[time-nuts] Connectors

paul swed paulswedb at gmail.com
Fri Apr 12 15:36:14 EDT 2013


Brent
You must be ex-Navy. We did the same thing with a final coat
of liquid rubber. 3M scotch coat. On the ships I could open a connector
that had been to sea for years and the connectors were clean as they were
when installed. I still use this approach. Very solid and as I mentioned
earlier in the thread I use the F connectors for lots of things.


On Fri, Apr 12, 2013 at 12:01 PM, brent evers <brent.evers at gmail.com> wrote:

> BTW - 3M Scotch rubber tape is regularly used in the offshore industry to
> make waterproof connections to 6000m/10,000psi.  I use it on any/all
> outdoor signal (RF/Microwve antenna connectors, amphenol, etc) connectors
> as well.  I cover the rubber tape with a layer of electrical tape (Super
> 88), and then a layer of scotchguard over that.
>
> Scotch rubber tape comes in both a linered (23), and liner-less (130C)
> version.  I far prefer the liner-less 130c.
>
> To make sure this is time related, my two Thunderbolt antenna connectors
> are also sealed this way.
>
> Brent
>
>
>
> On Fri, Apr 12, 2013 at 11:16 AM, Rob Kimberley <
> robkimberley at btinternet.com
> > wrote:
>
> > It's a very useful material, also called "Self Amalgamating Tape".
> >
> > Been using it for years for all sorts of outside cable work.
> >
> > Rob
> >
> > -----Original Message-----
> > From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> > Behalf Of Azelio Boriani
> > Sent: 12 April 2013 14:00
> > To: Discussion of precise time and frequency measurement
> > Subject: Re: [time-nuts] Connectors
> >
> > Sorry, not neoprene but self-sealing polyisobutyl tape, very effective
> for
> > the outdoor antenna work**. I have recently opened a sealed connection,
> > after 10 years, and the protected connector appears as new.
> >
> > On Fri, Apr 12, 2013 at 2:38 PM, Azelio Boriani
> > <azelio.boriani at screen.it>wrote:
> >
> > > I use neoprene tape to make really water tight connections for all
> > > type of connectors.
> > >
> > >
> > > On Fri, Apr 12, 2013 at 1:27 PM, Bob Camp <lists at rtty.us> wrote:
> > >
> > >> Hi
> > >>
> > >> The fancy F connectors are indeed waterproof if:
> > >>
> > >> 1) You have the right cable
> > >> 2) The cable and connector match up
> > >> 3) The tool and the connector match up
> > >>
> > >> The auction sites are a great place to get samples of connectors and
> > >> tools that apparently work with no known cable .
> > >>
> > >> If you are not careful about the trim on the dielectric / positioning
> > >> , they can have issues above 1 or 2 GHz. Even a lot of care they
> > >> don't really do the job above 5 GHz. Exactly where they drop out
> > >> depends (of course) on your return loss expectations.
> > >>
> > >> Bob
> > >>
> > >> On Apr 11, 2013, at 4:21 PM, Gordon Batey <gpbatey at wildblue.net>
> wrote:
> > >>
> > >> > Greetings,
> > >> >
> > >> > I have used the longitudinal compression F connectors for some time
> > >> > now
> > >> with
> > >> > several GPS units and RG-6 cable.  They certainly appear to be
> > >> waterproof
> > >> > and quite sturdy.  Not inexpensive but very serviceable.  I found a
> > >> > kit
> > >> with
> > >> > the installation tool and connectors and separate connectors at
> > >> > LOWES
> > >> that
> > >> > does a nice job.  I also found one for BNC that use the same
> > >> > principle
> > >> but
> > >> > have not used it yet.  Gordon WA4FJC
> > >> >
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