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https://github.com/stevenhowes/ctenna.git
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thkummi
79 lines
3.2 KiB
C
79 lines
3.2 KiB
C
/*
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Reference: https://de.wikipedia.org/wiki/HB9CV-Antenne
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The HB9CV antenna is related with the "ZL-Special"
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HB9CV Antanna Calculator
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Copyright (C) 2021 Thomas Kummer
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include "hb9cv.h"
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void printunits (int *unit_index){
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switch(*unit_index){
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case 1: printf("mm\n"); break;
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case 2: printf("inch\n"); break;
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}
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}
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void hb9cv_calc (float *f, float *unit_factor, float *lambda, float *l1, float *l2, float *l3, float *l4, float *l5, float *bdiam, float *raddiam){
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*lambda = ( 30000000 / *f) / 100;
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*l1 = (( 0.92 * *lambda * 5) / 10) * *unit_factor;
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*l2 = (( *lambda * 5) / 10) * *unit_factor;
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*l3 = (( *lambda * 1.25) / 10) * *unit_factor;
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*l4 = (( *lambda * 1.25) / 20) * *unit_factor;
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*l5 = (( *lambda * 1.35) / 20) * *unit_factor;
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*bdiam = ( *lambda * 0.0072) * *unit_factor;
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*raddiam = ( *lambda * 0.0036) * *unit_factor;
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}
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void hb9cv_print (float *f, float *unit_factor, float *lambda, float *l1, float *l2, float *l3, float *l4, float *l5, float *bdiam, float *raddiam, int *unit_index){
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printf(" Calculated for %f mHz\n", *f);
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printf("\n");
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printf(" Lambda is %f mm\n", *lambda);
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printf(" L1 Driven Element is %f ", *l1); printunits(&*unit_index);
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printf(" L2 Reflector is %f ", *l2); printunits(&*unit_index);
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printf(" L3 element spaceing is %f ", *l3); printunits(&*unit_index);
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printf(" L4 Matching on dr. element is %f ", *l4); printunits(&*unit_index);
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printf(" L5 Matching on reflector is %f ", *l5); printunits(&*unit_index);
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printf(" Boom Diam. is %f ", *bdiam); printunits(&*unit_index);
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printf(" Radiator Diam. is %f ", *raddiam); printunits(&*unit_index);
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printf("\n");
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printf(" connect feed on this side \n");
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printf(" --------------------------L1 \n");
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printf(" L4|--\\| \n");
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printf(" || \n");
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printf(" L3| \n");
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printf(" || \n");
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printf(" | \\--|L5 \n");
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printf(" ----------------------------L2 \n");
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printf("\n");
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printf("\n");
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printf(" ===============================================\n");
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printf(" || \\ |\n");
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printf(" || C1 ___\\______\n");
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printf(" || \\____/ ___|__\n");
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printf(" || | /' | '\\ \n");
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printf(" ||---)------\\.__|__./\n");
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printf(" || | | 50 |\n");
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printf(" || | | Ohm |\n");
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printf("\n");
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printf(" C1 10m-Band 50pF 6m-Band 30pF 2m band 12pF \n");
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printf("\n");
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printf("\n");
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}
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