Polish Radio Communications Integrated with Northrop Battle Command System Our Bureau 1384 Transbit R-460A Radio Relay High-Capacity Line-Of-Sight (HCLOS) radio communications system. Northrop Grumman and Polish firm Transbit Sp. z o.o. have completed a joint effort to integrate and test the Transbit R-460A Radio Relay High-Capacity Line-Of-Sight (HCLOS) radio communications system with the Integrated Air and Missile Defense Battle Command System (IBCS). The R-460A radio is the first non-U.S. radio communications system and the initial Polish system to be integrated with IBCS. Poland is the first international partner nation to acquire IBCS as the centerpiece of the country’s air and missile defense modernization efforts.