One legal mobile repeater family exists in Australia, and the difference between it working brilliantly or barely is the installation: donor antenna placed by measurement, coax that doesn't eat the gain, internal antennas where coverage is needed. We install Cel-Fi and carrier-approved repeaters across Brisbane as the RF-and-cabling trade the job actually is.
Prefer to talk? Call Chris — 0412 853 618
SOS-only at the desk, calls that live on the verandah, a warehouse where the network gives up at the roller door — tell Chris the building and the carrier, and he'll come back with straight advice and a fixed price. Prefer to talk? Call 0412 853 618.
"Full bars in the car park, SOS-only at the desk" is a construction story, not a carrier one: concrete, steel cladding, foil insulation and coated glass strip mobile signal layer by layer until indoors might as well be underground. The carriers can't fix your walls — but a mobile signal booster can route around them: capture the signal where it's clean, amplify it legally, and re-broadcast it where people actually work.
Unified Network Solutions installs carrier-approved boosters — Cel-Fi GO and its authorised siblings for Telstra and Optus — as a measured trade: donor signal surveyed with instruments, the antenna aimed where the chosen carrier is cleanest, coax runs sized so the cable doesn't eat the gain, and coverage verified at handover. As a mobile signal booster installer with a cabling registration (ACMA #42489) and RF habits from WiFi and DAS work, we deliver what the hardware promised on the box — which, installed properly, it genuinely does.
Cel-Fi GO is the carrier-approved smart repeater that owns Australia's legal booster market: up to 100x gain on a single carrier, self-managing so it can't interfere with the network, and approved by the carriers themselves. The mobile repeater hardware deserves its reputation. The installs mostly don't — because the unit is half the system, and the other half is radio work.
As a cel-fi installer we do the whole system: donor signal measured around the building and up the mast options, the external antenna mounted and aimed at the measured best — not the convenient bracket — low-loss coax sized to the run (every metre of cheap cable refunds the gain you paid for), the internal antenna placed for the rooms that matter, and the result verified on instruments and on the phones people actually carry.
DIY units that never delivered get rescued weekly: usually a donor antenna aimed at hope, or twenty metres of bargain coax doing quiet sabotage. The fix is often relocation and re-cabling rather than new hardware — your cel-fi go was fine; its installation wasn't.
Australia's rule is simple: a mobile repeater — telstra signal booster, optus signal booster or any other — is legal only if the carrier authorises it. Everything else is an ACMA interference case with your address on it.
Approved means approved per carrier. A telstra signal booster amplifies Telstra; an optus signal booster amplifies Optus — one unit, one carrier, chosen from whose SIMs your building actually carries.
Marketplace boosters are illegal to operate. The cheap generic units online interfere with live networks, carry real penalties, and get hunted — the carriers triangulate interference for a living.
Legality is half our value. Everything we install is authorised, registered where required, and configured so the carriers stay friends with your rooftop.
The steel-clad warehouse is the booster's natural habitat: outside, the signal is fine; inside, the cladding turns the building into a radio shadow where drivers can't call dispatch and SIM-based scanners drop off the network mid-aisle. A roof-mounted donor antenna above the steel, a properly sized coax run, and one or more internal antennas across the floor — and the phone booster commercial buyers actually wanted exists: the whole shed back on the network.
A telstra signal booster suits the Telstra-fleet office; an optus signal booster suits the office whose SIMs lean the other way. Offices otherwise follow the same logic with different geometry: coated glass and concrete leave the core SOS-only while window desks cope. We place the mobile repeater's internal antennas for the meeting rooms, the back offices and wherever "no reception in building" complaints cluster — measured, not guessed. Multi-antenna layouts cover larger floors; beyond that, the honest escalation is a distributed antenna system, and we'll say so before you overspend on the wrong architecture.
Homes get the same treatment scaled down — acreage properties at the edge of coverage and new builds with energy-rated everything are the regulars.
Same hardware, wildly different outcomes. The installation variables that decide which one you get:
Measured around the building and aimed at the carrier's cleanest signal — the single biggest performance variable, and the one DIY installs guess.
Low-loss cable, sized to the run, terminated properly — RF leaks out of every cheap metre, and the booster can only amplify what arrives.
Coverage where people work, not where the power point was — and separation from the donor antenna so the system runs at full gain without self-interference.
A telstra signal booster for Telstra fleets, an optus signal booster for Optus — the mobile repeater matched to the building's actual SIMs, and each carrier's donor signal measured first, because a mobile repeater can't amplify what isn't there.
Before-and-after measurements on instruments and real phones, room by room — the difference proven, not described.
Runs installed under ACMA #42489, mounted and dressed properly, system documented — infrastructure, not a gadget on a shelf.
"No reception in building" arrives wearing the same handful of outfits. The regulars, and what fixes each:
Perfect signal outside, radio silence inside — cladding's doing. Roof donor antenna plus internal antennas across the floor; the textbook job.
New fit-out, coated glass, SOS-only in the core — energy ratings ate the bars. Internal antennas where the complaints cluster.
Edge-of-coverage property where calls live in one corner of the deck — a high-gain donor antenna on a mast finds what the phone can't.
Practitioners unreachable mid-corridor, patients can't confirm appointments — discreet internal antennas and a telstra signal booster or optus signal booster matched to the practice's carrier.
