On 9/25/2012 1:47 AM, David Gilbert wrote:
I don't know about what fits or doesn't fit CATV hardline, but I do know
that there is a common brass fitting that fits an SO-239 barrel
exactly. Check out an "A-200" fitting in the plumbing section of Home
Depot.
The half inch compression fitting is fairly close fit to the PL259
barrel. Not exact but close. Just take your coax connector into
Lowe's or Home Depot...or your local hardware store and you'll find
some that fit.
73,
Dave AB7E
On 9/24/2012 9:00 PM, Hans Hammarquist wrote:
I have s.k. TV-hard-line (70 ohms) coax that I am planning to use for
my set-up. My idea was to attach some bulk-head SO-239
The bulkhead connectors are threaded full length and make poor
adapters. There are versions just like PL259s, but female that make
very good adapters to compression fittings.
to the cable
with the help of brass oil compression coupling (I'm told that's the
way to go.) I measured the cable and the outside of the aluminium
shield is 1/2 inch (give or take a few .001". The bulk-head connector
seems more like 9/16" and I don't know if there is such an animal as
1/2 - 9/16" adapter around the oil couplings. (The inner conductor
seems to be wide enough to fit, if I do "some magic with the inner
connector.)
Can I turn down the thread on a bulkhead from 9/16" to 1/2" or will
that give too little material left for strength?
Normally you should be able to turn the threads down as you only have
to take off 1/32nd of an inch and that should still leave enough
material be far stronger than the half inch TV coax which is itself
quite fragile. Bends need to be on the order of about an 18" radius
for safety. The 1/2" stuff is very easy to kink.
It's easier though just to find a female UHF coax connector and
connect it to the coax using a compression coupling.
Is there some
plumbing thread that (almost) fit the SO-239 thread? Any suggestions?
No. Pipe thread is tapered and much more coarse than the threads on
UHF connectors.
Look at the 4th and 5th photos down on
http://www.rogerhalstead.com/ham_files/conn.htm
There is a female connector made exactly like the PL-259, except it's a
female connector and it fits the compression coupling the same way.
It's a very easy to make adapter.
Check the coax dealers and you should find the female version.
73
Roger (K8RI)
As usual, I am open for ideas. (E.g. I will move my shack to the tower
so I don't need any catenary between my tower and my shack.)
Hans -N2JFS
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