"Heavy jamming on all emergency frequencies," the flight engineer reported.

Newman decided to try the radio, using the pre-set emergency frequency.

"Ship's regulations require constant monitoring of the emergency frequency if anyone is missing."

Call for help for emergency frequencies in current use.

Seven years later, Oklahoma still has not harmonized its emergency frequencies.

Have a battery-powered radio available in order to monitor emergency frequencies often.

The control at Canaveral did not answer the next message, nor was there any response when they tried the emergency frequencies.

The colonel in aircraft two raised Lakenheath on an emergency frequency.

He reached out to the pilot on the emergency frequency.

The monitor showed half a dozen messages, either being sent or in waiting mode on the emergency frequency.