[time-nuts] RG6 or LMR400 for GPS Antenna (Symmetricom 58532A and T-bolt)

William H. Fite omniryx at gmail.com
Thu Apr 21 20:57:42 EDT 2016


Mark is right on target re the connectors; get the best you can afford.
Amphenol or equivalent.

Self-fusing silicone tape is a lot faster and easier than the 3M black
tape. Just stretch and wrap, it conforms beautifully, is highly resistant
to UV, and won't stiffen and crack in the cold. Best of all, if you need to
remove it, you just split it with a knife and it comes off cleanly.

http://www.uline.com/Product/Detail/S-11849/High-Temperature-Tapes/Silicone-Self-Fusing-Tape-1-x-12-yds-Red?pricode=WY637&gadtype=pla&id=S-11849&gclid=CjwKEAjw9OG4BRDJzY3jrMng4iQSJABddor1kp3L3ESovor8DEeu0fEjhLXVWv0maB4ehIVQ1EEASBoC6kTw_wcB&gclsrc=aw.ds



On Thursday, April 21, 2016, Mark Spencer <mark at alignedsolutions.com> wrote:

> That is more or less the same method I use for my amateur radio
> activities.   Home Depot in Canada sells similar 3M products which is
> helpful during quick weekend projects.
>
> Professionally I've seen other methods used but on my own time I like the
> "splicing tape" covered with super "33 tape" approach.
>
> These days I mostly use "N" connectors which in my experience can be a bit
> more forgiving of less than perfect weather proofing than certain other
> types.   (Not all "N" type connectors are equal in my view.)
>
> Your experience and results may differ from mine.
>
> 73
> Mark S
> VE7AFZ
>
> Sent from my iPhone
>
> > On Apr 21, 2016, at 1:12 PM, DaveH <info at blackmountainforge.com
> <javascript:;>> wrote:
> >
> > DX Engineering (another great compuany to do business with) recomends
> these
> > two products:
> >
> > http://www.dxengineering.com/
> >
> >
> > 3M Temflex 2155 Rubber Splicing Tape followed with a covering of
> > Scotch Super 33+ tape
> >
> > The rubber conforms tightly with the connectors and waterproofs the
> > connection while the Super 33+ tape seals everything up and protects the
> > joint from UV degredation and mechanical abrasion.
> >
> > There is very little adhesion between the Temflex and your hardware so
> when
> > you want to rework the connection, it comes away very clean with no
> residue.
> > Great system!
> >
> > Dave
> >
> >
> >> -----Original Message-----
> >> From: time-nuts [mailto:time-nuts-bounces at febo.com <javascript:;>] On
> Behalf
> >> Of Ryan Stasel
> >> Sent: Thursday, April 21, 2016 10:08
> >> To: Discussion of precise time and frequency measurement
> >> Subject: Re: [time-nuts] RG6 or LMR400 for GPS Antenna
> >> (Symmetricom 58532A and T-bolt)
> >>
> >> All,
> >>
> >> Really awesome answers, thanks!
> >>
> >> For the sealing question, it was more of a "should I bother
> >> with something like anti-seize" or the like on the actual
> >> thread-thread N interface. The actual connector crimp, was
> >> planning on just using a couple layers of the heat-shrink
> >> with adhesive. That is all going to be internal to the mast
> >> anyway, so direct weather contact should be minimal. It's
> >> also on the side of my chimney, that gets very little to no
> >> direct sun, so UV exposure should be minimal. But good note
> >
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