[TowerTalk] Hardline - PL-259

[David Gilbert]

Sorry for the careless typing ... I meant LDF4-50A 1/2" Heliax.

73,
Dave   AB7E



On 9/25/2012 12:19 AM, David Gilbert wrote:
>
> The Watts (brand name) A-200 fitting is a 7/16" female to 3/8" tube 
> compression adapter, and the 7/16" end fits perfectly on an SO-239 
> barrel.   It literally is an exact match.   Not sure what you mean by 
> a PL-259 barrel.
>
> If you file the threads down just slightly on the 3/8" end (minus the 
> compression nut that comes with it) of the A-200 it makes a snug fit 
> INSIDE 1/2" copper plumbing tube, which in turn makes a nice fit OVER 
> the copper jacket of LDF-50A 1/2" Heliax ... which was my original 
> interest although I suspect something similar might be usable for 1/2" 
> CATV cable.
>
> 73,
> Dave   AB7E
>
>
> On 9/24/2012 11:38 PM, K8RI wrote:
>> 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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>>>
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