高频(HF)雷达利用电离层反射的电磁波来探测地平线以外的目标。甚高频(VHF)和特高频(UHF)频段用于超长距离预警雷达(EWR)。由于非常大的波长和非常远距离测量的灵敏度要求,在这种雷达系统中需要大孔径。 L-波段雷达主要是陆基和舰载系统,用于远程军事和空中交通管制搜索行动。大多数地面和舰载中距离雷达在S...
A VHF and UHF frequency range interconnected digital analog converter comprises a digital repeat station, a simulation repeat station and an interconnection control circuit. The VHF and UHF frequency range interconnected digital analog converter is characterized in that reception and emission voice signals...
Frequency dependence of acoustic properties of aqueous glucose solutions in the VHF/UHF range The bioultrasonic spectroscopy system was employed for measurements of velocity and attenuation coefficient of glucose solutions in the VHF/UHF range. The ... N Akashi,JI Kushibiki,F Dunn - 《Journal of ...
Frequency Bountiful|Sdr Multiple Frequency|Frequency Range: 0.1-1300MHz,Cover a broad spectrum from 0.1MHz to 1300MHz, ideal for diverse HF/VHF/UHF testing. Power Source: USB or Internal Li-ion,Dual power options with USB and internal Li-ion, ensuring reliable operation. ...
China wide frequency coverage vhf uhf dual band auto mobile dmr radio FT-8900R, You can get more details about China wide frequency coverage vhf uhf dual band auto mobile dmr radio FT-8900R from mobile site on Alibaba.com
Baofeng F8+ Walkie Talkie 10 km VHF UHF Dual Band Handheld $17.00 - $17.50 Min. order: 1 piece Quansheng UV-K6 UVK6 5W Two Way Radio UV-K58 UVK58 Full Band Type-C Charging UV-K5(8) Walkie Talkie Long Range $13.90 - $16.90 Min. order: 10 pieces Manufacture BF Factory direct uv...
Automatic VHF/UHF frequency range modulation identification methodThe invention discloses an automatic VHF/UHF frequency range modulation identification method. The method comprises steps that, 1, data is introduced in order; 2, time domain abrupt detection the on introduced data is carried out; 3, ...
HF, VHF, UHF Systems and Technology. Focuses on the application of high-frequency (HF), very-high-frequency (VHF) and ultrahigh-frequency (UHF) bands. Operation of broadcasting and over-the-h... Raab,Frederick,H.,... - 《IEEE Transactions on Microwave Theory & Techniques》 被引量: 0发...
Frequency Range COVER : 125MHz~525MHz SW102UV Insertion Loss< 0.15dB(VHF) , < 0.25dB(UHF) Temperature 0℃~60℃ Frequency counter : SW102UV only ( TX input must be minimum 0.5W + - 0.5%) Battery Level Display : Yes Battery Build-in :3.7V Li-ion Battery ...
1 * Mini600 HF VHF UHF Antenna Analyzer 0.1-600MHz1 * Bag of Accessories Material Frequency range metal 0.1-600MHz Packaging & Shipping Package: Normally we use the standard exporting packaging. We also can according to clients' request . Shipping : 1. By Couriers: DHL, UPS, FEDEX, TNT...