Frank,
I use an Anritsu SiteMaster at work to detect such things with hardline
and coax. It comes with a 50 ohm load for testing feedline. I don't know
how you'd set up an amateur-style antenna analyzer to do such. When I'm
looking for faults, I specifically set it to " Return Loss - DTF
(Distance To Fault)."
If you have a station dummy load, you could use that. The one I built
from Oak Hills Research is a little bulky, but would do the trick I think.
73,
Joel - W4JBB
On 11/12/13, 12:41 AM, Frank Precissi wrote:
This is along the same lines of the PL-259 connector soldering. Although
off topic for this group some collective wisdom might help someone other
than myself in the future.
How can you check to see if coax is still "good"? Sure we can test for
shorts with a multimeter, but if the coax has been crushed and the
dielectric has been deformed, obviously things will be wonky when we put RF
through it.
Is it possible to short one connector with a 50ohm resistor, then on the
other end attaching an antenna analyzer and sweep the ham bands looking for
obvious SWR changes? I mean to me (read: newbie when it comes to this) it
should show a flat 50ohms across the bands, correct?
I have a few spools of 100' RG8X that I'm sure have been slammed in a
sliding glass door more than once. No sign of any trauma on the jacket or
shorts, but I cant tell if the dielectric has been mangled inside. I
really don't want to blindly ditch perfectly good coax.
Any tricks of the trade when it comes to this?
73
Frank
KG6EYC
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