Certifications Certified Anton TETERIN is certified: GCP PCA, Google Cloud Platform Professional Cloud Architect CCNA, Cisco Certified Network Associate CompTIA Linux+ More badges on LinkedIn . Telecommunications: Finland: Finnish Communications Regulatory Authority (Ficora/Traficom) HAREC, Harmonized Amateur Radio Examination Certificate - 2nd category (2009--2013) as OH2FNZ HAREC, Harmonized Amateur Radio Examination Certificate - 1st category (2013--) as OG2K Long Range Certificate (2014--) Saudi Arabia: The Communications, Space and Technology Commission (CST/CITC) Radio Amateur Licence (2021--) as HZ1DZ More about personal radio amateur callsigns. Diving: PADI Open Water Diver Advanced Open Water Diver Yachting: Finland: Traficom Leisure Craft licence permit