Tag: ITU
- How Amateur Radio Call Signs Are Built: Prefix, Type Letter, Zone Number, and Suffix 2026-10-18 · Licensing & Regulations
BI4OAE looks random at first glance, but every segment carries meaning. Here is the four-part structure of Chinese call signs, how it fits the ITU framework, and what you can and cannot read from a call sign.
- ITU Regions and the IARU: Who Actually Sets Amateur Frequencies 2026-10-18 · Licensing & Regulations
The band edges you memorized are not universal. This article traces the chain from the ITU Radio Regulations through national regulators to IARU band plans, and explains why a neighboring country's 40-meter band may not match yours.