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The Differences Between the CEL-FI GO Repeater Mobile and Stationary Versions

Due for Release: Second Quarter of 2016

The CEL-FI GO comes in two versions: one is designed for stationary use, the other for mobile or nomadic use.

 

Mobile Model

Stationary Model

– Boosts only one band at a time– Boosts only one band at a time
– Made for vehicles, transport and marine applications– For building applications that require professional installation
– up to 70dB of system gain– up to 100dB of system gain
– Band selection button– Up to 900m2 indoor coverage area
– Bluetooth WAVE App for iPhone, Android & Computers– Band selection button
– Will cease to boost when a signal is already very good– Bluetooth WAVE App for iPhone, Android & Computers
– Ability to switch towers whilst moving at high speed– Includes external and internal antennas
– includes external and internal antennas

 

Signal Level Restrictions

The GO System designed for stationary use will relay any signal level including very weak or very strong signals.  The Stationary model can be used for the majority up application up to speeds of 60km/hr.

The GO System designed for mobile use will not boost in areas where the signal is already very strong.  Boosting the signal at times when it is already good can result in a degraded level of service, especially in 4G.  The GO Mobile has software for processing and analysing the network’s signalled messaging that is more robust at higher velocity.

There is the possibility that when the signal goes from ‘great’ to ‘very poor’ all of a sudden, there could be a delay in the GO ‘kicking’ in and result in a dropped call.

The units are all automatically set to the 3G bands when supplied to allow for calls to be made and received. The 4G/LTE bands can only be utilised for data unless both the smart phone and the local network support Voice Over LTE (VOLTE).

Difference in dB Gain

The reason for the difference in dB gain is because the mobile version no longer has the feature ‘Uplink Safe’ mode (that the current PRO models have). This feature protects the operator’s towers from excessive power in the uplink. As a result, the gain has been limited to 70dBm to prevent a GO Mobile from ever interfering with the network. For example this could be a problem if somebody drives their car within a few hundred meters of a cellular tower.

Antennas

Each model has a single outdoor antenna to receive mobile network signals, and a single indoor antenna where you need the service. Antennas need to be separated/isolated from each other for best performance.

During testing the Mobile GO worked well with 1 metre separating the antennas, where the stationary version required around 6 metres but this will be dependant on building materials and antennas used. The separation rules are not so stringent in the mobile version as the area intending to be covered is generally smaller.

Powertec provides full network design
services.
 
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