This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.
请输入您的呼号。
呼号是您用本APP进行FT8呼叫的基本要求。您如果在中国境内，请使用符合《中华人民共和国无线电管理条例》的合法呼号，禁止一切非法发射！
关于修饰符
CQ后面可能跟有三个十进制数字或一到四个字母的修饰符，一般是000-999或A-Z或AA-ZZ或AAA-ZZZ或AAAA-ZZZZ。例如：CQ POTA callsign grid。