Ngā kaupapa kua tūtohitia
- Telecommunication
- Standards 245 ngā hua
- Measurement 62 ngā hua
- Electromagnetic compatibility 55 ngā hua
- Radio 52 ngā hua
- Electric apparatus and appliances 50 ngā hua
- Interference 49 ngā hua
- Equipment and supplies 46 ngā hua
- Testing 38 ngā hua
- Information technology 37 ngā hua
- Telecommunication systems 37 ngā hua
- Radio frequency 32 ngā hua
- Computer network protocols 30 ngā hua
- Computer networks 22 ngā hua
- OSI (Computer network standard) 17 ngā hua
- Telecommunication cables 14 ngā hua
- Electrical engineering 10 ngā hua
- Safety measures 10 ngā hua
- Telecommunication wiring 10 ngā hua
- Television 10 ngā hua
- Industrial safety 9 ngā hua
- Radio beacons 9 ngā hua
- Data transmission systems 8 ngā hua
- Law and legislation 8 ngā hua
- Low voltage systems 8 ngā hua
- Radiotelephone 8 ngā hua
- Receivers and reception 8 ngā hua
- Electromagnetic interference 7 ngā hua
- Mobile radio stations 7 ngā hua
- Motor vehicles 7 ngā hua
- Harmonics (Electric waves) 6 ngā hua
- Protection 6 ngā hua
- Radio equipment 6 ngā hua
- Acoustical engineering 5 ngā hua
- Commercial buildings 5 ngā hua
- Digital communications 5 ngā hua
- Electric power systems 5 ngā hua
- Electronic apparatus and appliances 5 ngā hua
- Electronic data interchange 5 ngā hua
- Electronic mail messages 5 ngā hua
- Electronic mail systems 5 ngā hua
- Marine radio stations 5 ngā hua
- Message processing 5 ngā hua
- Radio noise 5 ngā hua
- Radio on boats 5 ngā hua
- Shortwave radio 5 ngā hua
- Citizens band radio 4 ngā hua
- Computer interfaces 4 ngā hua
- Construction industry 4 ngā hua
- Distress signals 4 ngā hua more…