SureCall | 48346 Milmont Drive, Fremont CA 94538 | 1-888-365-6283 | [email protected]
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Installing Your Hardware
Step 1. Find the area with the Strongest Signal
The signal booster requires a minimum cellular signal of low –100 dBm. Signal readings
usually appear as a negative number (for example, -85). The more bars you get, the
closer the dB gets to zero. Aim for a signal close to -65dB. Signals stronger than -50dB
may cause the booster to shut down (see the graph below). If you have an omni outside
antenna and your signal is too weak you may need a yagi antenna, which can be aimed
at the closest antenna tower. Before installing the outside antenna, find the area with the
strongest cellular signal source from your service provider by following the directions
below.
Measure the strength of the existing cellular signal in various locations.
• Apple iPhones: Dial *3001#12345#* and press Call. In the top-left corner, a dB number appears instead of bars.
• Android devices: download apps such as “Network Signal Info” in the Google Play store to measure signal
strength. Search check real signal strength to find other cell signal measurement apps.
• Internet: go to www.speedtest.net to test 3G and 4G data rates.
2. Select a location away from buildings, walls, trees, hills, and other terrain features that can block
or reflect wireless signals (12-inch clear radius is recommended).
Note:
Where you install your outside antenna in relation to the carrier’s cell phone tower also determines signal strength. Although cell phone
carriers try to place towers for maximum coverage, local ordinances and terrain features can restrict tower locations, which can limit signal
strength at your location.
Cell
Tower
Outside
Antenna
Signal Strength
-50dB
-60dB
-70dB
-80dB
-90dB
-100dB
-110dB
Excellent
Good
Poor
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https://www.signalbooster.com | 1-855-846-2654 | [email protected]
