For the optimal functioning of the booster, the BS (input) readings should be between - 65 and 50 dBm. The MS (output
power) readings must be b05 and +15 dBm. Device Gain must be 65/65 dB. If the BS is lower than - 65dBm, the
coverage will be smaller. However, the device can work normally. If the BS is too weak, it'll be necessary to adjust the
position of the outdoor antenna by raising it as high as possible (on a pole on the rooftop) and pointing it towards the
provider's nearest base station. If the BS is higher than - 50 dBm, the device will have a self-excitation issue. In those
conditions, the output signal will drop during communications. If the two antennas are placed very close to each
other, it will evoke self-excitation. To fix the problem, you would need to place the outdoor antenna at the largest
possible distance from the indoor antenna.
In case of installation errors an exclamation point/arrow appears on the LCD screen. It happens in two cases:
1. Input signals (external BS) are weak.
It can happen that even with a weak signal the amplifier works well. In this case, nothing should be done.
Just ignore a flashing exclamation point. However, if the indoor coverage is still very low, it will be
necessary to adjust the position of the outdoor antenna so that it can pick up a stronger signal. For that,
try 3 possible solutions:
Solution 1. Direct the outdoor antenna to provider’s nearest base station.
Solution 2. Change the position of the outdoor antenna. Try to put it as high as possible.
Solution 3. Reinstall the outdoor antenna trying to avoid obstacles between the antenna and provider’s
base station.
2. The separation between the two antennas (outside and inside) is not sufficient.
This can cause interference between antennas and, as a result, the device will reduce the device gain. The
output signals will, therefore, be very weak. To avoid the risks of this type of malfunction, make sure not to
put the 2 antennas too close to each other, (D = 10-20 m) and never to orient them face to face, ideal would
also be that they are not in direct vision (use of a mineral or metallic obstacle, wall, ceiling, slab, etc.), and
they aim opposite directions, or at least frankly different.
Does my signal booster work if its LCD screen is switched off? What does Sleep mode mean?
The signal booster enters into Sleep mode only when you don’t use it. During Sleep mode only the LCD display turns
off, while the amplification system keeps on functioning. This function allows saving energy. In case you need to see
information on the screen, just push any button.
Can I use 1 indoor antenna if I don’t need 2?
Yes, you can use only 1 indoor antenna if the distance between both indoor antennas in your case cannot exceed 5m.
However, if you can install the indoor antennas at the distance exceeding 5m or create some obstacles like walls
between them, we recommend you using 2 indoor antennas for more effective signal distribution and larger coverage.
7.4. System Test
7.4.1. Check whether the coverage is good
1. Take a test with a mobile phone or a data card (engineering mobile phone is preferred).
To test signal level with a cell phone, make use of its engineering mode (Field Test Mode), which is an
application available in free access or a phone mode requiring no extra setups. On most used mobile OS
(operating systems) the test mode can be started as follows:
Summary of Contents for LCD-300GD
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