As far as RX02 formatted 8-inch floppies go, I have some original DEC RT-11 V05.01 RX02 format distribution floppies which I managed to dump to disk images a few years ago. I forget exactly how I did it now.
It was either with a real DEC RX02 drive and an M8029 RXV21 controller in a Q-Bus PDP-11 system, or with an Scientific Micro Systems SMS1000 which has an RX02 compatible disk controller on its main "foundation module" for a standard TM848-2E floppy drive. Then I booted 2.11BSD on one of the two PDP-11 systems and simply used "dd" to dump all of the floppy sectors to image files, then used ftp to get the image files out to a modern system. Fortunately I didn't have to deal with any bad sectors. Not sure how that would have complicated things if I did. Next to use those floppy image files with SIMH I had to reshuffle the sector order into new image files copies. The RX02 driver in software does a 2:1 sector interleave, a 6 sector per track skew, and starts at track 1 and wraps around to track 0, which had to be undone. (See the "raxfactr" routine in the 2.11BSC source file src/sys/pdpuba/rx.c)
