Any leakage in your shield, in your system, has the potential to KILL your receiver. WHY TAKE A CHANCE? I disagree that double shielding is "over blown". I have enough problems with a receive sensitivity of .25uV for 20DB quieting on the antenna side of my duplexer, with RG400 double shielded silver plated connecting to 35 feet of Super Flex, to take any chances with inferior cable. 73 AC0Y
--- In [email protected], Bob Dengler <[EMAIL PROTECTED]> wrote: > At 10/16/2004 07:31 PM, you wrote: > > > >--- In [email protected], James <[EMAIL PROTECTED]> wrote: > > > If you ever find a piece of coax on a duplexer that is not double > >shielded at the very least, REPLACE IT ! IT'S A PIECE OF CRAP ! > > Incorrect; double-shielding is overblown. I once ran an isolation test > using a pair of 6 ft. Pomona RG-58 test cables tightly twisted together to > maximize coupling between the two cables. The measured isolation was over > 85 dB through 500 MHz, in the noise of the test instrument. This may be > why Phelps Dodge & others originally used RG-8 jumpers on their duplexer, > at least until the braid began to oxidize. > > What's important is the quality of the shield, not quantity. However, you > will be hard-pressed to find any single-shielded coax with silver plating, > so I suppose the point is moot. If the coax has silver-plated braid, it's > double-shielded. If it's superflex, it's also 100% shielded. > > Bob NO6B Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
