> -----Original Message----- > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > [EMAIL PROTECTED] On Behalf Of Laryn Lohman > Sent: Monday, February 19, 2007 8:27 PM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] Re: Antenna gain specs > > --- In Repeater-Builder@yahoogroups.com, "Paul Holm" <[EMAIL PROTECTED]> > wrote: > > > > Reading the replies that mentioned gain specs, I can't help but > think of our > > last ham club meeting. An older member persuaded the club to > replace the > > VHF repeater antenna with a Diamond X500HNA rather than a DB-224 > because the > > Diamond "has 8.3 dB gain". > > > > Yup, Paul, you've caught on. > > Diamond must be good; very good. They've bent the laws of physics > again. Diamond's 18 ft. long antenna has more <gain> than a DB > Products, Sinclair, etc., which are actually slightly longer. 8.3db > gain over what? I'm here to tell you, in my humble opinion, that the > Diamond's actual gain over a dipole is closer to 6dbd. > > Laryn K8TVZ >
It is also interesting to note that hardly any of the manufacturers of two way antennas actually have an antenna test range or have ever tested the antennas on a range. Most all the patterns that you see in the catalogs are computer generated. 73 Gary K4FMX
