Mod version:
-YABBA: 1.1.2.53
-FTB Ultimate Reloaded: 1.10.0

Issue:
There is no output when connected to a comparator, event though the mod page on CurseForge talks about redstone output. There is no redstone upgrade either. No idea if it something that was changed by FTB when adding the mod.

Found out some features were disabled by FTB through CrraftTweaker2, including redstone upgrades.