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first - Yagi-Uda project quick antenna builder


first filename elements f_min f_design f_max f_step diameter


The program first is one of a number of executable programs that forms part of a set of
programs, collectively known as the Yagi-Uda project , which were designed for analysis
and optimisation of Yagi-Uda antennas. first is used to define an antenna quickly, if you
are not interested in analysing a specific design (in which case use input ) but need to
get a design that is half-way reasonable so that it may be optimised. It is much faster in
use (since its not interactive) than input The design methodology that first is the DL6WU
antenna designs, which are valid for 10 or more elements, although first will calculate
for any number of elements. DL6WU reccomends a folded dipole, but the designs here are for
a simple dipole, since I don't yet know how to calculate the self and mutual impedances of
folded dipoles.


Filenames, including full path, can't exceed 90 characters.

Does not take into account the variation of impedance of a dipole with change in
wavelength/diameter of elements.

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