Topband: Verifying integrity of 75 ohm coax.

[Nick Hall-Patch]

What brand of grease is generally used for this purpose?   Dow 
Corning #4 is the available "professional" grease in these parts, but 
is that too thick?

Thanks.

best wishes,

Nick
VE7DXR

At 16:06 20-11-13, Bill Wichers wrote:
>As long as the grease isn't too thick it is fine even on 
>low-pressure contacts. I've seen it used in RJ45 connectors for 
>wireless LAN devices that are used outdoors to help prevent 
>corrosion of the data contacts. On a relatively beefy connector like 
>F, PL259, N, etc., the normal wiping action of the contacts during 
>mating will ensure good electrical contact regardless of the 
>presence of the grease.
>
>   -Bill
>
> > High pressure contacts, I feel fine getting slathering dielectric 
> grease all over
> > them before making the connection. Examples are like a Battery 
> terminal in a
> > car, or a spade lug under a screw, or the barrel on an F 
> connector. Something
> > you actually apply some amount of force to tighten (even just "tight finger
> > force"). This forces the grease out of the actual metal to metal 
> contact, and
> > at the same time ensures the metal contacts are enclosed in the grease.
> >
> > But for low pressure contacts, e.g. molex pins, or the center pin on an F
> > connector jack, I think it's best to keep the dielectric grease off the low
> > pressure contacts. Having it in and around a connector boot or shroud that
> > goes around a low pressure contact is fine. A good thing in harsh 
> weather or
> > chemical environment to help keep weather and fumes out. Rubber
> > connector boots last a lot longer with silicone grease on them.
>_________________
>Topband Reflector