(Manufactory)起站终站四轮乐队的天线

3.Electrical Characteristics 3.1 GSM Antenna Form 1No.ItemSpecifications1Frequency(MHz)880 960 MHz/1710 1990 MHz2V.S.W.R(in BW)≤2.0:13Gain(Zenith)2 dBi4PolarizationVertical5Impedance50 Ω 3.2 Mechanical Form 2No.ItemSpecification1CableRG174 3m/5m or others2ConnectorFakra3Plastic HousingBlack4MountingMagnet 5.Environmental Specifications Post Environmental Tolerance (Refer to the form 1 2 ) Condition:Temperature range 25±3°C Relative Humidity range 55 75%RH Operating Temperature range -40°C +85°C Storage Temperature range -40°C +100°C 5.1 Moisture Proof The device should satisfy the electrical characteristics specified in form 1 2 after exposed to the temperature 40±2°Cand the relative humidity 90 95% RH for 96 hours and 1 2 hours recovery time under normal condition. 5.2 Vibration Resist The device should satisfy the electrical characteristics specified in form 1 2 after applied to the vibration of 10 to 55Hz with amplitude of 1.5mm for 2 hours each in X , Y and Z directions. 5.3 Drop Shock The device should satisfy the electrical characteristics specified in form 1 2 after dropping onto the hard wooden board from the height of 30cm for 3 times each facet of the 3 dimensions of the device. 5.4 High Temperature Endurance The device should satisfy the electrical characteristics specified in form 1 2 after exposed to temperature 80±5°Cfor 24±2 hours and 1 2 hours recovery time under normal temperature. 5.5 Low Temperature Endurance The device should also satisfy the electrical characteristics specified in form 1 2 after exposed to the temperature -40°C±5°Cfor 24±2 hours and to 2 hours recovery time under normal temperature. 5.6 Temperature Cycle Test The device should also satisfy the electrical characteristics specified in form 1 2 after exposed to the low temperature -25°C and high temperature +85°C for 30±2 min each by 5 cycles and 1 to 2 hours recovery time under normal temperature. 6.Weatherproof Put the antennas in 1m deep water for 12h, and find 100% waterproof.