I wouldnt be putting anything conductive into a RF connector, we use the 650 heliax (I believe) at work and similar connectors for it. Murphy says putting conductive grease into a connector is a bad thing thats going to happen, not just waiting. Though I dont know how sensitive your application is, dielectric grease may be a better choice, or that could cause problems too. Our application isnt that sensitive though, we roll the cable out outside, use a can of air duster to blow out any water/mud that may have gotten in while we unroll the 6' diameter roll of cable. No degreaser/cleaner or anything fancy like that. -Jon On Sat, Feb 20, 2010 at 10:54 PM, Justin Richards wrote: > We have an application that involves over 1000 N type connectors > exposed to the elements and from time to time tests indicate that the > phase or attenuation values are outside limits. > > Often an investigation reveals that the inner copper conductor has > tarnished/turned black/blue and a clean with some fine sandpaper and a > re tighten returns the connector to a serviceable state. > > However, for some of these connectors we find a short time later that > they have once again tarnished and thus we suspect that there must be > moisture in the cable and it is a constant battle repairing these. > > Recently someone suggested we use Conductive Silver Grease on the > conductor inner. > > I have concerns that perhaps silver may react with the copper, or that > as these connectors withstand extremes in temperature and this may > cause the silver grease to slowly weep and find a way that results in > the dielectric becoming contaminated over time. > > The length of these cables are important so if the end was to be > contaminated cutting the cable would present a serious issue. > > Anyone had experience using conductive silver grease for this type of > application. > > The cable is LDF450 and the connectors are RFS-H15566001 and > temperature ranges from 0 - 50 deg. > > The technical data indicates that it is good for this range but mainly > concerned that over time the grease will move especially as the > connectors are unfavorably oriented and exposed to the elements. > > Cheers Justin > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist