The BT20-CT4 version is useful for OUTDOOR installation like hill areas, small valleys, countryside, resorts etc. Itʼs required: - good signal level on input side; - efficient shielding condition between input and output antennas, otherwise the system cannot operate and makes oscillations, with possible interferences on operator traffic. After installation, verify the correct operating with spectrum analyzer instrument. Available several cascade systems. Installation only by qualified and authorized personnel. To obtain a good shielding between input and output, we suggest to use EXTENSION COAX CABLES PR10- 20-33 available on option.
Electromagnetic Field reduction
The using of MICROSET repeaters decreases drastically the hand-set telephone output power, saving battery life and avoiding dangerous expositions to electromagnetic fields (MICROSET patent)
Capacity channels and operating field coverage
BT20 basic model has European test approval for 10 communications also from different operators; but it is a wide band system so that, with favourable signal and environmental conditions, it can support rather unlimited number of communications.
Indoor coverage
With good level of outside signal it is possible reaching for inside coverage up to 10.000 square meters (33.000 square feet) on 900MHz band.
PATENT PENDING ALL RIGHTS RESERVED.
Mod. BT20-CT4
GSM 900MHz Outdoor installation
SINGLE PROVIDER - OUTDOOR INSTALLATION
WIDE COVERAGE ANGLE (up to 180°)
WARNING: INPUT MUST BE SHIELDED FROM OUTPUT SIDE, IF NOT IT DOESNʼT WORK
USEFUL FOR:
SMALL VALLEYS
COUNTRYSIDE
RESORTS
Kit BT20-CT4 delivery parts:
two input hi-gain directional antennas LOG10
two output hi-gain collinear antennas CT4 for wide coverage (up to 180°)
10mt coax cables with assembled connectors
mast preamplifier
main amplifier
switching power supply 230VAC.
TECHNICAL SPECIFICATIONS
DOWN LINK: Frequency 935-960 MHz / Gain 90dB
UP LINK: Frequency 890-925 MHz / Gain 60dB
INPUT LEVEL: -55dBm max
INTERMODULATION: better than -36dBm
SPURIOUS: -55dBm span 2MHz bw 30KHz
HARMONICS: better than -36dBm up to 12,5 GHz
OUTPUT POWER: +10dBm +/- 2dB (low power device)
OPERATIN FIELD COVERAGE: 5000-10000 m2 with favorable field and signal conditions
OPERATING: linear class A
GAIN LINEARITY: +/- 2dB at 50 dB variation
CAPACITY CHANNELS: 10 communications recommended, 20-30 with good signal levels, 2 with low signal
WIDE BAND SYSTEM
INPUT/OUTPUT IMPEDANCE: 50 Ohm
CONNECTORS: TNC female
POWER SUPPLY: +10 VDC (limit 9-14 VDC) - 0.4A
ENVIROMENT: -15° +45°C (limit -15° +50°C)
HUMIDITY: 85% not condensate
INSTALLATION: indoor (main amplifier)
APPLIED STANDARDS: EN 60950-2000, ETSI EN300609-4, ETSI EN 301489-1
TEST APPROVAL: CE 0523(!)
