| Open-sleeve principles | VHF-Duoband principles | Duoband-Yagi 6m/10m | 10m-Dipole+ 3-El.- 6 m | Triband-Yagi 6m/4m/2m | Duoband-Dipol 2m/70cm | 2m/70cm 2+2/3 El. | 2m/70cm 4+5 El. | 2m/70cm 5+8 El. |
Yagi with 5 Elements on 2 m, 8 Elements on 70cm and one Feedpoint
Version 1: Ultralight with 3,2-mm-Elements
Version 2: With 8- and 10-mm-Elements (see down), built by SQ9VPA
The Yagi is optimized for the CW/SSB-parts of the bands, but usuable for the full bands.
For the complete 2m-data see the 5-Element-ultralight-Yagi
And here for the real hard boiled OMs:
Winter-QRP-Contest from JN99CL, tnx to Petr, OK2AIA
|
Band |
Gain |
F/B |
3dB-angle
hor. |
3dB-angle
ver. |
|
144,3
MHz |
8,45dBd |
24dB |
51,0° |
64,4° |
|
432
MHz |
8,86dBd |
14dB |
28,2° |
54,2° |
 |
 |
Element-Lengths and Positions, all Elements 3,2mm-Aluminium-Welding-Rods (exept Radiator) for the lightweight-Yagi. For the station at home Lucjan, SQ9VPA has redesigned the Yagi with 10-mm-elements.
|
El.-Nr. |
Element |
Length |
Position |
|
1 |
Reflector
for 2m |
1035
mm |
0
mm |
|
2 |
Reflector
for 70cm |
326
mm |
160mm |
|
3 |
Radiator
2m and 70cm |
995
mm (4mm) |
280
mm |
|
4 |
Director
1 for 70cm |
329
mm |
304
mm |
|
5 |
Director
2 for 70cm |
320
mm |
405
mm |
|
6 |
Director
1 for 2m |
954
mm |
430
mm |
|
7 |
Director
3 for 70cm |
292
mm |
550
mm |
|
8 |
Director
4 for 70cm |
280
mm |
800
mm |
|
9 |
Director
2 for 2m |
944
mm |
950
mm |
|
10 |
Director
5 for 70cm |
310
mm |
980
mm |
|
11 |
Director
6 for 70cm |
284
mm |
1160
mm |
|
12 |
Director
7 for 70cm |
299
mm |
1450
mm |
|
13 |
Director
3 for 2m |
929
mm |
1480
mm |
The 5/8-El.-Yagi with 8- and 10-mm-Elements (redesigned by SQ9VPA)
(see pictures below)
 |
|
 |
 |
| The 5-/8-Element-Duoband-Yagi as portabel version, built by Gökhan, TB1CIG | |
 |
 |
|
El.-Nr. |
Element |
Position |
Length (8 mm) | Length (10 mm) |
|
1 |
Reflector
for 2m |
0
mm |
1034 mm | 1032 mm |
|
2 |
Reflector
for 70cm |
160mm |
322 mm | 319 mm |
|
3 |
Radiator
2m and 70cm |
280
mm |
972 mm (12 mm) | 972 mm (12 mm) |
|
4 |
Director
1 for 70cm |
312
mm |
321 mm | 318 mm |
|
5 |
Director
2 for 70cm |
405
mm |
313 mm | 311 mm |
|
6 |
Director
1 for 2m |
430
mm |
934 mm | 928 mm |
|
7 |
Director
3 for 70cm |
550
mm |
278 mm | 273 mm |
|
8 |
Director
4 for 70cm |
800
mm |
262 mm | 256 mm |
|
9 |
Director
2 for 2m |
950
mm |
921 mm | 915 mm |
|
10 |
|
980
mm |
300 mm | 297 mm |
|
11 |
Director
6 for 70cm |
1160
mm |
268 mm | 262 mm |
|
12 |
Director
7 for 70cm |
1450
mm |
286 mm | 282 mm |
|
13 |
Director
3 for 2m |
1480
mm |
911 mm | 904 mm |
