Open Boundary Quad-Ridged Horn Antenna 台彩超商合作推回饋祭 刮獎同時領優惠券
Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA) Log Periodic Antenna (LPDA)
影》英三兄弟139天划越太平洋創紀錄！募資逾2700萬助馬達加斯加
來自蘇格蘭愛丁堡的三兄弟傑米（Jamie）、伊旺（Ewan）與拉克蘭（Lachlan Maclean），於當地時間8月30日成功完成太平洋無支援划船挑戰。他們從祕魯出發，歷經近140天，橫渡超過9,000英里（約14,484公里），最終抵達澳洲東部城市凱恩斯（Cairns），以 139天5小時52分 創下新的世界紀錄。
根據《BBC》與《美聯社》報導，這趟史詩般航程打破了2014年由俄羅斯划手費奧多爾．科紐霍夫（Fyodor Konyukhov）以162天創下的紀錄。三兄弟是首支完成祕魯至澳洲「完整太平洋跨越」的無支援划行團隊。
Three Scottish brothers who embarked on a 9,000-mile row across the Pacific Ocean completed their journey Saturday, setting a new world record. Jamie, Ewan and Lachlan MacLean rowed into a Cairns, Australia marina, greeted by the strains of "Scotland the Brave" on bagpipes and a… pic.twitter.com/8HeMQmYvs5
— PBS News (@NewsHour) August 31, 2025
Three Scottish brothers said they set a record for rowing unsupported and non-stop across the Pacific Ocean, spending almost 140 days at sea pic.twitter.com/UrU7QmlNFm
— Reuters (@Reuters) August 30, 2025
挑戰過程中，三兄弟面臨多次險境。7月間的一場36小時暴風中，27歲的拉克蘭一度遭大浪捲入海中，幸好身體繫有安全繩，最終被哥哥伊旺及時拉回船上。之後，一場氣旋迫使他們放棄原本計劃登陸布里斯本，改道繞行新喀里多尼亞群島，讓航程延誤數日。
本篇文章引用自此: https://www.chinatimes.com/realtimenews/20250831003027-260408
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.