That takes care of my idea to put one up for 160 !!
You guys just saved me a bucket of money, guess I'll use it to fill the
tank instead.
73, Dick, W1KSZ
> Date: Fri, 9 May 2008 17:57:17 -0500> From: RadioIR@charter.net> To:
> towertalk@contesting.com> Subject: Re: [TowerTalk] WTB: GAP VOYAGER and a
> Zero Five> > Here is an EZNEC simulation of the gain of a Zero Five using 32,
> 100 ft > radials, average ground, and 100 ft of RG213, also including a 4 to
> 1 > balun at the feedpoint as recommended by Zero Five and assuming no balun
> > loss. The gain numbers are all at 15 degrees elevation, regardless of >
> what the take-off angle is. The last number is the amount of power >
> dissipated in the coax assuming an input of 1500 watts.> > 1.8 MHz -17.5 dBi,
> 1292 watts> 3.5 MHz -8.1 dBi, 598 watts> 7 MHz -3 dBi, 226 watts> 10.1 MHz
> -1.7 dBi, 532 watts> 14 MHz -3.3 dBi, 585 watts> 18.1 MHz -4.3 dBi, 306
> watts> 21 MHz -3.1 dBi, 448 watts> 24.9 MHz -6.9 dBi, 674 watts> 28 MHz -12.2
> dBi, 362 watts> > Here are the gain numbers for the same set-up except no 4
> to 1 balun:> 1.8 MHz -22.2 dBi> 3.5 MHz -10 dBi> 7 MHz -3.6 dBi> 10.1 MHz
> -4.8 dBi> 14 MHz
-5.5 dBI> 18.1 MHz -5.2 dBi> 21 MHz -5.6 dBi> 24.9 MHz -9.6 dBi> 28 MHz -12.4
dBi> > This is really comparing apples and oranges, but just for reference, >
here is the gain of a half wave dipole (one on each band) at 43 feet > using
100 ft of RG213. The gain is at 15 degrees elevation regardless > of what the
take-off angle is, and the gain is broadside to the dipole.> > 1.8 MHz -5.9
dBi> 3.5 MHz -3.2 dBi> 7 MHz 0.15 dBi> 10.1 MHz 3.3 dBi> 14 MHz 5.9 dBI> 18.1
MHz 6 dBi> 21 MHz 6.3 dBi> 24.9 MHz 6.6 dBi> 28 MHz 5.6 dBi> > Jerry, K4SAV> >
> _______________________________________________> > > >
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