It's all about the Software

You may find that your band plans might have to get awfully fine grained. Los Angeles is very different from San Francisco at least for ham bands, for example. We also have an annoying habit of allocating chunks of spectrum to several different services not all with the same technical specifications...

https://www.sdr-radio.com/band-plan
{^_^}

What makes you even begin to think the signal you are tuning in is as accurate as 16 parts per billion? Is it known to be locked to GPS? If the ppm error is fed as a correction to the RSP2, does it accept that small a correction or is it only integer ppm? {o.o} Just wondering? If your RSP2 is not GP...

What sample rate range might be the source rate to the resampler? If it's lower than 48 ksps then that lower rate defines the data bandwidth.
{o.o}

When I read what you say you seem to agree with me and then suddenly say something the exact opposite that sounds like "But SDRC should fix it anyway." There are reasons to have the DC present on output sometimes and other times have it filtered. There is a filter selection. What more do y...

For best purity of the output for future processing the data rate is not something a user can manipulate easily if at all. It is not likely a power of two multiple of 3 kHz. If it is fed through a resampler there will be a reduction in signal quality; but, programs fed the signal may work just fine....

Note that in SDRC zoom is ALWAYS around the center frequency of the display. Personally I consider that a bug. Simon does not. This is his toy. So I accept it.
{o.o}

You are simply and comprehensively wrong. It may not be what is "right" as you see it. It may be confusing as you see it. It is displaying precisely what comes out of the demodulator. If turning on the 25 Hz HPF does not cure it perhaps the audio feed to the O'Scope could be changed approp...

It is showing the AM modulation. It is always in the form of a DC term, 1.0 for convenience) plus the audio at levels from 0 to +/- 1.0 for the peak signal. If there is no high pass filter going into Simon's display, the DC term coming out is the DC term going in as part of the modulation process. {...

The feature that AM brings to this picture is that the DC bias will be proportional to the AM signal level as modified by the AGC and it's action. With sine wave signals the 100% modulated AM signal is a sine wave rest its low side on the zero volts line and its maximum exactly twice it's average le...