Those high priced splitter units ($50) include box and BNC connectors. If you do not want to build from stratch, try this for $14.20 : http://www.minicircuits.com/pdfs/PSC-2-1.pdf In Europe this is available at Funkamateur for 12 Euros: http://www.box73.de/catalog/ Look for Bauelemente - Sonstige Specialteile - second page Benny OH9NB