Bird Technologies 429-83H-01-RD User Manual
Rapid Deployment
Tower Top Amplier
429-83H-01-RD Series
Designed to enhance the operation of the temporary base station, the Rapid Deployment TTA will
increase the receive sensitivity, often in excess of 10 dB, and can make up for the imbalance between
mobile and handheld users. Often in emergency situations, any increase in “talk back” range can
make the difference in mission critical communications.
The TTA system consists of two components: the Tower-Top Amplifier mounted close to the antenna
and a Receiver Multicoupler base unit. The lightweight and rugged TTA is designed to reduce wind
loading on mobile communications tower systems. In addition, the rapidly deployable package
ensures quick and reliable communications in emergency situations. To reduce the size of the TTA
and simultaneously provide 120 dB of isolation of a TX carrier, filtering has been split between the
TTA and Receive Multicoupler base unit.
FEATURES
Quadrature-coupled low noise amplier (LNA) improves RX sensititvity
PolyPhaserTM impulse suppressors provide protection from
lightning damage
High performance ltering in tower top and base deck
RF bypass if DC power is interrupted
Reduced wind loading with round TTA enclosure
Quick installation
Compact, light weight, weather-resistant enclosure
One rack-unit high Receiver Multicoupler (MCU)
TX RX Systems Brand
IDEAL FOR:
} Temporary Basestations
} Transportable Command Centers
} Rapid Deployment Stations
Rapid Deployment Tower Top Amplier
429-83H-01-RD Series
TowerTop_42983H01RD-05232013
30303 Aurora Rd. Solon, OH 44139 866.695.4569 www.bird-technologies.com
TOWER TOP AMPLIFIER SPECIFICATIONS
Frequency Range 792-824 MHz
Net Gain 23 dB
Noise Figure (Typ./Max) 2.7 dB / 3.0 dB
Preselector Type 7-pole bandpass with cross-coupling
Loss <0.8 dB
Rejection >60 dB @ 776 and 851 MHz
LNA Type 2-stage Quadrature integrated into lter
Gain 26 dB
Noise Figure 1.2 dB
3rd Order Input IP +18 dBm
Impedance 50 ohms
Antenna Port VSWR 2 :1
Power Requirements 12 VDC @ 0.65 A
Lightning Protection Impulse Suppressor on antenna port
Operating Temp Range -30°C to +60°C
Enclosure Aluminum canister foot mounting tabs
Connectors N-Female
Dimensions
(not including mounting
tabs or connectors)
15” long x 6” diameter
Net Weight 13.1 lbs
BASE UNIT SPECIFICATIONS MULTICOUPLER UNIT (MCU)
Frequency Range 792-824 MHz
Multicoupler Net Gain -10 dB
Number of outputs 8
Impedance 50 ohms
VSWR < 2:1
Connectors:
To T TA
To BT S
N - female
BNC - female
Power Requirements 90-240 VAC 50/60 Hz
180 mA @ 120 V
(current draw is for base deck only).
Operating Temperature
Range: at non-condensing
humidity
0°C to +50°C
Enclosure Standard EIA 19” Rack Mounting
Dimensions (HWD) 1 RU x 19” x 14” (38 x 483 x 356 mm)
Net Weight 7.55 lbs
Optional Filters
Rack-mounted narrow band lters to further limit the multicoupler bandwidth. Optional lters are
available to provide a narrower window ahead of the receiver multicoupler in order to achieve better
selectivity for the system.
MODEL NUMBERS DESCRIPTION
89-83F-02-03 792-806 MHz, 3 MHz Bandwidth Preselector
89-83F-02-06 792-806 MHz, 6 MHz Bandwidth Preselector
89-83F-02-09 792-806 MHz, 9 MHz Bandwidth Preselector
89-83F-02-14 792-806 MHz, 14 MHz Bandwidth Preselector
89-86A-02-03 806-824 MHz, 3 MHz Bandwidth Preselector
89-86A-02-05 806-824 MHz, 5 MHz Bandwidth Preselector
89-86A-02-10 806-824 MHz, 10 MHz Bandwidth Preselector
89-86A-02-15 806-824 MHz, 15 MHz Bandwidth Preselector
Please specify sub-band frequency when ordering
SYSTEM SPECIFICATIONS
Bandwidth 792-824 MHz
System Noise Figure 2.9 dB Typ, 3.5dB Max
3rd Order IIP > 15 dBm
Rejection 110 dB min, 120 dB nominal
at 776 and 851 MHz
Net Weight 20.6 lbs.
FREQUENCY (MHz)
ATTENUATION (dB)
Combined Tower Top and Base Deck Filter Response
A steep skirted TEM bandpass lter in the tower box augmented by a
ceramic lter in the base unit provide a selective 32 MHz system window.
+50.00
+40.00
+30.00
+20.00
+10.00
+0.000
-10.00
-20.00
-30.00
-40.00
-50.00
Model Numbers Description Power Requirements
429-83H-01-RD TTA, Includes RX MultiCoupler 792-824 MHz, 8 Channel Rapid Deployment AC
429-83H-01-RD-16 TTA, Includes RX MultiCoupler 792-824 MHz, 16 Channel Rapid Deployment AC
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