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Old November 5th 06, 12:58 PM posted to rec.radio.amateur.antenna,rec.radio.amateur.policy,rec.radio.shortwave
Dave Dave is offline
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First recorded activity by RadioBanter: Jul 2006
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Default Identifying coax cable.


"Boozo" wrote in message
...

"Slow Code" wrote in message
nk.net...
wrote in :

.... How about Belden 9913? Of course, the construction of that
line is "different" enough that it would be hard to mistake it for
something else, and I assume ....

For those of us who never noticed -- or never recognized -- the
9913 differences in the first place, could you please explain....

The outside diameter of the cable, like .195, .240, .260, .405,... and
the
gage of the center conductor, like #10, 14, 16, 18, stranded or solid.

I don't understand. Are you saying 9913 has been made in ALL
of those different sizes and with ALL of those different center-
conductor gauges?


Just go to Radio Shack. You can exchange blank stares with the clerk.

SC

Looks like I may have to as it doesn't seem to have an easy solution and
my VHF transmitter is broken.
Have a data sheet handy so might take some measurements with the vernier
calipers and see what I come up with.

Thanks for all the suggestions.

Boozo.(nothing to do with alcohol !)


the original 9913 has a 9.5ga solid copper center conductor, the center
conductor has a spiral wrapped standoff insulator, a thin solid dielectric
layer then foil and braid shield. the od is .405" so it can't be easily
distinguished from regular rg8 without looking inside. though if it is the
original good stuff i would expect it to be well marked on the outside since
not just everyone made it. the problem is that there have been many
variations over the years on 9913, including stranded center conductors and
some variations in dielectrics.