did rvr elettonica in italy taken over technosystem Srl?

Answer 1

Yes, in the year 2006 as per below notice (from RVR website)

Created over 27 years ago, Technosystem Digital Network S.p.A (TDN) has since been designing and manufacturing systems and equipment for television and radio broadcasting networks world wide. TDN products have satisfied more than 200 customers, spread over 45 countries.
In 2006 Technosystem became part of the RVR Group and was transformed into Technosystem S.r.l.