Standard gain horn antennas are used as calibration devices that measure the gain of other antennas.
These antennas are made up of a combination of a Waveguide to Coax Adapter and Standard Gain Horn with Waveguide Input. It is a kind of simple combination but with great care and attention to create an antenna with accurate and suitable specs.
FT-RF Standard gain horn antenna product series includes waveguide sizes WR28, WR42, WR51, WR62, WR75, WR90, WR112, WR137, WR159, WR187, WR229, WR284 and WR340, WR430, WR510, WR650, WR770, WR975, WR1150, WR1500, WR1800, WR2100, WR2300, with broadband waveguide horn antennas have frequency capabilities ranging from 320Mhz to 40 GHz depending on type and style. with the gain of 10dBi, 15dBi, 20dBi and 25dBi.
Standard Gain Horn Antenna Applications:
Apple於2025年推出全新MacBook Air，因為搭載強大的M4晶片，價錢起售價比前一代便宜1千元，成為不少人換筆電的考慮夯品。記者實測13吋M4版的MacBook Air 3周，從常見的實際生活場景分析優缺點，提供消費者選購參考。
記者先前的主力機是2018年Intel版本的銀灰色MacBook Air，與這次評測的是最受歡迎的天藍色版MacBook Air相比，心裡有兩個念頭，首先是MacBook Air也太耐用了，除了掉電快，依舊頭好壯壯，可以滿足日常所需，另一個想法是，終於等到從裡到外都大升級的Air。在這邊先說答案，如果你現在使用Intel版的MacBook，非常值得換，可以再戰6、7年。
以下為MacBook Air M4的5大優點
