Zohar Zisapel

The Zisapel brothers had expanded their focus beyond miniature modems. While RAD would go on to release its first fiber optic product in 1986 and its first multiplexer one year later, the Zisapels were developing new ideas for communications products for enterprise applications - adapters for servers and security appliances; integrated network management solutions; video conferencing infrastructure and development tools; wireless devices, and other industry niches. But rather than follow the traditional industry paradigm by having their one existing company branch out into new areas beyond its original mandate, the Zisapels decided to found a new company that would focus on each specific industry niche they targeted. This approach grew into the RAD Group, a family of independent companies that develop, manufacture and market solutions for diverse segments of the networking and telecommunications industries.

What was unique about the Zisapels' business philosophy was that each company would operate independently, without a holding company, but all of the companies would be guided by them under a collective strategic umbrella. Companies may cooperate in the development of their solutions, engage in joint marketing activities and benefit from a common management structure. This decentralized business philosophy was designed to maximize the advantages inherent in smaller business units, such as flexibility, entrepreneurial spirit and management focus. As a result, since 1984, when the RAD Group came into being, it has spawned more than 185 companies, 8 IPOs and 19 mergers and acquisitions.

In 1981 Zohar Zisapel resigned from his position at the Ministry of Defense and, together with Yehuda, founded RAD Data Communications Ltd. Operating from small, cramped quarters in the back of Bynet’s offices, Zohar oversaw the development of RAD’s first product, a miniature modem that would revolutionize the industry. The modems that were then on the market were the size of pizza boxes. RAD’s modem, however, could fit into one’s hand, and, remarkably, it did not require an independent power source, having been designed to operate instead by utilizing power flowing over the telephone line. One version of this modem, SRM-3, would be recognized by the Guinness Book of Records as the smallest ever manufactured. Within two years of its founding, RAD had become a profitable international manufacturer of access solutions for data communications and telecommunications applications. In 1987 the company had reached $10 million in annual sales. RAD won the Israel Export Prize in 1993, the year in which its sales first exceeded $50 million. It surpassed the $100 million mark in global sales in 1996.

Following his undergraduate education at the Technion, Zisapel completed his compulsory service in the Israel Defense Forces (IDF), after which he was hired by the Electronic Research Department of the Ministry of Defense in Tel Aviv, ultimately serving as its head. He received the Israel Defense Prize in 1979 for his work.

In the mid 1970s, Yehuda Zisapel, Zohar's elder brother, founded a small private company that marketed data communications products. The data communications products Bynet distributed in Israel in the later half of the 1970s were all manufactured abroad.

Zohar Zisapel (born February 15, 1949; Hebrew: זהר זיסאפל), is an Israeli entrepreneur. He co-founded the RAD Group of companies with his brother, Yehuda.