On Fri, 26 Dec 2003 13:15:11 -0000, "Nick Smith"
wrote:


Before connecting, spray both connectors with WD40 (has negligible
effect on signals). Connect. Wipe off WD40 (on outside, of course). Wrap
tightly and neatly with self-amalgamating tape. Spray again with WD40.
Will last for ever.
Ian.

Ian,

Surely the WD40 should not be applied to the electrically connecting surfaces ?
Isn't oil an insulator ?

Sure it is, but that has little to do with the application. WD-40
also works well on moving switch contacts. I'd not recommend it in a
band switch though as getting in the pader caps would be a disaster.

Remember in a switch the pressure "wipes" the surface. In the case of
the connector the pressure of a well tightened connector will press
out any oil giving a good contact. Unfortunately it also provides
some lubrication making for the possibility of over tightening the
connector. I've stripped the threads right out of PL259s and N
connectors when I managed to get some silicon grease on the threads.

And I wouldn't be happy leaving self amalgamating exposed to the sun - overwrap
in plastic insulating tape as well with the outermost layer not wrapped under much
tension to stop the tape unwrapping itself when baking in the sun.

Too complicated a way to go. I don't get that elaborate on high power
UHF and VHF connections.

Simple, liquid electrical tape is as good as any as long as the
surface is dry so it can stick. It forms a very tough film that lasts
a long time even in direct sunlight.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair?)
www.rogerhalstead.com

Nick

I have some liquid tape and it is very good for this kind of thing, too.
Also you may want to look for Caltex CopperKote - a copper loaded
grease if you can't stand the thought of putting vaseline or similar
on the plugs first. I also use it on battery posts.

It is used commercially by the power companies when they string up
supply lines. The tiny copper flakes cut thru and make contact.
Cheers.
Murray vk4aok

Roger Halstead wrote:

On Fri, 26 Dec 2003 13:15:11 -0000, "Nick Smith"
wrote:


Before connecting, spray both connectors with WD40 (has negligible
effect on signals). Connect. Wipe off WD40 (on outside, of course). Wrap
tightly and neatly with self-amalgamating tape. Spray again with WD40.
Will last for ever.
Ian.

Ian,

Surely the WD40 should not be applied to the electrically connecting surfaces ?
Isn't oil an insulator ?

Sure it is, but that has little to do with the application. WD-40
also works well on moving switch contacts. I'd not recommend it in a
band switch though as getting in the pader caps would be a disaster.

Remember in a switch the pressure "wipes" the surface. In the case of
the connector the pressure of a well tightened connector will press
out any oil giving a good contact. Unfortunately it also provides
some lubrication making for the possibility of over tightening the
connector. I've stripped the threads right out of PL259s and N
connectors when I managed to get some silicon grease on the threads.

And I wouldn't be happy leaving self amalgamating exposed to the sun - overwrap
in plastic insulating tape as well with the outermost layer not wrapped under much
tension to stop the tape unwrapping itself when baking in the sun.

Too complicated a way to go. I don't get that elaborate on high power
UHF and VHF connections.

Simple, liquid electrical tape is as good as any as long as the
surface is dry so it can stick. It forms a very tough film that lasts
a long time even in direct sunlight.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair?)
www.rogerhalstead.com

Nick


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Murray Kelly vk4aok

6 Spyglass Place,
Oxley, QLD. 4075. Australia
ph/fax Intl+ 61 7 3879 7968
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