Paul, there is a product made here in Canada by DW Electro chemicals called Stabilant 22 that works wonders on connectors. It is a liquid and is about 35 dollars for a very small bottle.
You just put a very small amount of it on each mating surface of the connectors and it becomes highly conductive between the two metal surfaces. I used it on all of my repeater antenna connections and had excellent results in lowering noise problems. John VE3AMZ ----- Original Message ----- From: "Paul Kelley N1BUG" <[email protected]> To: <[email protected]> Sent: Friday, May 22, 2009 7:16 AM Subject: [Repeater-Builder] Connector plating vs PIM etc. > OK, I guess it's about time I asked this. Is there someplace I can > find a reference on various connector types (plated or not, type of > plating) vs PIM/IMD/noise in duplex systems and/or in high RF > environments? I am looking at replacing my run of LDF5-50A and > wonder what type of connectors I *should* use. > > I always *thought* silver plated connectors were the way to go. But > it is obvious none of the connectors on my DB4062B duplexer are > silver plated. They are silver in color but they do not tarnish at > all after many years... clearly not silver. > > I've also noticed on this Sinclair dipole array that I had problems > with, the 3 x N(f) tees are silver plated but the mating N(m) > connectors on the harness are not. > > Brass, silver, gold, tri-metal (?)... help! What are the accepted > "rules" for connector choice for duplex systems and/or in high RF > environments, and why? What about mating connectors with different > plating? If a repeater is in a very low RF environment, does it even > matter? > > Thanks! > > Paul N1BUG > > > ------------------------------------ > > > > Yahoo! Groups Links > > > >
