Asus My Cinema-U3000Hybrid - Manual (Page 19)

2-5 ASUS TV Tuner Product
The following step is for the ASUS TV Box with an internal antenna only.
6. Go to MCE > More Programs
> ASUS TV Setting. Select the
antenna you intend to use.
Click Apply.
• You may connect an external antenna/roof antenna to the U9000 Diversity
through an MCX-to-IEC adapter. An external antenna enhances the signal.