On Sat, 5 Mar 2016 15:52:22 -0800 (PST), wrote:

On Saturday, March 5, 2016 at 9:14:19 AM UTC-8, DaveC wrote:
Cleaning up an old rotary mode switch used for 5v logic levels. It has some
kind of grease in it.


...which has always confused me: grease is an insulator (well, the grease in
this switch is--just tested and it's infinite ohms).

I read that dielectric grease is good to keep contacts sealed against the
elements that have high physical pressure (which overcomes any separation
provided by the grease) but that signal and other low voltages grease is
contra-indicated.

What say y'all?

Thanks.

I use GC 10-8101 grease on outdoor F connectors under the weather boot to keep the oxidation down. I opened a 15 year old connection and it looked like new inside. The antenna was trash but the cable was excellent.
http://www.gcelectronics.com/order/D...20Compound.pdf
G²

GC 10-8101 is a "dielectric grease". From the above URL:
"... to prevent electrical power from migrating between circuitry".
Dielectric means "insulator" in this case, which is not exactly what I
would want in an RF connector.
https://en.wikipedia.org/wiki/Silicone_grease#Dielectric_grease

Perhaps some conductive grease would make a better connection?
http://www.sanchem.com/electrical-contact-lubricant.html

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558