Real-Time Unrepeatered C-Band Transmission of 30.5 Tb/s over 276.4 km and 29.45 Tb/s over 292.5 km

We present record unrepeatered experiments with 61 real-time 32-QAM channels at 500 Gb/s over 276.4 km, or with hybrid 16/32 QAM modulation over 292.5 km, applying a high-power booster and third-order Raman amplification.