.
The center conductor insulation is foamed
which produces a lower loss than legacy RG-58.
The shield is a combination of braid over
foil which offers near perfect shielding.
. . . and the price is right.
Bob . . .
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