Lessee... Noise Reduction is provided by...
- The Signal Scrub cyberprogram.
- The RCC's Noise Reduction rating, which says it "is cumulative with other forms of Noise Reduction".
- compensating for noise on the fly with an RCC (Electronic Warfare + Logic [Data Processing], "cumulative with all other Noise reduction", works until the end of the Combat Turn).
- Datajack in Wireless mode.
So one
could read that as meaning that if it doesn't say it stacks, it only stacks with stuff that does say it stacks. Could, anyway.
Of course, now I'm curious about which augmentations you can have more than one of, and which of those you might want to.