[Elecraft] KPA100 SO-239 Help

[Ron D'Eau Claire]

An SO/PL239 is pushed on, not twisted, until the face of the male is against
the ridged edge of the female, then the outer shell is threaded on and
tightened. The center pin never turns nor has any torque applied. 

I cannot picture how you could "spin" the CENTER conductor. That would
require twisting the coax attached to the male half. 

Ron AC7AC

-----Original Message-----
I've found the same problem with two batches of Teflon insulated, single 
hole mount SO-239 connectors manufactured in China and purchased from RF 
Connection. The center pin spins within the Teflon bushing and unless 
the user is extremely careful when connecting a PL-259, the wire 
connected to the center conductor will break off.

I returned one batch and received a second batch that were supposed to 
be correct and found the same problem. I rejected those as well.

I agree that a connector with this problem should not be used - too 
great a risk of damage to the internal wiring.

Jack K8ZOA

On 2/25/2011 12:58 PM, dw wrote:
> Hi John,
> If it were me, and there is a possibility that the inner wire soldered
> to the inner pin could freely spin around during the process of taking
> on/off coax at the back of the unit, I would not take the risk of
> compromising the inner wire such that it could twist, bird-cage or
> possibly short to gnd.
>
> N1BBR