Now, we support dual DVB-T modulator option for TVB593. Multiple DVB-T / 8VSB / QAM have consecutive channels only operating simultaneously. For example Ch.14,15 for 2 x DVB-T mode, or Ch N and Ch N+1. TVB593 can have 1~2 DVB-T mode, 1~3 8VSB mode and 1~4 QAM Annex B mode.