Click on the "commercial products" link on the top of the Ten-Tec home page. The combiner/splitter is down the page from the receivers res0wsci at verizon.net --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.459 / Virus Database: 258 - Release Date: 2/25/2003