here in Russia, we love cheap cables too, and of cource they are OK in
many many cases and serve for years, but I learned hard way and not once
that if your need a trouble free life then go proven quality cables and
matching connectors
any coax is just a transmition line ...
in a receiving systems, transmition lines are allowed to be with some
attenuation, but bad connections, RF leakage, watter ingress or a time
degradation of a thin copper clad is not allowed
YMMV
2012/1/3 Doug Renwick <ve5ra@sasktel.net>
> Here we go again. One camp saying don't go cheap and another camp saying
> cheap is fine. I pay 5 cents a foot for flooded RG-6 from Shaw Cable.
> Copper coated steel center plus braid and foil. My receive 4 square run is
> about 700 feet. I can hear more than I can work. I don't need expensive
> RG-6 for rodents to chew on. The rodents enjoy the cheap cable. Cheap in
> price but just maybe not cheap in quality. YMMV.
>
> Doug
>
> >-----Original Message-----
> >
> >On 1/3/2012 7:06 AM, Andrey Fedorishchev wrote:
> >> Cheap RG6, the one with CCS center conductor, sometimes shows quiet high
> >> losses (few db per 300ft.) at 1-5 mhz and at the same time quiet low at
> >> higher frequencies;
> >>
> >> Not only the losses but signal leakage is important and not every brand
> of
> >> RG213 or RG6 is suitable at some instalations;
> >
> >Yes on both counts. I've written a Q&A style tutorial about coax that
> >addresses these issues, and a lot more.
> >http://audiosystemsgroup.com/Coax-Stubs.pdf
> >
> >Another point -- some of us DO have long runs to our antennas, so losses
> >can be significant. I have two runs to TX antennas that are 350 ft and
> >two for 160M that are 280 ft. My neighbor, K6XX, has some runs that are
> >nearly 1,000 ft, for which he's using parallel runs of hard line.
> >
> >73, Jim K9YC
>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
--
Andrey Fedorishchev,
RA6LBS
www.RA6LBS.ru
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
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