Fixed wireless broadband for business: when it works and when it does not

How fixed wireless works

There are two broad types. The first uses the 4G or 5G mobile network: a modem or outdoor antenna at your premises connects to the nearest mobile tower, and the service is sold as a home or business broadband plan rather than a phone plan. The second uses dedicated wireless networks run by regional providers, often beaming from a hilltop tower to a small dish on your building, which is common in rural districts.

In both cases, nothing is dug into the ground to reach you, which is why installation is often quick and cheap compared with fibre. The trade-off is that radio signals are affected by distance, terrain, buildings, trees and the number of other users sharing the same tower. Two neighbouring properties can get very different results.

Where it suits a business

Fixed wireless makes most sense where fibre is unavailable or would take months to install, such as a rural property, a new subdivision still waiting for fibre, or a temporary site. A small office of a few people using email, cloud accounting and calls can work well on a good connection. It is also a popular backup for fibre, since it does not share cables with the main line.

It is less suitable for offices that upload large files constantly, run many simultaneous video calls or host services that others connect to. Busy evenings and peak business hours can bring slowdowns if the tower is congested. If your work cannot tolerate variable speeds, fibre or a dedicated service is the safer foundation where available.

Testing before you commit

Before signing up, test signal and speed at the exact place the modem or antenna would sit, at different times of day. A mobile phone on the same network gives a rough indication, but a trial modem is more accurate. Many providers offer a short trial period or a cooling-off arrangement; ask about it. Check upload speeds and latency as well as download. Make a test VoIP call or a video meeting during your busiest hour. If results swing widely between morning and afternoon, the tower may be congested, and that will not improve just because you are a business customer.

Improving signal

An outdoor antenna mounted high with a clear line towards the tower usually makes a large difference, especially in buildings with metal cladding, concrete walls or tinted glass. Antenna cabling should be kept short and of good quality. For dedicated rural wireless, the provider's installer aligns the dish to their tower during installation. Inside, connect the modem to a business firewall and proper Wi-Fi rather than relying on the modem's built-in Wi-Fi, which is often weak. If the best signal spot is far from the office, run a data cable from the antenna position or use a point-to-point wireless link between buildings.

Fixed wireless versus Starlink

Mobile-network fixed wireless typically has lower latency than satellite and can be cheaper, but depends on a nearby tower with capacity. Starlink depends only on a clear view of the sky, so it can reach places with no usable mobile signal, though it has its own occasional interruptions. In some rural areas, regional wireless providers give the best performance of all. Many rural businesses run one as primary and the other as backup, with a firewall switching between them automatically. That combination gives two completely separate paths to the internet, which covers most outages short of a prolonged regional power cut.

Plans and fine print

Read the plan details carefully. Some fixed wireless plans have data caps, fair-use policies or speed management during peak times. Business plans may offer better support and priority. Check whether the plan can be used only at a registered address, as some mobile-based fixed wireless services are locked to a location. Ask about contract term, equipment ownership and what happens if your area becomes fibre-ready during the contract. If copper is being withdrawn at your address, your provider may offer fixed wireless as the replacement; test it carefully, especially if you rely on it for alarms or EFTPOS.

Finally, think about power. A fixed wireless modem and antenna need mains power at your end, so a short UPS keeps them running through a brief outage, along with your router and any desk phones. Note where the modem is and how to restart it, because a simple power cycle fixes many wireless dropouts and staff should know how to do it without calling for help.