VHF-UHF Bi-Directional Amplifier Installation and Users Guide
Installation Guidelines: 4.3 Indoor Antenna Installation Guidelines
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4.3 Indoor Antenna Installation Guidelines
Use omnidirectional antennas (see section 2.4. Optional Accessories) indoors
and locate them centrally with respect to the intended coverage area to
minimize signal leakage to the outside. Only use directional antennas indoors
in special cases when higher gain and directionality would be helpful and RF
exposure limits will not be exceeded.
To avoid Signal Booster uplink overload and gain limiting, mount the indoor
antennas away from areas where mobile subscribers frequently use their
radios, fire alarm control rooms, or dispatch areas.
Note:
If the signal level from antenna at the UL service port is >-12dBm, add
external attenuation to avoid shutdown alarm.
To determine the quantity and locations of indoor antennas, measure
Received Signal Strength Indication (RSSI) to determine areas of weak
signals. These are the approximate areas where indoor antennas may be
needed.
Be aware that the signal from an indoor antenna, in most cases, can be
expected to penetrate approximately four standard sheet rock walls to reach
users. If the signal must travel through more than two walls, or if the walls are
made of materials other than sheet rock, it may be necessary to split the
available signal and add more antennas.
