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thkummi
2021-08-19 15:33:16 +02:00
committed by GitHub
parent 96616bb2bd
commit 470014eaee
5 changed files with 138 additions and 6 deletions
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groundplane.c
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/*
Lambda/4 Groundplane Antanna Calculator
Copyright (C) 2021 Thomas Kummer
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include "groundplane.h"
void gp_calc(float *f, float *unit_factor, float *lambda, float *l1, float *l2){
*lambda = ( 29971000 / *f ) / 100;
*l1 = (0.96 * *lambda * 0.25) * *unit_factor;
*l2 = (0.96 * *lambda * 0.28) * *unit_factor;
}
void gp_print(float *f, float *unit_factor, float *lambda, float *l1, float *l2, int *unit_index){
printf(" Calculated for %f mHz\n", *f);
printf("\n");
printf(" Vertical Radiator %f ", *l1); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
printf(" Radials %f ", *l2); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
printf("\n");
printf("\n");
printf(" O\n");
printf(" I\n");
printf(" I\n");
printf(" Radiator I\n");
printf(" I\n");
printf(" I\n");
printf(" I\n");
printf(" I\n");
printf(" ___|___ \n");
printf(" /' | '\\ \n");
printf(" \\.__|__./ \n");
printf(" /| 50 |\\ \n");
printf(" / | Ohm | \\ \n");
printf(" Radial / ~~~~~~~~~ \\ \n");
printf(" / \\ \n");
printf(" / \\ \n");
printf("\n");
printf(" 3 - 6 radials are usual \n");
printf("\n");
}