Complex sentence: ISDB-T use UHF470MHz-770MHz, bandwidth 300 MHz, allocate 50 channels, namely ch.13-ch.62., each channel is 6 MHz bandwidth (actually 5.57 MHz effective bandwidth and 430 kHz guard band between channels).
Split into simpler sentences: ISDB-T uses UHF470MHz-770MHz, bandwidth 300 MHz.50 channels, namely ch.13-ch.62 are allocated. Each channel has a 6 MHz bandwidth (actually 5.57 MHz effective bandwidth and 430 kHz guard band between channels).