Tivo Raomio OTA and QAM modulator?

Hello, I am new to the Tivo Community but not to Tivo itself.

I have a new Tivo Roamio OTA and I want to us a QAM modulator I have (Channel plus 5415HD modulator) with The Roamio OTA.
I do not need any guide with this and only want to be able to set up a manual recording of the source (Qam modulator) when I need to.
Will this work?
I searched thru all of the threads about the Roamio OTA and it seems it will?

What I want to do is use a rf combiner, one side antenna, one side from the...

Tivo Raomio OTA and QAM modulator?

Tivo Raomio OTA and QAM modulator?