Part of our Emergency Communications and Preparedness guide.
DMR has quietly become one of the most enjoyable ways to stay connected in amateur radio. Through networks like Brandmeister and TGIF, a handheld and a hotspot let you drop into conversations with operators anywhere in the world, join special-interest talkgroups, and keep in daily touch with friends across the country. It’s social, it’s convenient, and it’s a genuinely great way to play radio. But there’s a persistent myth in some corners of the hobby that this same setup is a solid emergency communications plan, and that’s where I want to raise a flag.
Why DMR talkgroups are so much fun
Let’s give credit where it’s due, because the appeal is real. Talkgroups on Brandmeister and TGIF give you instant access to a huge, active community. Some of what makes them great:
- Global reach from a handheld. A low-power HT and a hotspot the size of a deck of cards can talk to someone on the other side of the planet with crystal-clear audio.
- Organized communities. Talkgroups let people with shared interests, regions, or clubs gather in one place, so there’s almost always someone to talk to.
- Consistent quality. No fading, no noise, no waiting for a band to open. Digital voice sounds the same whether your contact is across town or across an ocean.
- Low barrier to entry. You don’t need a tower, a beam, or a big station. This makes it perfect for apartment dwellers and operators with restrictions.
For everyday ragchewing and keeping in touch, it’s hard to beat. I use it and enjoy it, and I’d recommend it to anyone.
The problem when the lights go out
Here’s the uncomfortable truth. Everything that makes DMR talkgroups convenient depends on infrastructure that is exactly the kind of thing that fails in a real emergency. When people talk about SHTF scenarios, they usually mean situations where normal systems break down: grid-down events, natural disasters, wide-area outages. Those are precisely the conditions under which a talkgroup goes silent.
Trace the path your voice takes on a typical DMR talkgroup contact and the fragility becomes obvious:
- Your radio talks to a local hotspot or repeater, which needs power.
- That hotspot connects to your home internet, which needs power and a working ISP.
- Your traffic crosses the wider internet backbone to reach the network servers.
- A Brandmeister or TGIF server, sitting in a data center somewhere, routes your audio to everyone else on the talkgroup.
- Every other participant depends on their own power, internet, and hotspot too.
That’s a long chain, and every link needs mains power and a functioning internet. Knock out the grid in your area and your hotspot dies. Knock out internet service and even a battery-powered hotspot is useless. Take down or overload the network servers and the entire system goes quiet regardless of what any individual operator does. A talkgroup isn’t a radio link between you and your contact; it’s an internet service that happens to use radio at the very last step. In a genuine SHTF event, that service is one of the first things to disappear.
What actually works when infrastructure fails
Real emergency communication has to survive without the grid and without the internet. That means leaning on the parts of the hobby that are self-contained:
- Simplex operation. Direct radio-to-radio contact on VHF and UHF needs nothing but two radios and batteries. Know your local simplex frequencies and practice using them.
- HF for distance. HF can span regions and continents with no infrastructure at all, bouncing signals off the ionosphere. A modest HF station on battery or solar is a true grid-independent link.
- Weak-signal and message modes. Modes like JS8Call let you pass text messages over HF under poor conditions, with relaying built in, and they run off a laptop and a radio.
- Local repeaters with backup power. Some analog and digital repeaters have batteries or generators. Know which of your local machines are hardened and which will drop when the power does.
- Battery, solar, and antennas you can deploy anywhere. The gear that keeps working is the gear that doesn’t depend on the wall socket or the wire from the street.
Enjoy it for what it is
None of this is a knock on DMR. Brandmeister and TGIF are wonderful, and I’m not suggesting anyone stop using them. The point is to be clear-eyed about what they are. They are a superb tool for everyday connection, community, and the pure fun of playing radio. They are not a communications plan for when the infrastructure they rely on has collapsed.
Keep enjoying your talkgroups. Just build your emergency preparedness on modes and equipment that stand on their own. Practice simplex, get comfortable on HF, keep batteries charged and antennas ready, and treat DMR as the excellent fair-weather friend it is. When the weather turns, you’ll want the tools that don’t need anyone else’s servers to keep working.
New to DMR talkgroups? See Getting Started with DMR. For the self-contained side of things, our PACE communications plan covers building redundancy that doesn’t depend on infrastructure.