The Cel-Fi 3G mobile repeater was designed to amplify and disburse a 3G mobile signal within a building without causing any interference to the mobile network. The Cel-Fi is locked to the carrier and will only amplify a signal in that carriers set frequency range. It does not support the GSM band. The System compromises of two boxes, a Window Unit (WU) and a Coverage Unit (CU):
Cel-Fi Window Unit
This communicates with the mobile base station, amplifies the signal and passes it to the Coverage Unit via a wireless link.
Cel-Fi Coverage Unit
Is responsible for disbursing the mobile signal within the building to multiple mobile devices.
Cel-Fi RS2 3G Repeater
A key point of difference from standard indoor reception mobile repeaters that are already on the
market is that the Cel-Fi operates without clashing with the 3g mobile network or any other
This means that the device will provide maximum coverage but at the same time let the
existing network continue to function as though it isn’t there. It’s akin to having a
houseguest who prepares their own meals and helps with the cleaning: minimal impact,
but with added benefits thrown in.
The mobile repeater device conserves power by regularly monitoring the signal strength from the cellular
tower from which it draws the signal. If the 3g mobile signal is strong, the Cel-Fi conserves power, if
it’s weak, the Cel-Fi increases its output to compensate for the weak signal.
The install process is very simple and this is a major reason for the strong reviews the Cel-Fi 3g mobile repeater has received to date. The device can also be shut down remotely, so it can be placed out of sight.
An additional bonus is that the Cel-Fi RS2 has made it through Telstra’s rigorous testing
process and is approved for use on their flagship Next G Network, meaning that 3G mobile
internet users can get the full benefit of their existing high-speed connections.