Re: [TowerTalk] Cable TV hardline question

[Tim Holmes <W8TAH@Zoominternet.net>]

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.
> >
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
>
>
> _______________________________________________
>
> 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.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk

_______________________________________________

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.

_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk