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.
System Test
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:
◦
iOS. Type *3001#12345#* and hit Call
◦
Android. Type *#*#197328640#*#* to activate
◦
Windows. Type ##3282# and start.
◦
Blackberry. Press TOOLS, SETTINGS, STATUS or OPTIONS, STATUS.
Note! To get parameters for 2G, 3G and LTE, disable WiFi. In case you cannot find Field Test Mode on your cell phone,
use bars on the screen of your mobile phone to evaluate the change.
If the signals in most areas have not been improved, please check recommendations below again:
- Weak input signal leads to low output power. To increase input signal power level, change the direction of the outdoor
antenna or its installation position or replace it for an antenna with higher gain.
- Check whether it is necessary to use additional indoor antennas as barriers block signal penetration; also check
whether the repeater’s power is enough; please install extra indoor antennas or replace the repeater for another model
with higher power level.
2. If the signals in small parts of the area have not been improved, please check the following:
- Check whether the indoor antenna is installed correctly or not; you may try to change the antenna location to improve
coverage.
- Check if it is necessary to adjust the direction of the indoor antenna.
- Check whether it is necessary to add one or more antennas to enhance the coverage in special areas.
