mirror of
https://github.com/stevenhowes/ctenna.git
synced 2026-05-26 15:53:28 +01:00
thkummi
80 lines
3.7 KiB
C
80 lines
3.7 KiB
C
/*
|
|
Reference: https://de.wikipedia.org/wiki/HB9CV-Antenne
|
|
The HB9CV antenna is related with the "ZL-Special"
|
|
|
|
HB9CV 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 "hb9cv.h"
|
|
/*
|
|
void printunits (int *unit_index){
|
|
switch(*unit_index){
|
|
case 1: printf("mm\n"); break;
|
|
case 2: printf("inch\n"); break;
|
|
}
|
|
}
|
|
*/
|
|
|
|
void hb9cv_calc (float *f, float *unit_factor, float *lambda, float *l1, float *l2, float *l3, float *l4, float *l5, float *bdiam, float *raddiam){
|
|
*lambda = ( 30000000 / *f) / 100;
|
|
*l1 = (( 0.92 * *lambda * 5) / 10) * *unit_factor;
|
|
*l2 = (( *lambda * 5) / 10) * *unit_factor;
|
|
*l3 = (( *lambda * 1.25) / 10) * *unit_factor;
|
|
*l4 = (( *lambda * 1.25) / 20) * *unit_factor;
|
|
*l5 = (( *lambda * 1.35) / 20) * *unit_factor;
|
|
*bdiam = ( *lambda * 0.0072) * *unit_factor;
|
|
*raddiam = ( *lambda * 0.0036) * *unit_factor;
|
|
}
|
|
|
|
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){
|
|
printf(" Calculated for %f mHz\n", *f);
|
|
printf("\n");
|
|
printf(" Lambda is %f mm\n", *lambda);
|
|
printf(" L1 Driven Element is %f ", *l1); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
|
|
printf(" L2 Reflector is %f ", *l2); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
|
|
printf(" L3 element spaceing is %f ", *l3); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
|
|
printf(" L4 Matching on dr. element is %f ", *l4); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
|
|
printf(" L5 Matching on reflector is %f ", *l5); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
|
|
printf(" Boom Diam. is %f ", *bdiam); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
|
|
printf(" Radiator Diam. is %f ", *raddiam); switch(*unit_index){ case 1: printf("mm\n"); break; case 2: printf("inch\n"); break; };
|
|
printf("\n");
|
|
printf(" connect feed on this side \n");
|
|
printf(" --------------------------L1 \n");
|
|
printf(" L4|--\\| \n");
|
|
printf(" || \n");
|
|
printf(" L3| \n");
|
|
printf(" || \n");
|
|
printf(" | \\--|L5 \n");
|
|
printf(" ----------------------------L2 \n");
|
|
printf("\n");
|
|
printf("\n");
|
|
printf(" ===============================================\n");
|
|
printf(" || \\ |\n");
|
|
printf(" || C1 ___\\______\n");
|
|
printf(" || \\____/ ___|__\n");
|
|
printf(" || | /' | '\\ \n");
|
|
printf(" ||---)------\\.__|__./\n");
|
|
printf(" || | | 50 |\n");
|
|
printf(" || | | Ohm |\n");
|
|
printf("\n");
|
|
printf(" C1 10m-Band 50pF 6m-Band 30pF 2m band 12pF \n");
|
|
printf("\n");
|
|
printf("\n");
|
|
}
|
|
|
|
|
|
|
|
|