Radtel RT-420 radio station. Many promises, few reality 

A detailed review of the amateur multi-band radio station Radtel RT-420 (ABBREE AR-730).
Completion, design and management.
Checking the output power, receiver sensitivity. Demonstration of reception and modulation. Demonstration of frequency capture mode. Scrambler mode demo. Checking the Bluetooth connection. Checking the stock antenna. Identified shortcomings of the radio station.
The official Radtel store on AliExpress - aliclick.shop/r/c/1rljp72ovo5...
Video episodes:
00:00 Entry
01:00 Equipment
04:17 Construction
06:07 Management
12:13 Output power
16:00 Frequency capture
17:46 Bluetooth
20:37 Sensitivity
23:45 Reception
23:55 Modulation
24:07 Speech scrambler
25:31 Standard antenna
26:49 Conclusions
Equipment used in the video:
- Antenna analyzer RigExpert AA-600 - viva-telecom.org/11030/rigexp...
- A set of RF connectors Anli YC-30 - viva-telecom.org/6969/anli/yc...
- SkyRC iMax B6 mini battery analyzer - viva-telecom.org/15839/skyrc/...
- Reflectometer E621
- HP E4400B Signal Generator
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DMR digital training video - • Протокол DMR. Обучающе...
Rating of the best manufacturers of radio stations - viva-telecom.org/articles/bes...
The results of testing the parameters of all radio stations in the Viva-Telecom laboratory: viva-telecom.org/articles/tes...
The results of testing the operation of all radio stations in urban conditions from Viva-Telecom: viva-telecom.org/articles/tes...
Adjacent channel sensitivity and selectivity video - • Определение чувствител...
A video about measuring the SWR of portable antennas - • Измерение графика КСВ ...
dBm to µV sensitivity conversion calculator - viva-telecom.org/articles/dbm...
Radio station operating time calculator - viva-telecom.org/articles/bat...
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