QO10

QO10 is a call sign assigned to a radio amateur in Germany. Radio amateurs, also known as ham radio operators, are individuals who use radio frequencies for non-commercial purposes, such as communication, experimentation, and self-training in technical and communication subjects. The call sign itself indicates the operator's country of origin and their specific license class. The "QO" prefix is typically associated with German amateur radio licenses. The "10" is a unique suffix assigned to that specific operator. The International Telecommunication Union (ITU) allocates radio frequency bands for amateur radio use worldwide. Operators like QO10 use these frequencies to communicate with other ham radio enthusiasts globally, often engaging in conversations, exchanging information, or participating in emergency communications when needed. The hobby requires obtaining a license, which involves passing technical and regulatory exams.