Radio Communication Flashcards

What is the purpose of a repeater in wildland fire radio operations?

Answer: To extend radio coverage by receiving and retransmitting signals

A repeater receives a signal on one frequency and retransmits it on another, extending the effective communication range over terrain.

When conducting a radio check, which response from the receiving station confirms excellent signal quality?

Answer: 'Loud and clear' or '5 by 5'

'Loud and clear' or '5 by 5' indicates the strongest possible signal strength and clarity.

A Division Supervisor cannot reach the Operations Section Chief by radio. What is the safest immediate action?

Answer: Send a runner or use an alternate communication method

Using a runner or alternate communication method maintains situational awareness when primary radio contact fails.

What information is typically included in an ICS-205 Incident Radio Communications Plan?

Answer: Assigned frequencies, channels, and contact information by function

The ICS-205 documents assigned radio frequencies, channels, and contact information organized by ICS function.

On a wildland fire, the term 'tactical channel' refers to which type of radio frequency?

Answer: A working channel assigned for operational communications within a division or group

Tactical channels are working frequencies assigned to specific divisions or groups for day-to-day operational communications.

Which radio practice helps prevent two units from transmitting simultaneously and causing interference?

Answer: Listening before transmitting to ensure the channel is clear

Monitoring the channel before transmitting prevents simultaneous transmissions (doubling) that result in garbled, unreadable messages.

What does 'MAYDAY' signify when transmitted on a wildland fire radio channel?

Answer: A distress call indicating a firefighter is in immediate life-threatening danger

MAYDAY is an internationally recognized distress signal used when a firefighter faces an immediate, life-threatening emergency.