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## [TowerTalk] Re: [Dx] question about G5RV antennas

 To: [TowerTalk] Re: [Dx] question about G5RV antennas n4kg@juno.com (n4kg@juno.com) Mon, 9 Jul 2001 14:02:07 -0600
 ```The pattern and gain will be different on every band. Where the antenna acts as a long wire, maximum gain will be in the lobes closest to the wire, typically 25 to 35 degrees each side of the wire depending on length and frequency. Here is an empirical analysis I wrote on the subject in 1997. There might be 2 dB gain at the center of the peak lobe on the high bands. Less on the lower bands. Some descriptions imply vertical radiation from the 2 wire transmission line. Don't believe it. Tom N4KG The G5RV is a 100 foot center fed wire antenna. Think of it as a long wire for each band and look up the patterns for each length in the ARRL Antenna Book or other source. 80M .35 WL "short" dipole figure 8 pattern broadside to wire 40M .70 WL "long" dipole figure 8 pattern broadside to wire 30M 2X .5 WL Two Half waves in phase - figure 8 pattern 50 degrees wide broadside to wire 20M 3/2 WL current fed LW - 6 lobes - 4main lobes approx 35* to wire 2 minor lobes broadside to wire 17M 2X 1 WL voltage fed LW's - 4 lobes approx 40* to wire 15M 2X 1.1 WL voltage fed LW's - 4 major lobes, possible minor (this is my "intuitive analysis...check w/modeling program) 12M 5/2 WL current fed LW - 10 lobes - 4 main lobes approx 30* from wire 10M 2X 3/2 WL voltage fed LW - 6 lobes - 4 main lobes approx 35* to wire 2 minor lobes broadside to wire de Tom N4KG 11 / 26 / 97 On Mon, 9 Jul 2001 larry fields writes: > Last march,while I was operating from Manila,as DU1, > I was using 2 G5RV's,and they worked pretty good.. > My question is what is the DB gain on these > antennas,I have never seen any recent reviews on > em..the antennas are the 100 foot and 50 foot > models,and the 100 ft. was operated at 51 feet above > the ground.. > Thanks,Larry,n6hpx/du1 > > p.s. I am thinking of using a M2loop for 6 meters,next > time I return there in January..whats a opinion on this.. > ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj. List Sponsor: Are you thinking about installing a tower this summer? Call us for information on our fabulous Trylon Titan self-supporting towers - up to 96-feet for less than \$2000! at 888-833-3104 www.ChampionRadio.com ----- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com ```
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