If only one channel is available in the frequency band equipment protection can be optionally implemented with a1 + 1hot standby configuration.
如果频带中只有一个信道可用，可以选择使用1 + 1热备用配置实现设备保护。
2
A standby HD channel featuring live soccer matches or sports events taking place at the same time such as UEFA Champions League, UEFA Europa League etc.