Phase III or Phase II? There's a difference
As PSB noted, Phase III has the internall switch and the other 2 LNB's (110 & 119) are weird ones. They don't cover the whole DBS spectrum).
But a Phase II (the older model) does work a little bit for FTA. I just picked up one of these. The switch is external and the LNB's are removable. I put it up on the roof and aimed at 91 & 110 and was able to put a KU LNB in the middle (101 slot...I have a KU LNB that has the same shape as DBS LNB's). Ran 3 wires to a switch and now I have
110-Gol TV
91-radio stations
101-now with the dish smaller, alot of the signals are very low. RTPI is 30, LLBN is 32, but 3Angels (normally 99) is about 50 and KUIL Fox (normally 99) is 75.