Smartcoverage RF repeater User Manual - page 4
Isolation and separation of antennas, refer to the minimum distance required ( 5-8 meters, depending on the
building property) separating the external antenna ( Yagi ) from the indoor antenna ( panel or ceiling ) for not to
cause self-oscilation of the RF repeater. This can easily be done by positioning the two antennas ( indoor and
outdoor) one-under-side and back-to-back, as the sketch above.
After completing the above work, and have identified the best direction for signal reception, you can fit the antenna
but not definitive because it might need to make some adjustments after installing the indoor antenna and the
repeater.
Antenna isolation chart with at least 1 wall separation
Repeater model
Frequency
Min. vertical distance
ST900A-mini GSM
900Mhz
3 meters
ST 950
900Mhz
3.5 meters
ST 960
900Mhz
4.5 meters
ST 970
900Mhz
5.5 meters
ST 980
900Mhz
7 meters
ST 990
900Mhz
10 meters
Repeater installation
Fasten the device with 4 M4 screws. Make sure the selected location is dry, with access at the power supply and
away from high temperature or a heat source.
Check the cables are not bottleneck in the corners, not cracked, and the connectors are well crimped.
Very careful in handling the connectors - Do not pull or unscrew !
Indoor antenna installation
Anyone who wants to improve the signal coverage in a specific area, is obliged to inform the network operator
that is subscribed, to solve the problem, or to appeal to companies accredited by telecom operators.
For an efficient functioning of the system, adequate placing of the indoor antenna is essential. Incorrect
installation can lead to self-oscillations in the system.
It is important to work with care and attention when installing the indoor antenna in a good position, and
isolated from the external antenna.
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Place the indoor antenna where you want, but test the signal distribution all over the room ( using your
measuring device or mobile phone )
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Adjust the indoor antenna to a reasonable signal distribution in the room
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If not satisfied with the signal distribution, reposition the indoor antenna
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When you have completed the positioning of the indoor antenna, use the mounting bracket
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Indoor antenna is positioned perpendicular to the ground, vertical on the wall and must be placed at
least 1.60m to 1.80m height from the ground, and inclined forward
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In order to reduce loses and increase the indoor coverage when installed, the cable should be as short as
possible
Coverage increases when changing the antennas with higher gain but can change the operating mode of the
repeater.