Y=Yttrium?
https://pubchem.ncbi.nlm.nih.gov/compound/yttrium#section=NLM-Curated-PubMed-Citations
https://ppjg.me/2009/01/31/silent-sound-spread-spectrum-ssss-the-all-digital-tv-broadcast-signal-connection/
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5,159,703.PN.&OS=PN/5,159,703&RS=PN/5,159,703
MIRROR Project Technology