INVESTOR MULLS KAPPA<KPA>-RADIATION<RADS> MERGER Michael Krupp, a Golden, Colo., businessman and major shareholder of Kappa Networks Inc, said he and Kappa's management are considering seeking a merger between Kappa and Radiation Systems Inc. In a filing with the Securities and Exchange Commission, Krupp said companies he controls and Kappa acquired a combined 292,000 Radiation System shares, or 5.25 pct of the total. Krupp, who has a 24.4 pct stake in Kappa, said he and Kappa management believe a Kappa-Radiation Systems combination would be good for both companies. But no decision has been made on whether or how to proceed with a merger attempt, he added.