VHF radio communication is vital for safety and operational communication on vessels. Antenna testing and calibration are essential services that ensure the radio system operates efficiently. Service includes checking antenna signal strength, inspecting connections, and recalibrating the antenna for optimal reception. Proper calibration helps improve the range of communication, reduces transmission issues, and ensures clear communication with other vessels or shore stations. Regular antenna checks ensure compliance with SOLAS regulations and maintain operational efficiency, providing reliable communication during normal and emergency situations.