Choosing the right spot is key to stable antenna performance. The best position isn't always the easiest. Instead, base your choice on signal measurements—specifically RSRP—and the direction of the nearest base station.
 
Step 1: Get familiar with RSRP testing tools
 
Before installing your antenna, prepare a tool that can help you check the RSRP value around your home or building. RSRP stands for Reference Signal Received Power, and it is commonly used to measure the strength of a cellular signal.
 
For Android phones, you can use apps such as LTE Discovery, Network Cell Info Lite, or similar network testing tools. These apps can help you view signal information from nearby cell towers. For iPhone users, you can dial *3001#12345#* to enter Field Test Mode and check cellular signal data.
 
Make sure your phone is on the same carrier network your router will use. This ensures your test results reflect the actual environment.  

              

   Iphone RSRP Screen                                 Android LTE Discovery App

 
 
 
Step 2: Understand your RSRP readings
 
RSRP is usually shown as a negative number, with “dBm” as the unit. Since it is a negative value, the number closer to zero means a stronger signal. For example, -90 dBm is better than -100 dBm, and -100 dBm is better than -110 dBm.
 
A stronger RSRP means your device gets a clearer signal. This helps keep your connection stable and reduces drops, giving you better overall performance.
 
When checking the signal, do not rely on only one reading. Signal values may change slightly due to movement, weather, obstacles, or network conditions. It is better to observe the value for a short period and compare the average readings from different locations.

 

Step 3: Find the highest RSRP location around your home
 
After you understand how to read the RSRP value, walk around your home or building and test several possible installation points. These may include windows, exterior walls, balconies, roof edges, corners of the building, or other outdoor mounting positions.
 
At each location, hold the phone steadily for a short time and record the RSRP value. If possible, also pay attention to the direction of the nearest base station, because the antenna should ideally face the signal source with fewer obstacles in between.
 
Compare your results and pick the spot with the best RSRP. For instance, -94 dBm is much better than -113 dBm. The goal is to lock in the strongest, most stable signal before you start drilling.
 
Step 4: Install the antenna at the best RSRP location
 
Once you find the location with the highest RSRP value, use that position as the preferred installation point for your antenna. The antenna should be mounted where the signal is strongest, not simply where installation is the easiest.
 
Don't just pick a spot because it's close to the router or easy to drill into. Convenient spots often suffer from weak signals due to walls, metal, trees, or other obstructions.
 
After mounting the antenna, adjust its direction carefully and check the signal again. Small changes in angle or position may affect the RSRP reading. The final goal is to keep the antenna installed at a location and direction that provide the strongest and most stable signal.
 
Step 5: Watch the full video demonstration
 
The steps above provide a basic method for selecting the best antenna installation location. For a clearer understanding, please refer to the full video demonstration below.
 
The video shows how to compare signal readings in different positions and explains why the antenna should be installed based on measured RSRP values instead of convenience. This process can help users make a more accurate installation decision and improve the real-world performance of the antenna.
 
Detailed Demonstration Please refer to the videos below (Courtesy of Saverio Cirillo)
English: https://www.youtube.com/watch?v=ZCpOK2b5MYs
Italian: https://www.youtube.com/watch?v=9jXksq4fYws
Germany：https://youtu.be/iOwktiN0GkE
French：https://youtu.be/DIA6UX_cXkw
Spanish：https://youtu.be/W4d07UfSkl0