This was my position, as well.
You can do all sorts of things that will sort of work, or you can
follow generally accepted engineering practices. As far as I know,
and as I understand the original question, good practice calls for an
impedance transformer here. Doubly so, when you can construct it
yourself, set it up for your unique situation, and do so for less than
ten bucks.
They used to tell me that it was more efficient to spend time and
money on your antenna system than amplifiers, etc. This is part of
your antenna system. Do this properly and it will result in a
difference you can hear.
Jeff/KD4RBG
On Wed, Oct 21, 2009 at 6:37 PM, Pete Stark K4OM <pstark@suddenlink.net> wrote:
> If only there were a device for connecting a BALanced device to an UNbalanced
> device. We could use such a device for this problem.
>
> Pete K4OM
> ----- Original Message -----
> From: TexasRF@aol.com
> To: pstark@suddenlink.net ; richard@karlquist.com ; W1JCW@hotmail.com
> Cc: towertalk@contesting.com
> Sent: Wednesday, October 21, 2009 6:24 PM
> Subject: Re: [TowerTalk] Coax soldering
>
>
> Pete, the problem is there are no instructions for connecting coax to open
> wire.We were talking about fishing the center conductor through the braid to
> do the job. No connector involved at all in this case.
>
> 73,
> Gerald K5GW
>
>
>
> In a message dated 10/21/2009 5:16:12 P.M. Central Daylight Time,
> pstark@suddenlink.net writes:
> I have followed the mfg instructions to the letter for almost 50 years as a
> ham and 31 in broadcast tv and radio. Very few problems with solder or
> crimp connectors. When I did have a problem, it was because I didn't
> follow
> instructions. Directions for connectors are in the handbook. Fishing the
> braid thru the holes is loony. Need heat? Use one of the mini-torches.
> Use flux and a little vise.
>
>
> It is vital that instructions be followed on heliax type cable. To the
> letter.
>
> Pete K4OM
>
>
>
> ----- Original Message -----
> From: <TexasRF@aol.com>
> To: <richard@karlquist.com>; <W1JCW@hotmail.com>
> Cc: <towertalk@contesting.com>
> Sent: Wednesday, October 21, 2009 6:01 PM
> Subject: Re: [TowerTalk] Coax soldering
>
>
> > Rick has the answer. Fishing the center conductor through the opening in
> > the shield is easier if you provide a few inches of extra length and push
> > the
> > shield up the coax so it increases diameter a bit.
> >
> > The crimp terminals are ok but I personally would solder them to the coax
> > after crimping for long term reliability. If you use ring terminals, they
> > can be bent with long nose pliers to fit around the open wire conductors
> > and
> > then soldered to the open wire conductors.
> >
> > 73,
> > Gerald K5GW
> >
> >
> >
> >
> > In a message dated 10/21/2009 4:33:27 P.M. Central Daylight Time,
> > richard@karlquist.com writes:
> >
> > W1JCW wrote:
> >>
> >> Hi guys -
> >>
> >> What is your preferred way to solder an open wire feeder on say RG8 or
> >> RG213 ?
> >>
> >> I know some cut the brand down the middle, solder it at the base and
> > work
> >> their way to the tip.
> >> Some twist it then solder or flatting it.
> >>
> >> I am looking to try something new.
> >>
> >> Suggestions ?
> >>
> >> 73-
> >> W1JCW
> >> John
> >
> >
> > To answer the original question about lead dress on the coax:
> >
> > "Something new" (to you) is to use tweezers to displace the braid
> > near the "base" (ie away from the end) such that a hole is formed
> > in the braid. This is done without cutting. Then, needlenose
> > pliers are used to grab the dielectric and yank it through the
> > hole. Sounds tricky, but I've done it dozens of times. For smaller
> > coax (up to RG58) they have a tool called a "lead extractor" that
> > makes this easier. See:
> >
> > http://www.stanleysupplyservices.com/product-group.aspx?id=723
> >
> > This tool is too small for RG8, but gives you the idea of what you
> > want to do by hand.
> >
> > The other thing to do is install crimp terminals on the braid
> > and center conductor so that you are not soldering to the coax.
> >
> > Rick N6RK
> >
> > _______________________________________________
> >
> >
> >
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> >
> >
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> >
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