Here in this video is figured out very simple method how to easy measure filters with RTL-SDR USB receiver and RF noise generator.

RTL-SDR receiver with RX on shortwave bands (+HF):
[ Ссылка ]

RF wideband noise generator 0.1M-2000MHz:
[ Ссылка ]

Relay Toggle Circuit Using a 555 Timer:
[ Ссылка ]

SDR SHARP software:
[ Ссылка ]

SDR SHARP Plugins:
[ Ссылка ]

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