35 element Yagi antenna

1240 / 1260 MHz

Part #: 20636

Electrical Data

Radiation at 1255 MHz:

Effective electrical length: 12.83 l
Isotropic gain: 20.0 dBi
Aperture angle at -3 dB:  E plane: 2 x 7.9 °
 H plane: 2 x 8.1 °
First side lobe set:
 E plane: -17,5 dB @ 22 °
 H plane: -16,5 dB @ 22 °
Rear protection: -22,5 dB
Stray radiation:  E plane : -35 dB
 H plane: -30 dB


General data:
Gain bandwidth, at -1 dB: 1205 thru 1271 MHz
Nominal impedance: 50 W
Match bandwidth at SWR < 1.3/1: 1251 thru 1267 MHz
Maximum RF power (SSB, peak): 300 W


Two antenna stacking:
recommended distance from center to center of element at 1255 MHz, for optimal "gain - side lobe" compromise.

E plane H plane
Electrical distance: 3.40 l Electrical distance: 3.40   l
Physical distance: 0.82 m
(2' 8")
Physical distance: 0.82 m
(2' 8")


Physical data

Boom and support leg: Alum. alloy 3005, sq pipe 16.5x16.5mm, 1mm th.
Element material: Copper wire, enameled, 3mm
Assembly hardware and accessories: Galvanized and stainless steel
Connector: N
Overall length: 3.07 m (10' 1")
Mass: 2.5 kg
WindloadHorizontal
polarization
Vertical
polarization
Effective wind area: 0.13 m2 0.11 m2
Approximate wind load:
25m/s (90km/h 55mph):
45m/s (160km/h 100mph):

5.0 daN
16.1 daN

4,2 daN
13.6 daN

 

 

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