"HRBE" wrote in message
...
Hello to all,
I have just bought a Ground plane adaptor off Ebay (yeah I know!) (China!
Yeah I know!) it was advertised as a PL259/SO239 male/female thread to
enable a groundplane to be fitted to a mobile antenna.

I assumed wrongly that there was an International standard with regard to
the PL259/SO239.

Naturally when a known part number is advertised, one would expect that
the normal 5/8" x 24 threads per inch standard (UNEF) would be followed.

Not so! What was sent was a 16 x 1mm adaptor.

Naturally the language difference is making it hard for me to convince the
seller that he MUST advertise the adaptor on Ebay having a metric thread.

Can anyone tell me if there is a move towards the metrification of the
PL259/SO239 connectors?

If this happens all hell will break loose, imagine trying to connect
antenna to coax at say a field day or even worse in an emergency
situation?

John
VK2KCE

I am thinking MFJ put out some antenna tuners a few years back that had some
oddball so239 connectors. The threads almost matched up and youcould force
them to mate, but it was not smooth. Also think they would send you some
replacements for the so239s.