"Floyd Sense" wrote in message
...
I picked up a couple of new Tohtsu CX-600M coaxial relays - they are
similar
to the DowKey relays, with three UHF connectors of the SO-239 design. I
had
a problem screwing on the PL-259s more than 3-4 turns and in checking the
threads I find that the pitch or threads-per-inch of the Tohtsu connectors
does not match that of the PL-259/SO-239 UHF connectors. I wonder if
anyone
else has run into this problem? I was under the impression that the UHF
connector was a universal item, but maybe that is not true?

--
73, Floyd - K8AC


Tohtsu web page (English language version)
http://www.tohtsu.com/index-e.htm

Here are the specifications for this coaxial relay from the Tohtsu web site
(isn't the Internet great, electronic library in you house).
http://www.tohtsu.com/products/cx-600m.htm

Henry Radio sells these (new)
http://www.henryradio.com/Tohtsu/cx600m.htm

Invented in the 1930's by an Amphenol engineer named E. Clark Quackenbush,
UHF coaxial connectors are general purpose units developed for use in low
frequency systems from 0.6 - 300 MHz. Invented for use in the radio
industry, UHF is an acronym for Ultra High Frequency because at the time 300
MHz was considered high frequency.

Mechanical
Mating 5/8-24 threaded coupling
Cable Affixment Braid solder, set screw, clamp and crimp