The Cel-Fi GO is an extremely effective repeater designed to improve mobile phone and data coverage. This model has been designed to improve Telstra 3G and 4G services in a matter of minutes.

Setting up the repeater to improve indoor mobile coverage is simple. The unit has an input connection and an output connection which are set up as follows:

• Input connection: connected to roof mounted antenna by cable
• Output connection: can either connect directly to an antenna, or can use one or more cables to distribute signal elsewhere.

The Cel-Fi GO works by decoding and amplifying weak signal detected by the roof mounted antenna. This cleaner signal is then rebroadcast at full "five bar" strength by the antenna connected to the output port.

Mobile services can be distributed throughout a large home or building by using a series of antennas, creating localised hotspots of 3G or 4G service. This type of system is known as a Distributed Antenna System (DAS) and needs to be carefully designed to ensure proper functioning.

The Telstra Cel-Fi GO can operate on one frequency band at a time. With Telstra shutting down its 3G network the unit should be set to operate on the 700 MHz 4G network which provides both voice and high speed internet services.