He switched to the universal frequency and repeated the message.

He found little to hear, so he switched back to the regular frequency.

We meandered up to thirteen thousand feet, and I switched buttons to the tactical frequency we'd agreed on.

Sergeant Green switched from external to the medevac frequency and started coaching in the birds.

A burst of code flashed across Schwarz's screen, and he switched to the corresponding frequency.

Then with a final sigh he switched the radio to the local frequency and keyed the mike.

He switched to the special frequency used by employees of Swift Enterprises.

He shook his head and switched to the all-hands frequency.

"Dammit," he whispered, and switched back to the previous frequency.

He switched to the next frequency and leaned back, clearing his throat gingerly.