Thanks for that, Walt - perhaps now is the time to scream
about "grey" imports if these were intended only for the internal
Japanese Market?

Unfortunately the Diamond colinear to replace the 5/8ths suffered
from the same problem, and the cable is jammed solidly onto the
antenna, so we may be stuck with it! I assumed that the lower part of the
SO239's screw thread was dirty and so drove the nut home with a
pair of pliers, assuming that this would clear the screw thread - we live
and learn!

I'm now well on the way to repairing the 5/8ths where I had to
engage in destructive test - I've been given a large sheet of
Paxolin/Tufnol which is 7/8ths of an inch thick, so 3 thicknesses
of that araldited together and turned down should do the
trick.

"Walt Davidson" wrote in message
...
"Some cautions: Japan has a
UHF connector that has a slightly
different thread size than the standard
SO-239 (which has a 0.625-
24NEF-2A thread.) This metric
threaded connector is found on nonexport
Japanese ham equipment.
A PL-259 will fit on this connector,
but will only thread on for a few
turns leaving the shield connection
loose and creating an undesirable
condition. MCM sells a UHF bulkhead
connector (#27-220) with the
proper thread that replaces the
most common of these ******* connectors."

"Airy R. Bean" wrote in message
...
I assumed that the lower part of the
SO239's screw thread was dirty and so drove the nut home with a
pair of pliers, assuming that this would clear the screw thread - we live
and learn!


Ho, Ho, Ho

Yet another fettling experiment that went wrong!
I'm so glad that I'm only a beginer, and not an expert like yourself...

"Airy R. Bean" wrote in message
...
I'm now well on the way to repairing the 5/8ths where I had to
engage in destructive test - I've been given a large sheet of
Paxolin/Tufnol which is 7/8ths of an inch thick, so 3 thicknesses
of that araldited together and turned down should do the
trick.
Tufnell is a very lossy dielectric when used outdoors.

Steve H


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.736 / Virus Database: 490 - Release Date: 09/08/04

"Airy R. Bean" wrote in message
...
Thanks for that, Walt - perhaps now is the time to scream
about "grey" imports if these were intended only for the internal
Japanese Market?


When was the last time you did any real engineering. Metric threads are the
norm these days. Have been for ages.

"Airy R. Bean" wrote in message
...
Thanks for that, Walt - perhaps now is the time to scream
about "grey" imports if these were intended only for the internal
Japanese Market?

Unfortunately the Diamond colinear to replace the 5/8ths suffered
from the same problem, and the cable is jammed solidly onto the
antenna, so we may be stuck with it! I assumed that the lower part of the
SO239's screw thread was dirty and so drove the nut home with a
pair of pliers, assuming that this would clear the screw thread - we live
and learn!

Why would a new connector be so dirty?

"Airy R. Bean" wrote in message
...
Thanks for that, Walt - perhaps now is the time to scream
about "grey" imports if these were intended only for the internal
Japanese Market?

Unfortunately the Diamond colinear to replace the 5/8ths suffered
from the same problem, and the cable is jammed solidly onto the
antenna, so we may be stuck with it! I assumed that the lower part of the
SO239's screw thread was dirty and so drove the nut home with a
pair of pliers, assuming that this would clear the screw thread - we live
and learn!

I'm now well on the way to repairing the 5/8ths where I had to
engage in destructive test - I've been given a large sheet of
Paxolin/Tufnol which is 7/8ths of an inch thick, so 3 thicknesses
of that araldited together and turned down should do the
trick.


I see another Gareth disaster.

Do you know that Paxolin and Tufnol are not the same thing and both likely
to be lossey if used outside?

In article , Airy R. Bean
writes
I assumed that the lower part of the SO239's screw thread was dirty and
so drove the nut home with a pair of pliers, assuming that this would
clear the screw thread - we live and learn!

I warning to those who need it; if an RF connector is "dirty", clean it,
do not leave the dirt to cause trouble.
--
Ian G8ILZ

And more recently have obtained some offcuts
of 40mm nylon round rod from a local engineering
works.

"Airy R. Bean" wrote in message
...
I'm now well on the way to repairing the 5/8ths where I had to
engage in destructive test - I've been given a large sheet of
Paxolin/Tufnol which is 7/8ths of an inch thick, so 3 thicknesses
of that araldited together and turned down should do the
trick.