In essence the Avant X is a fully agile bank of 32 filters that can be distributed however the operator sees fit across four different inputs. These filters can be single channel with a width of 6MHz to individually isolate single multiplexes, or up to four channels wide, allowing to ingest up to four consecutive RF channels. The unit will filter out any non-programmed frequencies, and adjust all the desired RF channels to a desired output level between 30 and 55dBmV, so provides enough output power to work as a launch amplifier in an MDU or other commercial setting. The balanced level is maintained over time, thanks to it's AGC output section. In addition, individual channels or banks of filtered carriers can be frequency shifted to allow the ingestion of the same RF channels coming from different markets, or inject the OTA carriers in desired openings in the spectrum in an existing distribution (for instance, a CATV plant).The the ability to tailor the gain on each individual channel on each input so there is neither weak signal nor overload or even brick wall some channels on each input, change the output frequency and such, we've needed this since the first time more than one TV channel existed. Oh and yes, the Avant X will power the 12v preamps built into the Televes or another type, 12v over coax is pretty standard.
I don't know exactly what your situation is without connecting a spectrum analyzer to your antenna and viewing the signals. If it's similar to an adjacent channel issue I used to have then there's no good way to fix it. Let me try to explain with a couple of spectrum analyzer captures.I’m curious if my RF35 which is fading in and out could have bleed through from my super strong stations on RF34 and RF36. Is there some device/combiner that allows you to filter out a specific 6MHz band? I’ve seen a correlation: the higher the signal on 34 and 36, the lower the signal on 35. If so, my SNR with the Televes might be higher for that channel.