Here is a simple instruction manual/ Mobile Signal Booster Installation Guide, which is the same setup for all signal boosters. Follow this guide and your mobile signal reception inside your building will go from 1 – 5 bars instantly.
Position the external antenna up high where you have got a full 4/5 bar signal (use a mobile phone as the indicator). If you have a 2/3 bar you must purchase the extra Yagi antenna as this takes a weaker signal better to the repeater to get the gain inside).
Screw fix cable to the external antenna to the port that says BTS port on the amplifier. This will require drilling a 25mm hole. You can purchase a window jumper that allows you to bring the cable into the building without drilling.
Make sure that the antennas are at full length apart from the cable and ideally a wall separation between the antennas. Please make sure there are no kinks in the cable as this causes interference.
Fix the internal cable to the internal Omni direction antenna or screw fix the whip antenna to the port that says USER on the amplifier.
Connect the power, switch it on and the signal will be amplified to 5 bars. If no improvement, move the external antenna into a different position, as this is the most fundamental part of the operation.
If your mobile signal decreases then move the antennas further apart as there is interference being caused. If you’re not using the Booster it’s advised to turn off the Boosters.
Install as per the instructions given above in this mobile signal booster installation guide for maximum gain. Trial and error are allowed. Always use your mobile phone as the Indicator for finding the best signal.