Retevis RA685. Радиостанция с type C и с функцией захвата частоты.

Review of the amateur radio station Retevis RA685 (ABBREE AR-F5) with a type C connector for charging and with a frequency capture function. Complete set, design, control, measurement of consumption currents, calculation of operating time, measurement of output power, sensitivity, selectivity in the adjacent channel. Demonstration of reception and transmission, measuring the volume of the speaker, plotting the SWR of a standard antenna, advantages and disadvantages. The official Retevis store on AliExpress - https://aliclick.shop/r/c/1r12n5ewjag... Equipment used in the video: Antenna analyzer RigExpert AA-1000 - https://viva-telecom.org/11031/rigexp... Laboratory power supply Owon P4603 - https://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... A set of RF connectors Anli YC-30 - https://viva-telecom.org/6969/anli/yc... SkyRC iMax B6 mini battery analyzer - https://viva-telecom.org/15839/skyrc/... Reflectometer E621 HP E4400B Signal Generator 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...