[time-nuts] Connectors

brent evers brent.evers at gmail.com
Sat Apr 13 09:58:59 EDT 2013


Scotchkote!  Yes - Thank you for the correction!  The other could lead to
disaster!

Nope - not ex-navy.  Its pretty standard practice in the offshore world.
My time was spent on research vessels down in Antarctica.

Apologies for the mix-up.

Brent


On Fri, Apr 12, 2013 at 3:37 PM, paul swed <paulswedb at gmail.com> wrote:

> OK this is crazy I answered out of sequence not realizing my email had
> never been sent.
> Describing Navy and ScotchKote...
> Regards
> Paul
> WB8TSL
>
>
> On Fri, Apr 12, 2013 at 3:36 PM, paul swed <paulswedb at gmail.com> wrote:
>
> > 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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