432MHz 23 - 30 - 38 ELEMENTI
ANTENNA DESIGN : 432 MHz. DJ9BV (DUBUS 2/1991) BOOM 20 X 20 mm. ELEMENTS Diam. 4 mm. isolati DIPOLE 325 x 61 mm in alluminio diam.8 mm BALUN 240 mm RG142 REFLECTOR n°4 elementi da 340 mm. spaziati a 150 mm.
ELEMENT |
23 |
30 |
38 |
GAIN dBD |
16.2 |
17,4 |
18,5 |
F/B |
24,9 |
29,5 |
27,1 |
E ANGLE |
23.5° |
20.9 |
18.7 |
H ANGLE |
24.5° |
21.5° |
19.1 |
ELEMENT |
LENGTH mm. |
DISTANCE FROM REFLECTOR mm. |
REFLECTOR |
340 |
0 |
DIPOLE |
325 |
130 |
DIRECTOR 1 |
312 |
185 |
DIRECTOR 2 |
306 |
310 |
" 3 |
302 |
460 |
" 4 |
299 |
635 |
" 5 |
297 |
830 |
" 6 |
294 |
1040 |
" 7 |
291 |
1260 |
" 8 |
287 |
1490 |
" 9 |
287 |
1730 |
" 10 |
287 |
1980 |
" 11 |
283 |
2240 |
" 12 |
283 |
2510 |
" 13 |
283 |
2790 |
" 14 |
280 |
3070 |
" 15 |
280 |
3350 |
" 16 |
280 |
3630 |
" 17 |
277 |
3910 |
" 18 |
277 |
4190 |
" 19 |
277 |
4470 |
" 20 |
275 |
4750 |
" 21 |
275 |
5030 |
" 22 |
275 |
5310 |
" 23 |
272 |
5590 |
" 24 |
272 |
5870 |
" 25 |
272 |
6150 |
" 26 |
269 |
6430 |
" 27 |
269 |
6710 |
" 28 |
269 |
6990 |
" 29 |
269 |
7270 |
" 30 |
267 |
7550 |
" 31 |
267 |
7830 |
" 32 |
267 |
8110 |
" 33 |
267 |
8390 |
" 34 |
267 |
8670 |
" 35 |
267 |
8950 |
" 36 |
265 |
9230 |