3单元的6米波“Hentenna怪天线”及HF天线参数
3 element Hentenna for 6m
3单元的6米波Hentenna （Hentenna还可以多单元工作，如同八木一样组成多单元的可以增强增益，指向性更强，太牛了！）
Front gain : 8.56dBd
F/B ratio : 20.0
Radiation angle : Lower than topical 6 element Yagi.
* This antenna performance is similar to 5.2m boom 6 element Yagi.
* Check the pictures below for more information.
Director Radiator Reflector Height (H) 2.94m 2.99m 3.06m Width (W) 1.00 m 1.00m 1.00m Position of Loop separator (S) 0.67m 0.68m 0.69m Element Position D-Ra: 1.11m - Ra-R: 1.57m
(MMANA Antenna Simulation Software by JE3HHT)
[size=+1]Hentenna measures
[size=+1]Hentenna has 3 important measures. They are H: height, W: width and S: (See right picture for the reference).
[size=+1] Following list is these standard measures for each armature bands.
[size=+1] For the adjustment, please refer to top page of Hentenna but the only thing you have to do is adjusting "S" measure moving a,b points.
80m 40m 30m 20m 17m 15m 12m 10m 6m 2m Freq.(MHz) 3.550
7.050
10.10
14.20
18.15
21.25
24.95
28.50
50.20
144.2
Wavelength (m) 84.51
42.55
29.70
21.13
16.53
14.12
12.02
10.53
5.976
2.083
Height: H (m) 44.25
21.28
14.85
10.56
8.26
7.06
6.01
5.26
3.00
1.04
Width : W (m) 14.08
7.09
4.95
3.52
2.75
2.35
2.00
1.75
1.00
0.35
Position of Loop separator : S (m) 8.45
4.26
2.97
2.11
1.65
1.41
1.20
1.05
0.60
0.21
[size=+1]Sample Picture of Hentenna for 15m band by ON6TZ
( H:6.72 m / W : 2.24m / S : 1.34m )
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