Spectrum Data Not Changing for HackRF One

[curtisklarsen]

I have a Hackrf One with firmware updated to use hackrf_sweep. I am running this command to launch it and look at channel 165 on Wi-FI:

./retrogram-soapysdr --dev 0 --rate 1.8e6 --freq 5825e6 --step 1e5^C

Then I download a large file on the same channel - but the spectrum data does not change at all. If I do this with other graphical programs like gqrx, or QspectrumaAnalyzer I see a significant change in the spectrum view. What am I doing wrong?