Bird Technologies Group 26076 Manual De Usuario

Signal boosters extend radio coverage into areas
where abrupt propagation losses prevent reliable
communication. This system receives an RF sig-
nal, raises its power level, and couples it to an
antenna or leaky (radiating) coaxial cable system
so that it can be re-radiated. No frequency transla-
tion (conversion) occurs with this device. The two-
way SBII+ signal booster is a broadband, bidirec-
tional, dual branch (uplink and downlink) system.
The booster transmits into a distributed antenna

system (DAS) for downlink output signals and a
Donor antenna for uplink output signals. The Bird
Technologies SBII+ signal booster, an industrial,
Class-B, signal booster is designed to operate in
the UHF, 700, and 800 MHz public safety band. 

The system is based on a modular design that is
bi-directional with one uplink and one downlink
branch in the module. The module is the core of
the product and may or may not have ancillary
assemblies such as filters, duplexers, or isolators

Power Supply

Assembly

Backup

DC Power

Filter

SBII+

Class B SB

Module

Front Door

Alarm Status LED

Duplexers

AC

On/Off
Switch

Backup DC Power

On/Off
Switch

Alarm Form-C

contact terminals

and Backup DC

Power terminals

on back of this 

drop down plate

Figure 1: SBII+ booster system in a typical clam-shell cabinet enclosure.

(800 MHz unit shown as an example)