Retevis RT3S. Цифровая двухдиапазонная радиостанция с прямым вводом частоты и GPS. Большой обзор

Detailed review of DMR digital radio station Retevis RT3S with direct frequency input, call recording and GPS receiver. Completion, design and management. Software Review. Checking the output power, receiver sensitivity. Adjacent channel selectivity measurement. Measuring consumption currents and determining the operating time. Demonstration of reception and modulation. Transmission of GPS coordinates. Demo mode for recording conversations. Checking the stock antenna. Identified disadvantages and advantages of the radio station. The official Retevis store on AliExpress for this radio model - https://aliclick.shop/r/c/1rnr81p93a9... Video episodes: 00:00 Entry 01:50 Equipment 04:08 Construction 06:18 Management 16:00 Software 21:46 Output power 22:44 GPS position receiver 25:05 Consumption currents 30:17 Opening hours 31:24 Sensitivity 32:58 UK selectivity 34:57 Speaker reception and volume 36:52 Modulation 37:12 Recording of negotiations 39:33 Standard antenna 40:45 Conclusions Equipment used in the video: A set of RF connectors Anli YC-30 - https://viva-telecom.org/6969/anli/yc... Laboratory power supply Owon P4603 - hhttps://viva-telecom.org/14511/owon/p... Desktop multimeter Owon XDM3051 - https://viva-telecom.org/14499/owon/x... Sound level meter Victor 824 - https://viva-telecom.org/14502/victor... Reflectometer E621 HP E4400B Signal Generator TinySA Ultra Spectrum Analyzer Deepelec DeepVNA 101 vector analyzer - https://aliclick.shop/r/c/1rnic6hmdx6... Radio communication tutorial from Viva-Telecom -    • Учебник по радиосвязи от Вива-Телеком. Час...   DMR digital training video -    • Протокол DMR. Обучающее видео. Преимуществ...   DMR encryption -    • Шифрование в DMR. Обучающее видео от Вива-...   Rating of the best manufacturers of radio stations - https://viva-telecom.org/articles/bes... The results of testing the parameters of all radio stations in the Viva-Telecom laboratory: https://viva-telecom.org/articles/tes... The results of testing the operation of all radio stations in urban conditions from Viva-Telecom: https://viva-telecom.org/articles/tes... Adjacent channel sensitivity and selectivity video -    • Определение чувствительности и избирательн...   A video about measuring the SWR of portable antennas -    • Измерение графика КСВ портативной антенны....   dBm to µV sensitivity conversion calculator - https://viva-telecom.org/articles/dbm... Radio station operating time calculator - https://viva-telecom.org/articles/bat... Photo reviews of our products: https://viva-telecom.org/fotos/new/ About Viva-Telecom: https://viva-telecom.org/company/ Our news: https://viva-telecom.org/news/ Our VKontakte group: http://vk.com/viva_telecom #retevis