The easy way out or did the job properly and derived his numbers from the original DL6WU graphs. Yagi Calculator is a Windows program that also runs well on Linux, Ubuntu 8.10 under Wine, to produce dimensions for a DL6WU style long. Options are not checked for sensible numbers.DL6WU Yagi Design page. If the input file is edited manually and done incorrectly, there can be unpredictable results.

BUGS Bugs should be reported to: David Kirkby G8WRB Bugs tend actually to be fixed if they can be isolated, so it is in your interest to report them in such a way that they can be easily reproduced. Joe Mack NA3T SEE ALSO input(1), output(1), yagi(1), optimise(1). David Kirkby G8WRB with help with the conversion to the DOS/PC enviroment from Dr. The DOS version is no longer being developed, so the DOS executables included with the distribution are not upto date with the current source code. The DOS version as distributed requires a 386 PC with a 387 maths coprocessor. PLATFORMS Both DOS and and Unix versions have been built. A 486, Pentium, and I assume later processors of this series will run it without any extra hardware. EXE files as distributed require a 387 maths coprocessor to be present and will not run without it. FILESįilename Yagi description, created by first.įilename.out Binary data file, created by yagi.įilename.dat Performance of antenna, created by output.įilename.gai Gain of antenna, created by output. LIMITATIONS Filenames, including full path, can't exceed 90 characters.ĭoes not take into account the variation of impedance of a dipole with change in wavelength/diameter 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. 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. 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.

NAME first - Yagi-Uda project quick antenna builder SYNOPSIS first filename elements f_min f_design f_max f_step diameter DESCRIPTION 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.

Dl6wu yagi design program