Redutelco PODRP20 User manual
-- Wide Band Repeater (Model: PODRP20)
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User Manual
User Manual
Wide Dual Band Repeater (20dBm)
REDUTELCO TECHNOLOGY CO.,LTD.
2013 January
Information in this manual is subject to change without notice
-- Wide Band Repeater (Model: PODRP20)
http:www.redutelco.com © 2009 Redutelco | All rights reserved 2
User Manual
Table of Contents
1 Description.................................................................................................3
2 Technical Specifications.............................................................................3
3 System Diagram ........................................................................................4
4 Product Features .......................................................................................5
5 Applications Example ................................................................................6
5.1 Minimum Signal Levels ....................................................................6
5.2 Custom Applications.........................................................................7
5.3 Isolation and Separation...................................................................7
6 Production Operation.................................................................................8
6.1 Notices .............................................................................................8
6.2 Installation ........................................................................................8
6.3 Commissioning.................................................................................9
NOTICE:
SWITCH AC POWER OFF BEFORE DONOR AND
SERVICE ANTENNA CONNECTS TO REPEATER.
-- Wide Band Repeater (Model: PODRP20)
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User Manual
1 Description
The wide band repeater (PODRP20) is a bi-directional amplifier used to
enhance signals between a mobile and a base station. This repeater type is
used for digital telecommunication system:
1) -It picks up the strongest signal from
BTS via the Donor Antenna,
2) -Linearly amplifies the signal and then
retransmits it via the Indoor Signal
Distribution System to the weak/blind coverage area.
3) -And the mobile signal is also amplified and retransmitted to the BTS
via the opposite direction.
It features with customized frequency band, flexible installation,
cost-effectiveness and ideal coverage solution, its output power varies from
20dBm to 23dBm.
It is applied to small, medium-size areas such as home, offices, shops, and
basements, remote countryside , and mining well etc.
This model booster is commonly used in situations where large numbers of
frequency carriers are to be repeated or when base station synthesized
frequency hopping is used.
This model booster does not separate out specific carriers but amplify and
retransmit all signals within a defined frequency band. Inter-modulation
distortion caused by band selective repeaters usually means that lower output
power per carrier can be realized compared to channel selective repeaters.
2 Technical Specifications
Band A Band B
-- Wide Band Repeater (Model: PODRP20)
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User Manual
Network(Customized) Any two bands of 800/850/900/1800/1900/2100
Gain Uplink 60±2dB 60±2dB
Downlink 65±2dB 65±2dB
Output Power Uplink 17±2dBm 17±2dBm
Downlink 20±2dBm 20±2dBm
Gain Adjust Scope MGC≥30
Gain Adjust Step 1dB
Gain Adjust precision 0～10dB/±1dB#10～20dB/±1.5dB#20～31dB/±2dB
Band Ripple ±4
ALC Scope 20dB
Frequency Error ≤±0.05
I/O Impedance 50Ω/N connector
VSWR ≤1.5
Noise figure ≤8
Spurious Emission ≤-36dBm@9KHz～1GHz/≤-30dBm@1～12.75GHz
IM3 -40dBc
Delay ≤0.5μs
Max Input Power Level(1minute) -10dBm
RF Connector N-Type (Female)
Temperature Range Operation: -25°C ~ + 55°C;Storage: -30°C ~ +60°C
Relative humidity 5~95% RH
Power consumption 50W
Power Supply AC220V
Power Supply(Customized) AC/110V±10% 60Hz
Power Supply Socket(Customized) Connector Type B
Dimension (mm) 150×120×22mm
Weight(kg) 0.9kg
Shipment Dimension (mm) 240×160×50mm
Shipment Weight(kg) 1.0 kg
Indicator
DC LED Light @ Power supply on
RUN LED Light @ Working
3 System Diagram
The RF link (donor) towards the base station is typically fed from an
outdoor antenna while the coverage area is fed by an indoor antenna
-- Wide Band Repeater (Model: PODRP20)
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User Manual
The RF link (donor) towards the base station is typically fed from an
outdoor antenna while the coverage area is fed by an indoor antenna or
connected to mobile antenna directly.
The signal from the base station is received via directly antenna, then
forwarded through a duplex filter, is amplified in a low noise amplifier (LNA),
enters the RF filter for wideband selective, and then amplified in the power
amplifier.
The output signal passes a duplex filter, before it is fed to mobile or indoor
antenna which retransmits the signal to the aim areas.
4 Product Features
High system gain>65dB, High system output power>20dBm
Light weight, small dimensions, easy to install
Easy set UL gain via local PIN switch manually to reduce interference
to BTS site. Gain adjustment step is 1dB and the adjustment scope is
30dB.
Smart Automatic Level Control (ALC) to reduce interference to BTS
Linear power amplification to effectively suppress inter-modulation
and spurious emission
An alarm interface with unique color LEDs to indicate power supply
and signal level of uplink and downlink
Simple installation with external AC/DC adapter
Dual ports and full duplex design
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User Manual
5 Applications Example
5.1 Minimum Signal Levels
It requires a minimum signal level in the place where install the donor antenna.
