ORBIT FR Biconic antennas - Manual (Page 2)

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Measur
ement antennas
Electrical characteristics
Part number SB 75 SB 130-A
Type of antenna Biconic Biconic
Frequency range 75 – 230 MHz 130 – 400 MHz
Gain variation
over azimuth
± 0.1 dB ± 0.1 dB
VSWR < 1.9 < 1.9:1 [130-350] MHz
< 2.3:1 [350-400] MHz
Return loss < -10 dB < -10 dB [130-350] MHz
< -8 dB [350-400] MHz
Impedance 50 Ohms 50 Ohms
Peak directivity 1.3 – 1.9 dBi 1.3 – 1.9 dBi
Effi ciency > 92% > 92%
Mechanical characteristics
Part number SB 75 SB 130-A
Dimensions
L 1658 mm 829 mm
W 984 mm 492 mm
H 984 mm 492 mm
D 1080 mm 540 mm
E 166 mm 88 mm
Weight (approx) < 15 Kg 6.8 Kg
Connector N Female (1) N Female (1)
Treatment Alodine 1200 (2) Alodine 1200 (2)
Color Blue Blue
(1) SPINNER ref # BN058739 and BN133670
(2) Equivalent to MIL-C 5541E class 3
Typical elevation pattern at 140 MHz
Typical elevation pattern at 260 MHz
Typical elevation pattern at 400 MHz
Mechanical drawing
“L”
“E”
“w”= “H”
“D”