[TowerTalk] Cable TV hardline question

[Marc Wullaert]

you van use catv cable on your antennes buth you have to make 1/4 wave
transformer
from 60-62ohms coax to the antenna.
I'm using mine for beverages reception and it is working ok here.
marc on4ma

----- Original Message -----
From: "Tim Holmes" <W8TAH at Zoominternet.net>
To: <TowerTalk at contesting.com>
Sent: Friday, October 29, 2004 1:04 PM
Subject: Re: [TowerTalk] Cable TV hardline question


> I also came up with some Cable TV hardline.  Its 1/2 inch (I think) -
> Jacketed in PVC with an Air Dialectric.  I have been looking for ways to
> connect it for my VHF / UHF antennas.  Also I am concerned about the
> impedence mismatch.  I know you can build transformers, but I am not yet
> sure how (been getting bombed at work, haven't had much time for
> research)  The compression fitting connections that were suggested look
> like just the ticket, does anyone have any good ideas on the transformers?
>
> Thanks
>
> TIM
> W8TAH
>
> Tower (K8RI) wrote:
>
> > You may get a variety of answers, but I have used a lot of  the 3/4
> > inch stuff over the years and was quite happy with the results. It
> > worked well with long runs as long as there were no sharp bends.  The
> > 1/2 inch is quite fragile while the 3/4 inch is pretty rugged.
> > Connectors for both sizes are relatively easy to make out of brass
> > compression fittings.
> >
> > The 3/4 inch fittings http://www.rogerhalstead.com/ham_files/conn.htm
> > while the 1/2 inch can be made with a PL-259 and a 1/2 inch
> > compression coupling.
> >
> > At one time I had almost a full reel, but most of that has been used.
> > I think I may have a 150 or 200 feet left, but none in the air at
> > present.
> >
> > Roger Halstead (K8RI, EN73 & ARRL Life Member)
> > N833R, World's Oldest Debonair (S# CD-2)
> > www.rogerhalstead.com
> >
> >
> >> Today the power company took down the overhead lines coming up the
700ft
> >> driveway to my farm (in preparation for moving our circa 1870's
> >> farmhouse to
> >> the frontage of the farm onto a new foundation).  For the asking the
> >> power
> >> company gave me the telephone poles (ahh...a great place to put up a
> >> 6 or 10
> >> meter yagi).  When the cable tv guy was up in his bucket truck taking
> >> down
> >> the cable hardline I asked him "what are you going to do with the
> >> cable" He
> >> replied "we have to throw it in the dumpster".  I told him I was a
> >> ham and
> >> might be able to use it, so they gave me the cable for the asking.
> >> He also
> >> said they throw out hundereds of feet of this stuff everyday!!
> >>
> >> So the question is, is the 75ohm aluminum shielded hardline of good
> >> quality
> >> or not?  Is it acceptable for running trunklines to the beverages?
> >> How long
> >> will it last buried not inside a pipe?
> >>
> >>
> >> _______________________________________________
> >>
> >> See: http://www.mscomputer.com  for "Self Supporting Towers",
> >> "Wireless Weather Stations", and lot's more.  Call Toll Free,
> >> 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
> >>
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> >
> >
> > _______________________________________________
> >
> > See: http://www.mscomputer.com  for "Self Supporting Towers",
> > "Wireless Weather Stations", and lot's more.  Call Toll Free,
> > 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
> >
> > _______________________________________________
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> >
> >
>
> _______________________________________________
>
> See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
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