JE> > Well, I always thought it took a different formula to calculate
JE> > the length of a vhf antenna as opposed to an HF antenna.
JE>A dipole is a dipole is a dipole - don't matter if it's for 160m or 70cm.
Jeff, those wavelengths differ by a factor of nearly 230. Since there's
a practical limit on how thin a wire can be, I figure you're talking
about a 160 antenna made out of cable about two feet in diameter.
There is some merit to that, since it might have a low SWR over the most
of the band (maybe all of it?), but I think it's going to weigh several
tons. Of course I'm being absurd, but my point is that wire diameter
affects the length of the antenna when the diameter is more that a tiny
fraction of the wavelength, as it is at VHF and above. The formula is
in the Handbook (ARRL's for sure, but probably any of them).
73
___
X QMPro 1.53 X Everyone is gifted. Some open the package sooner.
--- Maximus 3.01
---------------
* Origin: Long_Island RB VAX/EC (V34/HST) [310] 370-4113 (1:102/138)
|