[amsat-bb] Re: RF Adaptors

[Luc Leblanc]

On 24 Jan 2010 at 13:53, Nigel Gunn G8IFF/W8IFF wrote:

Date sent:      	Sun, 24 Jan 2010 13:53:03 +0000
From:           	Nigel Gunn G8IFF/W8IFF <nigel at ngunn.net>
Subject:        	Re: [amsat-bb] Re: RF Adaptors
To:             	Luc Leblanc <lucleblanc6 at videotron.ca>
Copies to:      	amsat-bb at amsat.org

> Pliers? They're only designad to be finger tight.
> 
> On 24-Jan-10 09:10, Luc Leblanc wrote:
>   They also break if you put too much pressure with pliers when you
> > tighten them.
> >


I know but with our weather temperature variation here minus 25C up to +34C hand tightening is not enough it came loose and moisture 
penetrate if connection are not tighten enough. When i wrote " too much pressure" that's what i have in mind but the higher quality adaptor 
resist much more than the cheap aluminium available on the wall. If i one day i can get a torque meter i will be able to confirm how much 
difference they can tolerate before dismantling.

BTW i'm only giving about 1/4 turn pass the hand tightening point. I measure with a caliper the barrel thickness of the cheap metal adaptor 
at .5mm and the higher quality barrel are at 1.5mm. I suspect instead of using an O ring barrel blocking the high quality seems to have 
thicker blocking ring.




"-"


Luc Leblanc VE2DWE
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