nansai hu wrote:
Yes,this seems work.but the intention is get a radio.So, I use a USRP source instead FFT sink and observe in Spectrum Analyzer and it still doesn't work. I think the only different is I use a usrp as CF to put baseband FM signal to RF because Spectrum Analyzer quite like FFT sink.
Whats the resolution bandwidth on your spectrum analyzer set to? Perhaps its not set fine/small enough?
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