Setting SSB filter BW with / shifts high pass below carrier - why?
Usually I change RX filter bw like this: Press "g" to jump to the frequency field, then type in "/4k" to listen to some wider SSB stations.
This seems to be relative to the center frequency of the filter, not to the tuned frequency. So the result is a filter that has the highpass at -650Hz and the lowpass at 3350. What I expected at first was a filter that starts at 0Hz and ends at 4k.
I know if someone tries to narrow in on a CW signal, things would be different.
So my question is: Can I change this behavior somehow? At least there is no good reason to let the filter flip over to the other sideband when increasing bandwidth.
I thing this might be on purpose but I just don't get the reason :-)