Of course! The FAQ is the first thing I look at if I have a problem, then the BBS search function. This is how I found this thread. The problem is, that the antenna goes up and down with the player, irrespective of tuner on or off. I'm 99.9% sure TA is off (as there's only a "TA ON" menu item and no "TA OFF" menu item and there's no TA on the radio display anywhere), but I'll triple check.
I'm also running 2.0, and Hijack 394, so firmware should not be the issue either. That's why I posted in this thread, to find out if maybe more people with the PCATS tuner had the problem and it may be related to something that's different in this vs. the original tuner.