a) Frequency range: 3MHz～30MHz;
b) Polarization: Vertical;
c) Gain: ≥-24dBi;
d) Input impedance: 50Ω;
e) Voltage Standing Wave Ratio: ≤4;
f) H-plane radiation pattern: omnidirectional;
g) Power capacity: 300W;
h) RF Interface: N-50KF;
i) Installation method: flange mounting;
j) Interface location: side;
k) Weight: ≤5Kg;
1) Height: 3 meters
m) Lightning Protection Design: The antenna has a lightning protection function (DC grounding);
1. Environmental adaptability requirements (assessed with the complete machine)
Main equipment meets the requirementsGJB3947A-2009Requirements for Level 3 test equipment.
1) Operating temperature: indoor equipment 0℃~50℃, outdoor equipment -30℃~50℃
2) Storage temperature: -40℃~ 70℃
3) Relative Humidity: When the temperature range is 10℃~30℃, the relative humidity is 5~95%; when the temperature range is 30℃~40℃, the relative humidity is 5~75%; when the temperature is above 40℃, the relative humidity is 5~45%. (According to GJB3947A-2009 standard).
4) Indoor equipment is drop-resistant and shockproof
Shock: 20g, pulse width 11ms;
Vibration: Test parameters: 5Hz～500Hz, 0.015g²/Hz, 0.075g²/Hz, 0.0039g²/Hz, three axes six directions, 10 minutes per axis, device not operating.
5) Mold: No mold growth on the material (meets the GJB15.10-1986 test requirements)
6) Salt spray (outdoor equipment) at 35°C in coastal areas; salt solution concentration 5%, 48 hours (in accordance with GJB15.11-1986 test requirements).
7) Wind resistance stability: Outdoor equipment can operate normally under wind conditions of 38 km/h (below level 5) Wind resistance strength: Outdoor equipment is not damaged under wind conditions of 61 km/h (below level 7);
8) Lightning protection: The equipment should, in combination with the actual conditions of the BS site, take necessary lightning protection measures to meet the relevant requirements in GJB6784-2009 "General Requirements for JY Ground Electronic Facilities and Lightning Protection".
9) Electromagnetic Compatibility Requirements
The system should comply GJB151B-2013《JY Requirements and Measurements for Electromagnetic Emissions and Susceptibility of Equipment and Subsystems
GJB1389A-2005《系统电磁兼容性要求》相关要求，在预定的电磁环境中能正常工作。
2 成套性要求产品成套性要求如下。
3 外观质量
产品外观应整洁，表面应无凹痕、碰伤、裂缝、变形、毛刺等现象；涂镀层不应起泡、 堆积、龟裂和脱落；金属零件不应有锈蚀和其它机械损伤；紧固零件无松动。
4 检验报告
提供天线的出厂检验报告和测试报告。
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