No takers?
Excuse me for being rude but I think I need to thump a few heads.
For you geniuses out there. Noise is any undesired component and it applies to all electronics.....period. Signal to noise is only prevalent in receivers because it it is so critical to it's performance. I have NEWS!! It is crucial in any system you wish to put together. What you want to bet, I can take your printer design, and introduce a small frequency at numerous locations and F the Mo...up! Get it?
You don't have noise as such in a transmitter, unless it's incredibly poorly 'designed', which in your case appears to be so. Design it properly, and it's not a concern at all, you're talking high signal levels where any noise is much too small to be significant.