[amsat-bb] Re: RF Adaptors
lucleblanc6 at videotron.ca
Sun Jan 24 09:12:09 PST 2010
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
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
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