The business runs from a shed the network forgot — a cel-fi mobile repeater, mast and the patience to aim it properly; we do regional by arrangement.
A cel-fi go bought online, installed hopefully, performing politely — relocation, re-aiming and real coax usually rescue the cel-fi for less than you'd think.
Each carrier's signal measured around the building and roof — which carrier, which corner, which mounting point, answered with instruments.
Unit matched to your carrier, antennas and cabling specified for the building — or an honest referral up to DAS where one booster can't cover it.
Donor antenna mounted and aimed at the measurement, low-loss coax run and terminated, internal antennas placed for the rooms that matter.
Coverage proven before-and-after on real phones, the system documented — and the verandah retires as the office phone booth.
The unit comes from a box; the performance comes from the installer. We're built for the second part.
Donor signal measured, not eyeballed — the same survey discipline as our WiFi heat-mapping and DAS work, pointed at carrier spectrum.
Carrier-approved equipment only, configured and registered properly — your rooftop never becomes an ACMA case study.
Antenna runs cabled under ACMA #42489, mounted and dressed like infrastructure — because that's what it is, and it shows in year five.
A professionally installed Cel-Fi GO system — the unit, donor antenna, internal antenna, cabling and commissioning — typically lands $2,000–$3,500 for a home or small office, and $3,000–$6,000 for warehouses needing external antennas on masts or multiple internal antennas. The unit is roughly half the cost; the installation quality is what makes it actually work. Fixed quotes from a quick survey — call 0412 853 618.
Only carrier-approved repeaters are legal — in practice that means Cel-Fi and a small family of authorised equivalents, each approved for a specific carrier. A generic mobile repeater from an online marketplace is illegal to operate, interferes with mobile networks, and ACMA pursues interference sources with real penalties. Everything we install is carrier-authorised — it's the difference between a signal booster and a fine.
Cel-Fi GO is the carrier-approved smart repeater that dominates the legal booster market in Australia: it amplifies one carrier's signal with up to 100x gain, self-manages so it can't interfere with the network, and is approved by the carriers themselves. It earns the recommendations because it works — provided the donor antenna is placed where signal actually exists and the installation is done properly, which is the part we bring as a cel-fi installer.
Approved repeaters amplify one carrier each — a telstra signal booster won't help Optus phones and vice versa. The choice follows whose SIMs live in the building: a Telstra-fleet workplace needs a telstra signal booster; an Optus office needs an optus signal booster; mixed environments either pick the majority carrier or run one mobile repeater per carrier. We measure each carrier's available signal during the survey, because boosting the carrier with no usable donor signal helps nobody.
Construction, almost always: concrete, steel framing, foil insulation and coated glass each strip decibels off the outdoor signal, and together they leave SOS-only indoors while the car park has full bars. Newer, energy-efficient buildings are usually worse. A booster fixes it by capturing outdoor signal with a properly placed donor antenna and re-broadcasting it inside — engineering around the building rather than arguing with it.
Usually — steel sheds are classic booster territory because the problem is the cladding, not the location. A roof-mounted donor antenna above the steel picks up clean signal, and one or more internal antennas re-distribute it across the floor. Very large footprints may need a second mobile repeater, more internal antennas, or a step up to a distributed antenna system; the survey tells us which before you spend anything.
You can — and about a third of our booster work is rescuing DIY installs. The unit is the easy half: performance lives in donor antenna placement (measured, not guessed), cable quality and length (RF loses signal in every metre of cheap coax), and internal antenna positioning. A professionally surveyed and installed unit routinely outperforms the same hardware self-installed by several bars' worth of real-world difference.
We service Brisbane CBD, North Brisbane, South Brisbane, Gold Coast, Sunshine Coast, Ipswich, Logan, Moreton Bay, Redlands, and the wider South East Queensland region. For larger projects, we can service regional Queensland by arrangement.
When one or two internal antennas can't cover the space: multiple floors, basement-plus-levels combinations, very large floor plates, or buildings needing several carriers covered properly. That's distributed antenna system territory — same physics, bigger architecture. We do both, so the survey's answer is the recommendation; plenty of enquiries that arrive asking about DAS leave with a cheaper booster, and a few go the other way.
Because the booster is a radio system, not an appliance: donor signal must be measured and the antenna aimed where it's cleanest, coax runs sized so the gain survives the cable, internal antennas placed for coverage rather than convenience, and the result verified with instruments. We're a cel-fi installer with a cabling registration (ACMA #42489) and an RF habit from WiFi and DAS work — the booster arrives configured for your building, not hoping about it.
Cel-Fi GO installs, telstra signal booster and optus signal booster deployments, and every carrier-approved mobile repeater in between — warehouses, offices, medical suites, acreage homes and new builds across Brisbane CBD and metro, Logan, Ipswich, Redlands, Moreton Bay, the Gold Coast, and the Sunshine Coast. Signal surveyed before quoting, every mobile signal booster legal and matched to your carrier, antenna runs cabled under ACMA #42489, and coverage proven on your own phones at handover. The building took your bars; we're the trade that gets them back.
Building type, your carrier, and where the signal dies — that's enough for a survey and a fixed quote. The hardware is proven; the installation is the variable, and that's the part you're hiring.
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Unified Network Solutions