雷达，就是英文Radar的音译，源于radio detection and ranging的缩写，意思是"无线电探测和测距"。 最早用于搜索目的的雷达，电磁波波长是23cm（后来改为22cm），英国人将其定义为L波段。 L，是英文“Long”的开头字母。 L波段，也就是长波波段。 后来，工程师们又搞出了波长为10cm的雷达，定义为S波段。 S，是“short”的开头字母。 没错，S波段就是短波，比长波“短一点”的波。 再后来，3cm波长的雷达出现了。 这种雷达专门用于火控（fire control）瞄准，所以被称为X波 …

F band may refer to: F band (NATO), a radio frequency band from 3 to 4 GHz; F band (waveguide), a millimetre wave band from 90 to 140 GHz

The waveguide F band is the range of radio frequencies from 90 GHz to 140 GHz in the electromagnetic spectrum, [1] [2] corresponding to the recommended frequency band of operation of WR8 waveguides. These frequencies are equivalent …

Get details on Microwave Frequency Bands - S Band, C Band, L Band, Ka Band, Ku Band and other frequency bands on everything RF.

The NATO F band is the obsolete designation given to the radio frequencies from 3,000 to 4,000 MHz (equivalent to wavelengths between 10 and 7.5 cm) during the cold war period. Since 1992, frequency allocations, allotment and assignments are in line with the NATO Joint Civil/Military Frequency Agreement (NJFA). [ 1 ]

E/F-Band (S-Band Radar) In the frequency band from 2 to 4 GHz the atmospheric attenuation is higher than in the D-band. Radar sets require a much higher pulse power to achieve long-ranges.

This page describes mm wave frequency bands such as Q band, U band, V band, E band, W band, F band, D band and G band. mm wave stands for millimeter wave. It falls in electromagnetic spectrum, refer what is mm wave for more.

F Band represents a frequency from 3 to 4 GHz and a wavelength from 1 dm to 7.5 cm. Learn more about the F Band on everything RF.

2021年3月3日 · If you’ve ever thought about bands that start with the letter F, you’re not alone. We know you may be wondering about it, so we compiled this list of artists whose names start with F.

2024年11月21日 · 要數福山芳樹的名曲，首選當然是他為人氣動畫「超時空要塞7」的主角巴沙拿幕後代唱、以樂隊「FIRE BOMBER」名義熱唱的一系列歌曲。 而為了紀念動畫播映30週年，日前剛推出了相隔12年的最新單曲『BURN! BURN!』。 其次，他以個人名義演唱的動畫商業搭配作品亦有膾炙人口的『真赤な誓い』（動畫「武裝鍊金」OP）以及歌迷都會一起跳舞的『キングゲイナー・オーバー!』（動畫「帝皇戰紀」OP）。