emergency radio channel meaning in Hindi

Examples

1. The destroyer provided medical advice over the emergency radio channel and launched a helicopter to render assistance.
2. Holtz, panic-stricken, radioed for help, at first giving the wrong coordinates, according to a boater who listened over the emergency radio channels.
3. "He said he had completed his mission but still had some gas left and decided to fly around the area where ( O'Grady ) when down and check out the three emergency radio channels they were using,"