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This tool will identify the optimum location for the outdoor antenna. The “Position” fields will
automatically populate with the dB measurement from various locations by clicking on the
measure button at each possible location. You can test up to 5 positions. Once you have
entered all locations, click on the “Compare” button to find the best location. Keep in mind that
a signal of less than -65 dB can over-power the booster. Aim for a range of -60 to -80 dB. The
signal strength can be adjusted to a weaker signal by:
• Moving the outside antenna to a different location
• Adding an inline attenuator to the cable connecting to the booster
• Lowering the dB gain with the DIP switches on the booster or through the Attenuation
column in the Sentry
Configure Gain Settings
Attenuation:
If the “Over Power” alert is red, the signal coming into the booster from the cellular tower is too
strong which will shut down the affected band. There are three possible solutions:
1. Add an inline 5 dB or 10 dB attenuator (parts: SC-ATNR-5 and SC-ATNR-10) to the cable
coming into the booster.
2. Relocate the outdoor antenna to a location where the signal is weaker. Or, If using a Yagi
outside antenna, turn in small increments away from cell tower until Red alert is resolved.
3. Lower the dB gain in small increments on the Sentry booster dashboard under the
Attenuation column until the Over Power alert is resolved.
ATTENUATION THROUGH CLIENT SOFTWARE IS
CUMULATIVE WITH THAT OF DIP SWITCHES.
Sentry Operation
