Hi Clark, which version of GNU Radio are you using, and is the folder from which you're taking these examples from the same version?
Thank you for your answer! Marcus On 07.04.21 23:35, Clark Chiu wrote: > Hello, > > I am new to GNU Radio and I am trying to understand more by checking the > fm_rx and fm_tx > examples in the gnuradio/gr-analog/examples folder. I open these two grc > files from the > GNU Radio Companion. Out of box, there is an error message in Polyphase > Arbitrary > Resampler saying Expression None is invalid for type `real_vector` of > parameter `Taps`. I > tried to google around the forum and the internet but I couldn't find > anything useful to > fix this. I doubt it has something to do with the last parameter > "window.WIN_KAISER" but I > am not sure. > > Could anyone give me some pointers? > Thank you in advance. > > > Best regards, > Clark
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