Radio Network Structure

Radio communications operate in a hierarchical structure.

State Net Control | Regional Net Control | Field Stations

Net Control Responsibilities

Net Control Stations are responsible for:

This plan provides recommended frequencies for statewide and regional communications.

Actual frequencies may vary depending on interference and propagation conditions.

Purpose: Statewide coordination across Western Australia.

Primary Day Frequency
7.110 MHz LSB

Alternate Day Frequency
7.090 MHz LSB

Night Frequency
3.600 MHz LSB

Digital Messaging
7.078 MHz (digital modes)

Purpose: Local operational communications.

Typical structure:

Metro / Regional Repeater Net
Primary coordination channel

Field Tactical Simplex
Short range team communications

Example:

Perth Metro Net
Primary Repeater

Field Tactical
Simplex Channel

Scheduled nets ensure all stations remain informed.

Example schedule:

00 minutes past hour
Statewide SITREP Net

30 minutes past hour
Operational coordination net

Additional nets may be scheduled as required.

Digital messaging allows structured message passing when voice channels are busy or unavailable.

Recommended systems:

Winlink JS8Call FLDIGI

Digital messaging should be used for:

Situation reports

Logistics requests

Resource tracking

Long form messages

Message archiving