PRS radios, often called UHF CB, are where most businesses start with two-way radio. They’re affordable, available off the shelf and can be used without applying for a licence. For a small crew on one site, they can be enough to get you going.
But businesses change. Teams grow, sites get bigger, vehicles get added and health and safety expectations rise. At some point, the radios that worked fine five years ago become the thing everyone works around. Here are five signs your business has outgrown PRS CB, and what a commercial radio solution gives you instead.
First, what is PRS CB?
In New Zealand, the Personal Radio Service (PRS) uses 80 UHF channels in the 476–477 MHz band. It operates under a General User Radio Licence for Citizen Band Radio, which means anyone can use compliant equipment without holding a licence of their own. In return, the channels are shared with everyone else. The licence states that frequency use is on a shared basis and that the regulator accepts no liability for interference or for frequencies being unavailable.
A commercial radio solution is different. It runs on licensed frequencies issued for your business through Radio Spectrum Management, uses professional-grade radios, and can include repeaters, push-to-talk over cellular (PoC), digital features and central management.
1. Your team can’t get through
The most common sign is the simplest: messages don’t arrive. People walk to the end of an aisle, climb a bank or step outside to get a clear signal. Messages get repeated two or three times. Some parts of the site are known dead spots.
PRS radios talk directly from one handheld to another, so range is limited by terrain, buildings, steel structures and distance. The general user licence doesn’t cover operating your own CB repeater, so there’s no way to extend coverage across a large or complex site on your own channel.
A commercial system can fix this with professional radios, properly designed antennas and, where needed, your own licensed repeater installed in a high, central position. For teams spread across a region or the country, PoC radios use the mobile network to give coverage wherever there’s 4G.
2. Your channel is crowded or not private
Because PRS channels are shared, you may hear other businesses, trucks, farmers or recreational users on your channel. Busy channels mean waiting to talk, missed calls and confusion over who’s speaking. It works the other way too: anyone nearby with a PRS radio on the same channel can hear your conversations.
That might not matter for a working bee. It matters a great deal if your team discusses customers, security incidents, cash handling, deliveries or anything commercially sensitive.
With a licensed commercial system, your business operates on frequencies coordinated by Radio Spectrum Management rather than open channels anyone can use. Digital DMR radios add private calling and talk groups, and PoC systems run on private talk groups that only your devices can join.
3. You’ve outgrown one channel and one site
PRS works best when everyone is in one place, talking on one channel. Many growing businesses now have:
- Several teams that need their own channel, plus a way for managers to reach everyone at once.
- Vehicles that need to stay in contact with the site or the office.
- More than one site, or crews working across a region.
- Managers who need to monitor several teams without carrying several radios.
A commercial solution is built around how your business works. Channels or talk groups can be set up for each team, vehicles can be fitted with mobile radios, and a PoC dispatcher console can let your office see and talk to every team and site from one screen.
4. The safety stakes have gone up
Under the Health and Safety at Work Act 2015, businesses must manage risks to workers so far as is reasonably practicable. For many teams, reliable communication is part of how those risks are controlled: warning a forklift driver, calling an all-stop, raising the alarm after an injury or evacuating a site.
If your radios are part of your emergency plan, ask whether they’re up to it. Signs you need more than PRS include:
- Staff working alone or out of sight of others.
- Emergency procedures that rely on everyone hearing an evacuation call at the same time.
- A need to know where workers are when something goes wrong.
- Roles exposed to falls, machinery, vehicles or aggression.
Commercial radios can add features that most consumer PRS radios lack: a dedicated SOS button, GPS location, man-down alarms that trigger automatically if a worker falls or stops moving, and all-call broadcasts that reach every radio on the system.
5. Your radios keep failing
Consumer-grade radios aren’t designed for daily industrial use. Common complaints include:
- Batteries that don’t last a full shift.
- Radios that break when dropped, get wet or fill with dust.
- A drawer full of mismatched models, chargers and accessories.
- No repair service: when one fails, you buy another.
- Poor audio in noisy environments.
Commercial radios are built for work, with rugged, water- and dust-resistant designs, batteries sized for long shifts, professional headsets and speaker microphones, and repair and maintenance support. A standardised fleet also means one type of charger, one set of accessories and radios that can be programmed and managed consistently.
What does a commercial radio solution look like?
