The following arrangements have been made for amateur stations regulated by the FCC to communicate with amateur stations located in other countries. Missions use very high frequency (VHF) or ultrahigh frequency (UHF) radio networks for communications between mission facilities, residences of mission personnel, official vehicles, and, in the case of high frequency (HF) radios, other posts. 111 of the Commission's Rules, 47 C. Having only these modes of communications creates a higher risk of interception, network congestion or simply. Section 97. The market is also. RFS is a global designer of cable, antenna and tower systems plus active and passive RF conditioning modules, providing total-package solutions for wireless infrastructure.