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On Sun, 22 Aug 2004 18:24:46 +0000 (UTC), "Reg Edwards"
wrote: You can accurately mathematically model a G5RV (and any other dipole with any feedline, coax or not, tuner and balun) using program DIPOLE3. But a G5RV, with its coax, has a somewhat worse performance, on the average, than any other multiband, random length dipole. Without the coax it is exactly the same as any other multiband, random length dipole except that, merely to preserve its name, you are stuck with a feedline that must be exactly 1/2-wave long at 14.15 MHz. Which is never the right length for your backyard and shack. As for the 'Half-size" G5RV, its the biggest joke ever played by manufacturers and salesmen on ex-CB'ers and novice purchasers. G5RV himself, a true, venerable, grand old gentleman of amateur radio, must squirm in his grave whenever the description is mentioned. Download program DIPOLE3 from the website below in a few seconds and run immediately. No unzipping inconvenience. In view of the advertised popularity of the G5RV the basic data can be entered in the program with a single key-stroke. You must enter data for the 1/2-size G5RV, or any other dipole, yourself. Incidentally, the best performance multi-band dipole is of a random length which fits into your back yard, fed with any random length of 450-ohm line, or a 500 or 600-ohm open wire line, which also fits in your back yard, in conjunction with a tuner. Spend your money on the tuner. Simplicity Invariably Rules! --- ................................................. .......... Regards from Reg, G4FGQ For Free Radio Design Software go to http://www.btinternet.com/~g4fgq.regp ................................................. .......... Jim, take Reg's advice seriously concerning what he says is the best performance multi-band dipole. He's exactly right. Forget the 1/2 size G5RV. Walt, W2DU |
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