sjg
aefd36c4b1
The threshold is in dB, and since the squelch fix that is the scale the spectrum axis and the S-meter are labelled in — so the control belongs on the plot, at the level it gates. A dashed line spans the spectrum at its threshold with a grip that reads it out, dragged like the bandwidth edges, green while the signal is above it and amber while it gates. Arrow keys move it a dB at a time for anyone not using a mouse. The audio row keeps a compact version: the dB, an indicator lit from the same meter the DSP compares against, Auto, and an enable toggle that no longer doubles as the level. The slider ran 0-100% over that dB range, which gave the operator a number with nothing on screen to relate it to, and zero meant "disabled", so turning the squelch off to listen threw the threshold away. Auto now says which level it picked. Two things the browser could only show once it was on the plot: the grip landed underneath the split control at the right edge, which swallowed its pointer, and dragging to the foot of the axis hid the line — and the grip with it — instead of pinning it where it could be dragged back. The fixture could not exercise any of this: /audio answered 404, which hides the audio row and the control inside it, and the status carried no filter block, which is what tells the client the rig has a squelch at all. Both now look like an SDR, and the spectrum test drives the line. Signed-off-by: Stan Grams <sjg@haxx.space>