The right system depends on where your team works and what they need. Most businesses moving on from PRS fit one of these commercial radio options:
| Solution | How it works | Best for |
|---|---|---|
| Licensed simplex radio | Professional radios talking directly to each other on your own licensed frequency | Single sites and crews that mainly need privacy, clarity and better radios |
| Licensed repeater system | A repeater on a high point re-transmits every message across the site or area | Large or complex sites with dead spots, such as warehouses, plants, ports, farms and quarries |
| Push-to-talk over cellular (PoC) | Radios that work like two-way radios but carry voice over the 4G mobile network | Teams spread across a region or the country, vehicle fleets and multi-site businesses |
| Hybrid | A combination, for example a site repeater linked to PoC for vehicles and remote staff | Businesses with a main site plus mobile crews |
PRS CB vs a commercial radio solution
| PRS / UHF CB | Commercial radio solution | |
|---|---|---|
| Licence | General user licence, no application needed | Licensed frequencies, applied for and managed for you |
| Channels | Shared with anyone nearby | Your licensed frequency or private talk groups |
| Privacy | Anyone on the channel can listen | Private channels, digital calling and talk groups |
| Coverage | Radio-to-radio only | Can be extended with your own repeater or PoC |
| Safety features | Limited on most models | SOS, GPS, man-down and all-call options |
| Durability | Often consumer-grade | Built for daily work in tough conditions |
| Support | Replace when broken | Programming, repairs, maintenance and monitoring |
When PRS CB is still the right choice
Upgrading isn’t always necessary. PRS remains a sensible option for small teams on compact sites, short-term events, recreational use and businesses where communication isn’t safety-critical. If your radios reliably get through, your channel is quiet and nothing sensitive is said on air, you may not need to change.
Signals still supplies GME CB radios for exactly those situations. Our advice is based on what your team needs, not on selling the biggest system.
How to make the move
- Tell us how your team works: who needs to talk to whom, where, and what goes wrong today.
- We assess coverage, with a site survey where needed, and recommend simplex, a repeater, PoC or a mix.
- We handle the radio licensing. National simplex frequencies are available immediately; engineered repeater channels typically take one to four weeks.
- We programme and install the radios, repeaters and vehicle mobiles, then test coverage on site.
- We support the system with repairs, maintenance and, where needed, live network monitoring.
Not sure yet? Signals’ demo and rental fleet lets your team try commercial radios on a real working day before you commit.
Why upgrade with Signals
- More than 20 years in the two-way radio industry, with thousands of radios supplied to hundreds of customers nationwide.
- 312 active Radio Spectrum Management licences managed for customers — we apply for, hold and renew them for you.
- Exclusive New Zealand distributor for Kirisun, and an authorised dealer for Icom, Kenwood and GME, so we can match the radio to your budget and needs.
- Simplex, repeater and PoC under one roof, including New Zealand’s largest PoC fleet.
- Our own technicians in Christchurch and Auckland, working on site nationwide, with in-house repairs.
Talk to us about upgrading your radios. Call 0800 454 756 or email sales@signals.co.nz.
Related: Better radio coverage in warehouses and distribution centres · Radio repeaters explained · DMR vs push-to-talk over cellular
Common questions
Is PRS the same as UHF CB?
Yes. In New Zealand, the UHF citizen band is called the Personal Radio Service (PRS). It uses 80 shared channels in the 476–477 MHz band under a general user radio licence.
Do I need a licence for commercial radios?
Yes. Commercial radios operate on licensed frequencies. Signals applies for, coordinates, holds and renews the licence for you.
Can I keep using my PRS radios alongside a new system?
PRS radios can’t join a licensed or PoC system, but some businesses keep a few PRS radios for casual or low-risk uses while moving their core team to a commercial system.
Is a commercial radio system expensive?
It depends on the solution. Licensed simplex radios can be a modest step up from quality PRS radios, while repeater and PoC systems involve more equipment or a monthly service fee. Fewer dropped messages, less downtime and better safety usually make the case.
Can I try commercial radios before buying?
Yes. Signals has a demo and rental fleet so your team can trial radios on site.
This article is general information and isn’t legal or radio licensing advice. Responsibility for health and safety compliance rests with each PCBU.
Sources
- Radio Spectrum Management — Citizen Band Radio GURL: rsm.govt.nz
- NZ Gazette — Radiocommunications Regulations (General User Radio Licence for Citizen Band Radio) Notice 2011: rsm.govt.nz