The Mini does not use coax for any TV signals since it does not have any tuners. It has built-in MoCa, so use either ethernet or MoCa. MoCa uses frequencies not coherent to any TV signals, cable or OTA, so there is no interference between TV and Coax.
Series 2 (PLS, sold)
TiVo HD 1TB (157 HD Hrs, PLS, "652")
Roamio! Oh, wait, Its Juliet!
OTA! OTA! OTA!
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!