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The outdoor antennas

The external panel antenna has a beam-width of 70deg so it amplifies the signal for all operators that are located 70deg around the building. The signal comes out from the front face of the white side of the antenna

The 2100Mhz and 2600Mhz antenna has a beamwidth of 30deg, and also a higher gain.

Coverage from the indoor antennas

If you have 6 green LEDs showing on the repeater, the signal from the indoor antenna will cover 30x30Mt ,(open space).

If you use the omni-directional ceiling mount antenna, the signal covers a radius of 17Mt. (This distance reduces  to 15m in dense urban cities with populations greater then 1 million )

Signal passes through non-metal doors.

The signal from the indoor antenna will not pass through a solid wall. However,  it will bounce off the walls and pass through the doors.

So, if you have a house with 2-3 floors, with solid internal walls and a concrete ceiling between the upstairs and downstairs, then you will need a 4,port repeater balaji systems.

This comes with 4 individually amplified internal antennas and is better suited for this type of house. It is also more suitable for offices.

The LEDs. (signal indicator)

You must point the external antenna in the direction of your operators tower. The 6 green LEDs measure the overall signal strength outside your house.

Check the number of  LEDs that light up. (1-6).

6 LEDs is a very good signal.

1-3 LEDs is a weak signal.

Then the repeater amplifies a clean signal and the result is that the signal from the internal antenna will cover a larger area.

The blue LED  is the uplink – the signal from the phone to the repeater. If the repeater receives a signal from inside the house ( eg. when you make a phone call), the blue LED will light up.

How to find which frequency my phone is using and therefore which repeater to buy.

Note: Make sure that 3G or 4G (mobile data) is activated on your phone.

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If you have any Android  phone, you find out which frequency you are connected to by installing the app

Network Cell Info Lite (see below)

netwrok cell info lite

On your phone, a signal strength of -100dBm is a very weak signal, -75dBm is a good signal.

Network Cell Info lite will show you your band number which is really just the frequency, see table below.

It will also show you on google maps where your operators tower is located.

Common installation mistakes.

1) People do a quick test and put the indoor and outdoor antenna in the same room. This causes feedback and the repeater will not work.

2) The external antenna is connected to the wrong side of the repeater. It should be connected as shown in the diagram below.

3) The external antenna is installed behind a steel wall or building, or in a position where it cannot receive and send a clear signal. It is best to install the antenna as high up as possible to receive a clean signal.

4) The external antenna is not orientated towards your operator. A closer operator is drowning out the signal instead. Move the antenna directly towards your operator.

Explaining the Automatic Gain Control  ( AGC) and the RED LED ( proximity control).

AGC and Proximity Control functions as follows..

If the repeater is installed within 1km of the operators mast, it will reduce the gain in 1dB steps. ( you will see ORANGE LED light up and then switch off after 4 seconds). This means the repeater is adjusting its power.

If it has to reduce it by more than 10dB, the red LED  will light up. The repeater will continue to work correctly. It is just a warning to you that the incoming signal is strong.

If it has to reduce the signal by more than 18dB, the red LED will flash and the repeater will shut down. (This will happen if you are around 100Mt from an operators mast).  You can turn the external antenna or attach an attenuator to reduce the incoming signal.

If you see the red LED on permanently and only 1-3 green LEDs on (see below), you have feed-back. You need to create more separation between the outdoor and indoor antenna. Please ensure that there is at least one solid block wall separating both antennas.

If you have a question about the red LED, please  contact us