Recently we had a SeaTel and DishHD to match each other problem. There’s a DishHD unit on a vessel on South China sea.
SEA TEL MODEL DAC-2202 default LNB is 9750/10600 type. DishHD default is 10750 Ku band dual pole LNB since DishHD channels are carried on 1, 3, 5, 9, 13, 17 of AsiaSat 4 at 122.2°E,
The type of correct LNB to receive 8PSK is Dual pole Vertical & Horizontal, L.O: 10750Mhz type.