1) spurts at 24MHz x n are so conspicuous compared to those observed with RSP1A and RSP2.
Also, noise floor of RSPduo seems quite noisy. Is there any reason you can think of, or is this totally dependent on the RSPduo hardware?
2) As the default, the BC/FM and DAB are enabled although those button ares not inverted. By clicking them twice respectively, the filters will be removed.
Yas - JA8SCD Tokyo
1) - I think you should contact Tech Support regarding the spurious output and higher noise floor of the RSPduo. I also get a slightly higher noise floor with the RSPduo.
2) - BC/FM and DAB buttons: At startup, the buttons are (should be) grey or un-selected, and the filters are disabled. Clicking on a filter button should turn the button blue and enable the filter. I've just checked that operation here and it all seems OK. I'll do some further checking and see if I can get the same error you are getting.