Failure to provide sufficient input signal will only result in a poor coverage
inside the building for this repeater system.
To check signal levels, use the phones in the place where antenna be install
(on the roof) and observe the signal bars on the phone. The Donor (outside)
antenna should be placed in the location where you get the most signal.
Notices:
1) The donor antenna should have line of sight (LOS) with the BTS antenna.
If the signal strength is adequate, LOS may in some cases not be
necessary.
2) Donor antenna gains are typically 9 to 14 dB, and have a horizontal and
vertical beam width of less than 30° to correctly select the donor BTS.
-- Wide Band Repeater (Model: PODRP20)
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User Manual
5.2 Custom Applications
If building is made of concrete, steel, steel roof, copper roof, brick, aluminum
siding, concrete roofing tiles, metal roofing tiles or any other signal stopping
material, a repeater is usually the ideal solution for your situation.
Most homes or buildings are easily covered by one repeater systems. Some
buildings are larger or have multiple areas inside that need coverage.
It may need longer cables, more than 2 coverage antennas or other items in
order to fully cover your building. We can make (almost) any cable length and
can help design a system that fits your application.
5.3 Isolation and Separation
Isolation refers to the proper distance or separation needed to keep the Donor
antenna signal pattern and the Coverage antenna signal pattern away from
each other.
-- Wide Band Repeater (Model: PODRP20)
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User Manual
Isolation becomes particularly problematic when Omni-directional antennas
are used for both the Donor and the Coverage antennas. Since these
antennas transmit in a circle (or more accurately a sphere) it is very easy for
these spheres to overlap and thus negate the repeater system.
6 Production Operation
6.1 Notices
Follow below safety items carefully before installation, implementation,
maintenance and operation for this product
)BS and MS port must be connected to donor antenna and service antenna
when powers supply on; otherwise the equipment will be damage for long
term use.
)When use repeater for outdoor, the distance between donor antenna and
service antenna must be >20metes, otherwise the repeater will be damage
because isolation problem for long term use.
)Donor antenna need to be lighting proof and lighting rod need to be install
for donor antenna installation pole outside
)Check input power, require input power less than maximum input power of
repeater, otherwise the repeater cannot work well.
)Keep clear for label and indicator on surface of repeater to be identified.
6.2 Installation
Step 1: Start by taking phone up to the roof or other location outside to find
where the signal is strongest.
Step 2: Temporarily mount the Donor (outside) antenna in that location. It
may need to adjust and move the antenna later.
Step 3: Run coaxial cable into the building to a convenient location where
you can also get standard 220VAC power for the repeater.
Step 4: Place the repeater in that location and connect the coaxial cable to
the Donor Side of the repeater and the donor antenna.
-- Wide Band Repeater (Model: PODRP20)
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User Manual
Step 5: Mount coverage (inside) antenna in a productive location. It may
need to adjust or move the antenna later.
Step 6: Connect coaxial cable between the coverage antenna and the
repeater output port.
Step 7: Power up the system and check for signal inside the building. If
needed, tune system by moving and or pointing the Donor and Coverage
antennas until get the most signal possible.
Step 8: Secure all antennas and cables, securely mount the repeater and
clean up the installation.
6.3 Commissioning
Item Description Usage
BTS Connect to Donor antenna Receive BTS signal source
MS Connect to Service antenna Retransmitted signal to target coverage area
Lo ATT Uplink attenuator (Band A) Set repeater Uplink attenuation(Low Band)
- Band A is 800M for 800/1900 dual band
- Band A is 900M for 900/1800 dual band
- Band A is 900M for 900/2100 dual band
- Band A is 1800M for 1800/2100 dual band
Hi ATT Uplink attenuator(Band B) Set repeater Uplink attenuation(High Band)
- Band B is 1900M for 800/1900 dual band
- Band B is 1800M for 900/1800 dual band
- Band B is 2100M for 900/2100 dual band
- Band B is 2100M for 1800/2100 dual band
ALM Alarm indicator LEN ON when repeater work well
After switch on power supply, please check indication LED as following items.
-- Wide Band Repeater (Model: PODRP20)
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User Manual
- You can switch attenuation value by using repeater side switch, If you want
to set attenuation 18, you push switch16 and switch 2 on.
- And set UL ATT to limited the interference to BTS in uplink direction.
)The repeater work in indoor, the indoor condition should meet environment
requirement, such as temperature, waterproof, installation space and
interference source ;
)In order to receive right BTS signal, the antenna be directly toward to
visual BTS.
)RF connectors should be link tighten;
)Use mobile signal bars to check coverage effect on site.
)For dual band repeater, if one band signal is not well, you can change the
donor antenna direction and check the change until it reach good
coverage.
)For 850/1900 dual band repeater, the donor antenna direction must be
adjustment angle by angle, so the dual band input power require good
signal at the same time , then 850 and 1900 can work with maximum
coverage area and distance.
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