In this work, we transmit 15 modes 脳 184 wavelength channels 脳 $24.5 \\\,\\\mathrm{GBd}$ PDM-16-QAM signals, spanning the full C-band, over $1001 \\\,\\\mathrm{km}$ of 15-mode multi-mode fiber. The resulting net data rate of $273.6 \\\,\\\mathrm{Tb}/\\\mathrm{s}$...