One Radio Mistake That Quietly Breaks Your Emergency Plan
Every emergency plan in Australia must provide for effective communication between the person coordinating the response and everyone at the workplace. That is Regulation 43 of the model WHS Regulations, and on a noisy, spread-out worksite, two way radios for construction crews are usually how you satisfy it. Yet most sites buy radios the way they buy extension leads: on price, in a hurry, with no thought for channel rules, licensing, or what happens when the whole crew needs to hear one instruction at once.
The Alarm Starts the Response. Radios Run It
An evacuation alarm does one job brilliantly: it tells everyone to move, now. Everything after that first siren runs on voice. Someone confirms the muster count. Someone sweeps the amenities block. Someone meets the fire brigade at the gate and tells them where the LPG cage sits. If those conversations rely on shouting or mobile phones, the response slows at exactly the moment seconds matter.
Radios and warning systems work as layers of the same system. Our guide to emergency alarm protocols for commercial and industrial sites covers the alarm layer; radios carry the coordination the alarm cannot. Phones do not fill that gap. A radio call reaches the whole channel instantly, with one press, through gloves, on no network at all. A phone call reaches one person, after they unlock a screen, on a network every other emergency in the area is also using.
What WHS Law Expects From Your Site Comms
Regulation 43 requires every workplace to prepare an emergency plan providing for evacuation procedures, notification of emergency services, medical treatment, and effective communication between the response coordinator and everyone on site. Safe Work Australia sets out the full duty, including the requirement to test your emergency procedures.
Read those two obligations together and the standard turns practical: if your drill relies on radios, the drill is also a radio test. Flat batteries, dead zones behind the lift core, a channel clogged with delivery chatter: these are findings, and they belong in the drill report next to the slow stairwell. On shared sites, duty holders must coordinate their plans, and on construction projects that job typically sits with the principal contractor. Our post on who owns emergency procedures on site unpacks where that duty lands.
The Channel Rules Most Sites Have Never Read
UHF CB radio in Australia operates under an ACMA class licence. Nobody applies for anything and nobody pays a fee. Buy a compliant handset, switch it on, and you hold the licence, provided you follow its conditions. A new version of that class licence commenced on 1 October 2025, so the rules are current, and they matter on a busy site:
- CB channels are shared. The crew on the neighbouring site can hear you, and legally use the same channel.
- Channels 5 and 35 exist for emergencies only. Routine site traffic on them breaches the licence conditions.
- Channels 22 and 23 carry data only. The licence bans voice on them.
Anything beyond the designated CB channels needs an ACMA apparatus licence, including dedicated digital DMR channels.
That last point is where serious sites end up. Shared channels handle lifting calls and gate movements well enough. For emergency coordination, a licensed digital channel gives you privacy, cleaner audio, and a frequency no neighbouring site can talk over.
Choosing Two Way Radios for Construction Work
Spec the fleet against the site and the emergency case before price enters the conversation:
- Ingress protection. Site radios live in rain, slurry and dust. The Entel DX485 carries an IP68 rating and survives full immersion at 2 metres for 4 hours.
- Audio that beats the plant. Volume and clarity decide whether an instruction lands next to a vibrating screed or an excavator.
- Digital capability. DMR-ready handsets let you add licensed secure channels later without replacing the fleet.
- Battery across a full shift, backed by a charging routine that survives a Friday.
- Hire or purchase. Project-length needs suit hire; a permanent yard suits ownership. We offer both.
Our Security and Communications range covers Entel, Icom and Motorola handsets, selected for the same harsh environments our alarm systems already work in and supplied under our Master Security Licence.
A radio fleet designed beside your evacuation system, rather than bolted on after it, means the channel plan, the alarm zones and the muster procedure all speak the same language. Tell us your site size, headcount and noise conditions on 1800 273 473 or at sales@checkpointgroup.com.au and we will spec a fleet that answers Regulation 43, with hire terms matched to your programme.
