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From: | Fernando |
Subject: | [Discuss-gnuradio] WBFM modulation/demodulation high frequencies highly attenuated |
Date: | Wed, 26 Apr 2017 20:02:29 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.6.0 |
I'm modulating/demodulating a wide band FM signal and I observe that high frequencies are highly attenuated. This is the diagram
And this is the spectrum High frequencies are attenuated more than 40dB over low frequencies. It seems to happen for frequencies above 20Khz. Changing max deviation in WBFM Transmit has no effect. What am I doing wrong?
regards
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