PSD Radio Operations & Incident Dispatching 2

Question 1

When a field unit requests a radio channel change during an active incident, what should the dispatcher do first?

Accepted Answer

Confirm the unit's current assignment and ensure coverage before switching

Answer

The dispatcher must verify that the unit's current assignment will remain covered and that the new channel is appropriate before authorizing the switch.

Question 2

In radio communications, what does the term 'simplex' operation mean?

Accepted Answer

Transmitting and receiving on the same frequency, one at a time

Answer

Simplex operation uses a single frequency for both transmitting and receiving, requiring users to take turns speaking.

Question 3

A dispatcher receives simultaneous emergency transmissions from two different units. What is the correct protocol?

Accepted Answer

Respond to the unit with higher call priority first and ask the other to stand by

Answer

The dispatcher should address the highest-priority transmission first, then promptly acknowledge the second unit.

Question 4

What is the primary purpose of a radio dead zone in dispatch operations?

Accepted Answer

An area where radio communications are unreliable or nonexistent due to terrain or interference

Answer

Dead zones are geographic areas where radio signals cannot reliably reach due to topography, buildings, or interference.

Question 5

During a major incident, a dispatcher is told to implement 'radio silence' except for emergency traffic. Which transmission would be appropriate to make?

Accepted Answer

A notification that a field officer is injured and needs immediate assistance

Answer

Radio silence orders allow only true emergency transmissions; an officer injury requiring assistance qualifies as emergency traffic.

(PSD) Certified Public Safety Dispatcher Practice Test

(PSD) Certified Public Safety Dispatcher Practice Test

PSD Radio Operations & Incident Dispatching 2