Hi:
Water has a dielectric constant around 60 compared to plastic that just over 2. So if water gets into the connection
there's going to be problems.
It turns out that Silicon grease has a dielectric constant very close to plastic so filling an open RF connector with
Silicon grease prior to mating them is a great way to water proof the joint. See Weatherproofing at
http://www.prc68.com/I/OE254.shtml
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
brent evers 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 <robkimber...@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-boun...@febo.com [mailto:time-nuts-boun...@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.bori...@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 <li...@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 <gpba...@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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