The LoRa 915MHz antenna is an omnidirectional outdoor antenna that operates in the 902 to 928MHz ISM band and has a core frequency of 915MHz. The antenna is intended for use in industrial and environmental monitoring, mesh network applications, and LoRa and LPWA networks, among other things. This series omnidirectional antenna radiates consistently in the azimuth from 3 to 9dBi gain. This collinear design feature gives the highest performance, providing better coverage and hence longer range in the horizontal plane over 360 degrees, reducing the number of mesh nodes required. Because of the UV protection, this design is extremely robust and can be used in any weather condition, even in a tough environment. Lora 915Mhz antennas are simple to use and may be immediately connected to access points. One pair of packing contains a U-bolt and waterproof tape, allowing the antenna to be mounted on a wall or pole depending on the situation.
生活中心/藍詩孟報導
▲定量降水預報圖曝光降雨熱區。(圖/翻攝自氣象局)
近日台灣受到東北季風影響,迎風面地區連日降雨,尤其宜蘭、花蓮雨勢較大,出現局部超大豪雨,北台灣氣溫也明顯下降;氣象局預報員趙竑指出,明日桃園以北及東半部地區依然有雨,東北部的雨勢較大,週日過後到下週一(10/10),東北季風又會再度增強,氣溫會持續下滑,各地低溫下探到20-22度,要多留意。
氣象局指出,今天東北季風影響且水氣仍多,桃園以北及東半部降雨較為持續,停雨的空檔比較少,雨勢上,基隆北海岸、東半部及大台北山區容易有局部大雨或豪雨發生,尤其在宜蘭地區及花蓮山區有機會來到豪雨以上等級的降雨,要多注意坍方、落石及溪水暴漲,低窪地區請慎防淹水。
▲氣象局提醒大家,下週一氣溫恐會下滑。(圖/翻攝自報天氣)
至於新竹以南地區則維持多雲到晴,午後南部地區及中部山區有局部短暫陣雨,並有局部較大雨勢發生的機率;溫度方面,氣象局指出,今日桃園以北、宜花天氣稍涼,高溫約25至28度,其他地方高溫仍有29至32度,至於各地低溫約22至25度。
氣象局也表示,週日北台灣持續受到東北季風影響,迎風面降雨明顯,但水氣略微減少,不過東北部地區及新北市山區仍容易出現局部大雨;桃園及台東的降雨則相對局部、短暫,新竹以南地區一樣為多雲到晴,午後南部地區及中部山區有局部短暫陣雨。
氣象局提醒,雙十節當天,東北季風將增強並帶來乾涼的空氣,會一路持續影響至下週五(10/14),北部及東北部氣溫稍降,低溫有機會來到20度左右,其他地方低溫也略降;桃園以北及東半部地區仍有局部短暫雨,其他地區為多雲到晴,午後南部地區及其他山區有局部短暫陣雨。
引用自: https://www.setn.com/News.aspx?NewsID=1189824