南韓大邱山區今（6）日下午突然發生森林大火，南韓當局出動5架直升機滅火後，其中1架不幸墜毀，機上唯一1名73歲飛行員罹難。

綜合韓聯社、《京鄉新聞》、News1通訊社報導，大邱消防安全總部表示，當地時間今日下午3時12分（台灣時間6日下午2時12分）左右，大邱北區西邊洞一座山上突然發生森林火災，林業部門隨即出動5架直升機滅火。

不料下午3時41分，其中一架直升機在距離野火地點約100公尺處墜毀，消防人員表示，推測機上唯一一名飛行員不幸殉職。

來自: https://www.chinatimes.com/realtimenews/20250406002156-260408
The Log Periodic Antenna  as known as LPDA  is a wideband directional antenna that provides gain and directivity combined over a wide band of frequencies.
Both Log-Periodic Antennas and Yagi antennas are high gain directional antennas. The main difference between these antennas is that Log-Periodic Antennas support wider frequency bandwidths and are physically much larger than Yagi antennas.
The log-periodic dipole array typical VSWR is 2:1 and operates over a much wider bandwidth and will have a lower gain for an equivalent number of elements.
With this level of performance, it is ideal for many applications, although a log-periodic antenna will be much larger than a Yagi of an equivalent gain.