"Airy R. Bean" wrote in message
...
I was recently commissioning a 2M vertical antenna that
had an in-built SO239. However, the thread on the SO239
was shorter than that of a PL259 to the extent that even when
screwed fully home, the cable was not locked (Usually by
those triangular pips on the end of the plug locating into
the v-grooves on the SO239) and could
swivel around with a correspondingly poor contact
for the braid/outer.

Even a Cber would know that your problem is caused by
trying to mate up 2 incompatible threads!!!

It is a common problem on white stick antennas, if you
purchase a compatible plug then everything will screw up
correctly.!!!!!

Jeff