435 Series, Mini Tower Top Amplifier System (TTA) is designed to enhance the operation of the base station. The TTA increases receive sensitivity, reduces transmit signal interference and can make all 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. 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.
The tower mounted unit is housed in a compact light weight, weather resistant enclosure. The internal electronic components are protected from lightning by surge arresters on all RF ports. The system is designed for quick and simple installation.
Industry leading TTA amplifier linearity guarantees superior immunity to intermodulation interference.
- Quadrature-coupled low noise amplifier (LNA) improves RX sensitivity.
- PolyPhaser™ impulse suppressors provide protection from lightning damage.
- High performance filtering in tower top and base control unit.
- Wind loading is reduced due to small enclosure size.
- Quick installation.
- Compact, light weight, weather-resistant enclosure.
- One rack-unit high 8-Port Receiver Multicoupler (MCU).
The TTA is designed to increase the performance of a Base Transceiver Station (BTS) while ensuring reliable communications for critical Public Safety applications. This increase in sensitivity can make up for the imbalance between mobile and handheld users in critical systems.
|Model Number||Description||Power Required|
|435-83H-01-T||TTA, Mini Quadrature Single Amp, 792-824 MHz, Single Network, Tower Box|
|435-83H-01-M-110||Multicoupler Unit (MCU), 8-Port, 792-824 MHz||AC|
|435-83H-01-M-48||Multicoupler Unit (MCU), 8-Port, 792-824 MHz||-48|
|435-94D-01-T||TTA, Mini Quadrature Single Amp, 896-902 MHz, Single Network, Tower Box|
|435-94D-01-M-110||Multicoupler Unit (MCU), 8-Port, >896-902 MHz||AC|
|435-94D-01-M-48||Multicoupler Unit (MCU), 8-Port, >896-902 MHz||-48|
Tower Top Amplifier will function up to 70°C without shutting down however, the specifications are not guaranteed outside the rated temperature range. MCU specifications values are typical unless noted otherwise.
- TTA = Tower To Amplifier
- MCU = Multicoupler Unit
#Note: See the datasheet for Optional Products
|Item No||435 Series|
|Item Name||Mini Tower Top Amplifier System|
|Frequency Band||700/800 MHz, 900 MHz|
|Reserve Gain||Configurable by Electronic Attenuator|
|Rejection||120 dB nominal at 776 and 851 MHz|
|Total Power Dissipation||17 W|
|System Noise Figure||3.2 db (typ.)|
|TTA---Frequency Band||700/800 MHz: 792-824 MHz
900 MHz: 896-902 MHz
|TTA---Type of Amplifier||Quadrature Coupled|
|TTA Gain---Input to output of TTA||+23 dB (typ.)|
|TTA---Noise Figure||2.9 dB (typ.)|
|TTA---LNA OIP3||> 42 dBm (typ.)|
|TTA---Return Loss of all RF Ports||> 14 dB|
|TTA---Power Requirements||Power derived from Rx Cable|
|TTA----Operating Temperature Range||-30° C to 60° C|
|TTA---Lightning Protection||Impulse suppressor on all external ports|
|TTA---Test Port Included||Yes|
|TTA---Coupling Test Port--Test In-Amp In||30 dB|
|TTA---50 Ohm Termination Test||Controlled by base unit|
|TTA---Bypass Test Mode||Controlled by base unit|
|TTA---Enclosure||Weather resistant housing designed to NEMA Standards|
|TTA---Dimensions H x W x D||8.65” x 5.77” x 6.04”|
|TTA---Net Weight||10 lbs.|
|MCU---Frequency Bands||792-824 MHz, 896-902 MHz|
|MCU---Net Gain or Loss--RMC In to RX Out||+1 dB minimum|
|MCU---Number of Outputs Ports||8 expandable to 16|
|MCU---RX-RX Port Isolation||>20 dB (min.)|
|MCU---Test Port Input||BNC - Female (Front of RMC)|
|MCU---Test Port Output||N - Female (Rear of RMC)|
|MCU---Reserve Gain Electronic Attenuator||0-15 dB in 1 dB steps|
|MCU---Alarm Contacts||Form-C Contacts|
|MCU---Power Requirements||90-240 Vac @ 50/60 Hz or -48 VDC|
|MCU---Operating Temperature||0° C to +50° C|
|MCU---Enclosure||Standard EIA 19” Rack Mount|
|MCU---Dimensions H x W x D||1 RU x 19” x 14”|