Signal Hero Ultra 300 Pro Mobile Signal Booster for Small and Medium Homes & Offices UK

Signal Hero Ultra 300 Pro

Overview

Technical Sheet
NETWORK COVERAGE

All Networks - Band 28, Band 8, Band 1 and Band 7 - 700/1800/2100/2600 Mhz
MAX GAIN

72 decibels (dB) amplification
IMPEDANCE

50 Ohm
POWER

DC6-9V/AC100-220V
BOOSTER WEIGHT

≤0.9 kg
BOOSTER DIMENSIONS

220 × 145 × 55 mm

FAQ

Why a mobile signal booster is the best solution for poor reception?

A mobile signal booster is the only working solution if you have a weak signal and dead zones. It helps to improve signal strength so you can access the internet more quickly, and stream videos without buffering.

With our booster you can make and receive calls without interruption, ensuring you’re always in touch with your family and friends.
In general, the booster catches the signals from the nearest cell tower in the area by the external antenna which is included in the kit, then it sends the signal to the booster box. The box amplifies the signals, ensuring reliable coverage even in areas with poor signal strength, and the internal antenna spreads the signals inside the closed area.
Please, help me to find the best booster. How do I know Which one?

If you want to find the best booster for you there are 2 easy options:
1. Use our Booster Finder Wizard to find the best booster based on your needs.
2. If you’re still having trouble finding the right booster after using the Wizard, contact our technical support team via chat or phone. They’ll be happy to assist you in finding the best solution.
What make your boosters different?

1. At australiamobileboosters.com, we are committed to providing high-quality boosters at unbeatable prices.
2. Since 2010, we’ve been dedicated to improving cellular signals with our specialized boosters, putting our CUSTOMERS FIRST every step of the way.
3. Our boosters fix more than the signal. Our customers enjoy fewer dropped calls, better voice quality, faster internet speeds, and improved video streaming.
4. In addition, we provide peace of mind with our industry-leading 24/7 after-sale service:
– Lifetime Support
– 2-Year Warranty
– Installation Services (for enterprise solutions)
5. And if it’s not a perfect solution for you, we’ll refund your purchase or replace it. No hard feelings.
Does this need installation? Can I set it up myself?

Installing our boosters is easy – in fact, 98% of our customers do it themselves. The device is plug-and-play, so all you need to do is attach the units with cables and mount the antennas. We provide simple installation guides and videos to help you along the way.

Moreover, we offer technical aftersales support after the delivery of your device, so you can have peace of mind knowing we’re here to help.

Reviews:

5.0

127 customer reviews

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Reviews (127) Questions (0)

Jacob V. Verified Customer2026/11/02

The upstairs office was effectively a dead zone after phones kept dropping back to emergency calls. The Ultra 300 Pro has been a good fit for the upstairs office in our family home without making the setup unnecessarily complicated. It took two attempts to find the best antenna direction, so the first setup should not be treated as final around the upstairs office in our family home. Both voice service and mobile data have become reliable enough for daily work across the upstairs office of our family home. Good separation between the outdoor and indoor antennas kept the booster stable during normal use in the upstairs office of the family home.

Franklin H. Verified Customer2026/10/26

This work great in my office. My signal went from 0 bars to 4 bars on 4G internet. I'm quite amazed that it worked. This is so worth the money - excellent service.

Aiden Y. Verified Customer2026/10/13

Working from the packing room was frustrating in the guesthouse, where the signal vanished once the doors were closed. Once the outdoor antenna cleared the roofline, both 4G and supported 5G improved indoors around the packing room in our guesthouse. The connection is not perfect in every corner, but the important areas are properly covered across the packing room of our guesthouse.

Robyn W. Verified Customer2026/10/02

People using the rear bedroom regularly complained that messages arrived well after they were sent. The unit runs warm during use, yet performance has remained stable around the rear bedroom in our converted shed. The strongest change is consistency rather than a dramatic number of bars across the rear bedroom of our converted shed.

Alfred R. Verified Customer2026/09/17

The service counter showed how poor the indoor coverage was, as video calls froze whenever anyone moved rooms. Messages arrive promptly, calls no longer cut out, and mobile data works without constant retries around the service counter in our granny flat. Messages, banking apps and navigation updates now work from inside the building across the service counter of our granny flat. 5G availability still depends on the network, but the phone holds it more consistently indoors during normal use in the service counter of the granny flat.

Signal Hero Ultra 300 Pro

Benefits and Features:

Overview

FAQ

Reviews: