DG7YBN - Low Noise Yagis
 

Designs  
(x)
 

144 MHz Antennas

  Last Update Nov. 03rd 2020



     



Yagi identifier notation:

YBN = with standard Dipole (Straight Split or Folded), GTV = with bent Dipole
n = narrow-band version; m = of medium band width, w = wide-band version, z is for low impedance Z, an added LT (in tribute to the EF0210LT by YU7EF) stands for exceptionally low Antenna Temperature




GTV Yagis with bent DE   -   direct 50 ohms


# El.   Name Length Gain   Link
6   GTV 2-6m 2.37 m 11.9 dBi  
7   GTV 2-7w 2,69 m 12.3 dBi  
7   GTV 2-7n 3.06 m 12.8 dBi  
8   GTV 2-8w 3.71 m 13.4 dBi  
8   GTV 2-8n 3.82 m 13.6 dBi  
9   GTV 2-9n 4.33 m 14.0 dBi  
9   GTV 2-9m 4.49 m 14.0 dBi  
10   GTV 2-10LT 5.07 m 14.5 dBi  
11   GTV 2-11LT 5.97 m 15.1 dBi  
12   GTV 2-12m 6.78 m 15.5 dBi  
12   GTV 2-12n 6.87 m 15.7 dBi  
14   GTV 2-14w 8.34 m 16.2 dBi  
16   GTV 2-16w 9.93 m 16.9 dBi  
18   GTV 2-18w 11.74 m 17.6 dBi  
19   GTV 2-19m 12.34 m 17.8 dBi  




Yagis with conventional Dipole   -   direct 50 / 200 ohms


# El.   Name Length Gain   Link
2   YBN 2-2w 0.47 m 6.4 dBi  
9   YBN 2-9m 4.49 m 14.0 dBi  

The 5 - 8 concept, an extendable Yagi - Steps 1, 2 ,3, 4, 5:

# El.   Name Length Gain   Link  
5   YBN 2-5m 1.55 m 10.2 dBi   Extendable to YBN 2-6,7,8m
6   YBN 2-6m 1.88 m 11.1 dBi   Extendable to YBN 2-7,8,10w
7   YBN 2-7m 2.72 m 13.1 dBi   Extendable to YBN 2-8,10w
8   YBN 2-8m 3.55 m 13.1 dBi   Extendable to YBN 2-10w
10   YBN 2-10w 5.02 m 14.3 dBi   Final extension, same driver cell




Low Impedance Yagis with conventional Dipole   -   12.5 / 50 ohms


# El.   Name Length Gain   Link
10   YBN 2-10wz 5.10 m 14.4 dBi  
12   YBN 2-12wz 6.80 m 15.5 dBi  






73, Hartmut, DG7YBN


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