[TowerTalk] Hardline - PL-259

[K8RI]

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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