Topband: Verifying integrity of 75 ohm coax.

[Tom W8JI]

>
> Silicone is totally different from silica. Silica in its most common form 
> is "sand". Silicone is a name for a class of compounds based on the 
> element silicon. The properties can vary significantly. Silicones are 
> commonly used for lubrication and defoaming applications. 73, Greg-N4CC
>

Just to be clear, I never said there was silica in silicone grease and I 
never have heard of any silicone grease being abrasive or having silica.

The only case I know of, unless it is a dirty environment, where silicone 
grease becomes abrasive is when something actually arcs through the grease 
and converts some of the grease to silicone-carbide, which is an abrasive.