A PL-259 connector is an 8 ohm connector. It will only present an impedance mismatch if the coaxial cable it is used with is not 8 ohm impedance cable. David Sorenson Duluth, MN ****** On Wed, 6 May 2009 09:00:15 -0700 "Ed Bruette" <edn7nvp@msn.com> writes: > Ron, > > The PL-259 presents an impedance mismatch in the antenna system, > hence the > signal loss. The "N" connector does not. Additionally the "N" > connector is > much more WX resistant and when properly assembled will not allow > water > intrusion. The prudent installer will still provide external layers > of > sealing for connectors that are exposed to the elements. > > Ed, N7NVP > PT-38 "Makin' Do" > Poulsbo, WA > > > -----Original Message----- > > Hi Ron, first, my experience in the past was in commercial FM > broadcast > engineering (30 years ago). I have no experience in Ham radio. A > PL-259 is > essentially a "consumer grade" coaxial RF connector. Type N > connectors are > more industrial grade. They have greater connectivity by their > inherent > design and thus less signal loss. I presume that is why they are > preferred > by professional/industrial applications and hence Ham radio people. > (They > are also more difficult to install on a coax than a PL-259.) > > David Sorenson > Duluth, MN > > > > > David, can you tell us why some HAMs substitute type "N" > connectors > > for type PL-259? I assume it has something to do with > > efficiency/signal loss. > > > > Ron Rogers > _______________________________________________ > http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering > > To unsubscribe or modify your subscription options (get password, > change email address, etc) go to: > http://lists.samurai.com/mailman/options/trawlers-and-trawlering > > Trawlers & Trawlering and T&T are trademarks of Water World > Productions. Unauthorized use is prohibited. > > ____________________________________________________________ Criminal Lawyers - Click here. http://thirdpartyoffers.juno.com/TGL2141/fc/BLSrjpTOVoMp0oY22E6eDe6DrpLS9dG9sf4gDV7v1GQY1Uo4tcz0KJO5qUI/

I believe marine antennas and the coax used to feed them are usually 50 ohm impedance. The radio expects to see a 50 ohm load. Ed, N7NVP PT-38 "Makin' Do" Poulsbo, WA -----Original Message----- A PL-259 connector is an 8 ohm connector. It will only present an impedance mismatch if the coaxial cable it is used with is not 8 ohm impedance cable. David Sorenson Duluth, MN