The RECEIVE card had grown tall after adding WNB and the SmartSDR v4 DSP rows
(NRL/NRS/NRF/ANFL/RNN/ANFT). Keep the everyday NB/NR/ANF visible and tuck the
supplementary controls behind a collapsible 'DSP' button. The button badges +
highlights when any hidden control is ON so an active filter is never hidden,
and its open/closed state persists in localStorage (opslog.flexDspOpen).
rouggy
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