ANT- TONA - F9FT -  70 cm - 21 element

 "DX" version  (=432 MHz)

18.1 dBi - (according to the TONA)

 

element

lengh
[mm]

distance from reflector [mm]

rem.
1 - Reflector 360 0  
2 - Driven element 325 x 45 136  see fig 2 &  3
3 - Director 1 325 183  
4 - Director 2 315 253  
5 - Director 3 305 434  
6 - Director 4 305 619  
7 - Director 5 300 818  
8 - Director 6 300 1053  
9 - Director 7 300 1323  
10 - Director 8 295 1594  
11 - Director 9 290 1864  
12 - Director 10 290 2133  
13 - Director 11 290 2404  
14 - Director 12 290 2674  
15 - Director 13 285 2944  
16 - Director 14 285 3211  
17 - Director 15 285 3487  
18 - Director 16 280 3758  
19 - Director 17 280 4028  
20 - Director 18 275 4292  
21 - Director 19 275 4568  
       
Boom cca 4575   17 x 17 mm
Bazooka 130   D = 14, d = 12 (see fig.1 & 4)
all element      D = 4 mm
       
Stacking distance      
E plane 1,62 m   for minimum side lobes
H plane 1,58   for minimum side lobes


Fig. 1 Bazooka

 
Fig. 2 Driven element


Fig. 3 Part with driven element


Fig. 4 Bazooka