Combine Virtually Multible Bands on a WideBand SDR?

[Username]

So lets juse some (legal) example. HF Radio Bands are for example:
11.600.000 - 12.100.000
13.570.000 - 13.870.000
15.100.000 - 15.800.000

I am not Interested in the other stuff. When I zoom out to see it the are (to) small to see the single Band.
So is there any Plugin or maybe something for GNU Radio who allow me to see just the Freq Bands I want to see?
In the Example only the Radio?
Thanks

[rtlsdrblog]

They'd have to all be in the same bandwidth.

SDR-Consolve V3 has this multi window feature. But to cover all those bands at once you'd need a wider band SDR, or maybe multiple RTL-SDRs.

[Username]

Now I have an HackRF from China.
I will use SDR# if possible.