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Hf Sdr Radio Utility Radio Winradio Excalibur Pro. Смотреть видео: Winradio Excalibur Pro Notch Filter Demo, Winradio WR G33DDC Excalibur Pro Notch Filter Demo, Winradio Demo Of Attenuation And Preamp Negating Noise Of HF, 14670 KHZ AM CHU Canada Time Signal With Winradio Excalibur.