Рет қаралды 29,994
A detailed review of the amateur multi-band radio station Radtel RT-470.
Completion, design and management. Comparison with Radtel RT-420.
Checking the output power, receiver sensitivity.
Adjacent channel selectivity measurement. Demonstration of reception and modulation. Demonstration of frequency capture mode. Scrambler mode demo. Checking the stock antenna. Identified shortcomings of the radio station.
The official Radtel store on AliExpress - aliclick.shop/r/c/1rljpafmxpt...
Overview of the Radtel RT-420 radio station - • Радиостанция Radtel RT...
We installed the regular program for this radio station. There is no range disclosure.
Video episodes:
00:00 Entry
03:12 Equipment
06:37 Construction
08:09 Management
10:50 Output power
12:10 Current consumption
14:49 Opening hours
15:54 Sensitivity
22:55 UK selectivity
25:37 Problem 275
26:11 Speech scrambler
26:50 Frequency capture
27:51 Speaker reception and volume
28:35 Modulation
28:47 Regular antenna
30:25 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/...
- Laboratory power supply Owon P4603 - hviva-telecom.org/14511/owon/p...
- Desktop multimeter Owon XDM3051 - viva-telecom.org/14499/owon/x...
- Sound level meter Victor 824 - viva-telecom.org/14502/victor...
- Reflectometer E621
- HP E4400B Signal Generator
Radio communication tutorial from Viva-Telecom - • Учебник по радиосвязи ...
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...
Photo reviews of our products: viva-telecom.org/fotos/new/
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