Most Australian preppers have food and water sorted. Almost none of them have a communication plan.
Your phone will be useless within 4 hours of a real grid-down event. Here's what actually works — and what most Australians have never thought about. Every preparedness conversation eventually gets to food, water, and shelter. Almost none of them get to communication — and that's a problem, because in a real emergency, information disappears faster than any of those things.
Here's what actually happens when the grid goes down, because most people have never thought through the sequence: Within the first 30 minutes, mobile networks are congested. Call volumes spike five to ten times normal. Calls drop, messages hang, data crawls. Most people assume it's temporary and keep trying.
Within 4 to 8 hours, towers start going dark. Mobile towers have battery backup — but it's sized for hours, not days. As grid power stays off, coverage maps shrink progressively. You might still have signal. Your neighbour three streets away might have none.
By hour 12 to 24, for most people without preparation, digital communication is effectively over. What information does get through is fragmented, delayed, or based on rumour. And this is exactly where bad decisions get made. The people who are still informed at the 24-hour mark aren't the ones with the best phones. They're the ones with a $40 battery radio picking up ABC Emergency.
**What actually works when the grid goes down:**
A battery or hand-crank AM/FM radio is the single most important communication tool you can own. ABC coordinates with NEMA during major emergencies and broadcasts continuously on AM. Your local ABC frequency works when nothing else does. Do you know what it is off the top of your head? Most people don't — and they can't look it up when the internet is gone.
UHF CB radio becomes your local communication network. No licence required, handhelds cost $80 to $200 for a pair, and in a neighbourhood where a few households have them, you suddenly have a functioning local information network that doesn't depend on any infrastructure. Channel 5 and 9 are the monitored emergency channels. Channel 40 is the most widely used road channel. Pick a dedicated channel for your street or group in advance.
Meshtastic — if you haven't heard of it, look it up. $40 to $100 LoRa radio nodes that create a peer-to-peer mesh network requiring no internet, no towers, no infrastructure. Each node relays messages to the next. In a neighbourhood where ten households have one, you have a communication network that becomes more capable the more people join it.
And then there's the thing almost nobody does: storing information offline. Maps. Emergency contacts. Your local ABC frequency. Your doctor's number. The school's direct landline. Your insurance policy numbers. If you can't open it without a connection, you don't really have it.
The part that I think surprises people most: In the 2022 Lismore floods and on Black Saturday, misinformation spread faster than the emergency itself. People stayed when they should have left. People used routes that were flooded because someone heard they were clear. People made decisions based on what a neighbour's cousin heard from someone at the servo.
Having a communication plan isn't just about talking to your family. It's about maintaining access to verified information when the information environment has broken down completely. The gap between prepared and unprepared households becomes obvious around the 48-hour mark. Prepared households know what's happening, what services are available, and roughly how long the situation will last. Everyone else is reacting to whatever they last heard — which may have been accurate twelve hours ago.
**The minimum kit — all of it available from Jaycar, BCF, or Supercheap:**
- Battery or hand-crank AM/FM radio: $30 to $80
- UHF CB handheld pair: $80 to $200
- Spare AA batteries, 24 pack: $20
- 20,000mAh power bank: $40 to $80
- Printed emergency contacts and local map: $0
Under $400 for a family. Less than most people spend on food storage. We put together a full guide on the wiki covering every radio system, Australian emergency frequencies, a household communication plan template, what to store offline, and a full kit list with costs: https://wiki.survivalstorehouse.com/wiki/Grid_Down_Communication
What's your current communication backup? Specifically — do you have a radio, and do you know your local ABC AM frequency without looking it up?
