UHF -Ultra High Frequency中文是:特高频。分米波段UHF波段则是指频率为300~3000MHz的特高频无线电波。VHF包含1-12频道,UHF包含13-68频道,我国试运行频率范围920MHz～925MHz ,840-845MHz.常用于广播电视领域 猜您喜欢 根据您的浏览,为您推...
HF(Very High Frequency ),甚高频, 是指频带由30 MHz 到 300 MHz的无线电电波。 UHF(Ultra High Frequency),超高频,是指频带在300-3000MHz之间的无线电电波。 这两个无线电波段广泛用于电视、调频广播、移动电话、传呼机、股票信息机、微波通讯和雷达等。 我们平时接触的无线麦克风就分为UHF无线麦克风和VHF无线...
The VHF and UHF frequency range interconnected digital analog converter is characterized in that reception and emission voice signals, a carrier sense signal, a PTT input signal and a grounding wire are led out from the development interfaces of the digital and simulation repeat stations and ...
VHF频带范围为30～300MHz,无线电波波长为10～1m,因此VHF又称为米波频带;UHF频带范围为300～3000MHz,无线电波长为1m～1dm,因此UHF又称为分米波频带。在无线电通信中,VHF是指甚高频段无线电波,其英文全称是VeryHighFrequency,中文简称为甚高频;UHF是指特高频段无线电波,其英文全称是UltraHighFrequency,中文简称为特高频。
《GB/T 32401-2015 VHF/UHF频段无线电监测接收机技术要求及测试方法》是由中国国家标准化管理委员会发布的一项国家标准,旨在规定VHF(甚高频)和UHF(特高频)频段内用于无线电监测的接收机的技术要求以及相应的测试方法。该标准适用于设计、生产和验收这些特定频率范围内工作的无线电监测设备。
Frequency: TX: VHF:144-148/ UHF: 420-450MHz Product Name Vehicle Mouted Radio Color Black Packaging and delivery Selling Units: Single item Single package size: 17.5X4.5X14.5 cm Single gross weight: 2.500 kg Show more Lead time Samples ...
VHF+UHF Frequency 47-774HMz FM Frequency 88-108HMz Gain 20 dB Stop Band Attenuation 20dB Application Antenna /TV Housing material sheet metal Power Supply 12V/60mA Packing White Box OEM Gift Box Packaging and delivery Selling Units: Single item Single package size: 10X8X5 cm Single gross wei...
GB/T 32401-2015VHF/UHF频段无线电监测接收机技术要求及测试方法.pdf,ICS 33.060 M 36 GB 中华人民共和 国 国彖标淮 GB/T 32401—2015 VHF/UHF频段无线电监测接收机 技术要求及测试方法 Technical requirements and measurement methods for VHF/UHF frequency band radio m
VHF transceiver UHF transceiver Simple operation for instant communication The IC-F3002 series is so easy to use there's no special training required. The few knobs and buttons are generously sized for easy op-eration and are designed to provide non-slip, positive action – even while wearing ...
Generally,UHFradios operate in the400-512 MHzfrequency band. Within the communication bands that we’re talking about, UHF is roughly three times higher in frequency than VHF. Wavelength is the distance between peaks on a wave, and wavelength is inversely proportional to the frequency. So, VHF...