b. INSTALLATION PROCEDURE
Description of DA4000SBR System
The DA4000SBR Dual Band Wireless Amplifier/Repeater system provides cellular
signal coverage to areas that have low signal strength to adequately operate a cellular
phone. In these poor coverage areas it becomes difficult to place or receive calls and
usually results in a dropped call. The DA4000SBR dual band amplifier/repeater system
provides increased reception indoors by filtering, re-directing and amplifying the
available signal. This translates into fewer dropped calls, safe, clear connections and
stronger signals. The DA4000SBR dual band system operates with all carriers in the USA
and Canada except Nextel. A Nextel companion unit is under development.
Functional Operation of DA4000SBR System
Installation requirement: Separation Distance of 20' or more between outside and inside antennas
Cell Site
P/N 288-PB
Outside
Antenna
P/N C277-30
30' Cable
P/N 135-RD
Inside Antenna
P/N DA4000SBR
Amplifier/Repeater Unit
Cell Signal -90 to -70 dBm
Cell Signal degraded
by exterior wall, distance
trees & foliage, etc....
Cell Signal re-broadcasted
inside building through
DA4000SBR system
The DA4000SBR system contains a dual band low power indoor antenna,
amplifier/repeater unit and high gain omni-directional outdoor antenna. Both antennas
must be installed and operate in a vertical position. The indoor antenna must be used with
cable and stand. The outdoor omni-directional antenna, P/N 288-PB, is installed outside
of the building. (see specific section for Home/Office, marine and RV installations) The
omni-directional antenna should be installed on the side of the building with the strongest
cellular signal as indicated by the bars on the cell phone. The outside antenna must be
installed outside of the building, RV or boat. The inside antenna must be mounted in a
central location in the building that is 20’ or greater from the outside antenna. The inside
and outside antenna also must be separated by an exterior wall. Two power supplies are
included to maximize installation flexibility.
Typical In-Building Coverage
The DA4000SBR system is designed to provide optimal coverage for a 3,000 ft
2
to 5,000
ft
2
area. Interior coverage varies based upon the building construction and materials.
Typically the DA4000SBR system will penetrate 1-2 interior walls and 1 floor based
upon construction material.
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