Digital Tetra Channel Selective Repeater

• Type: Signal Repeater
• Transmission Medium: Wireless
• Standard: Standard
• Lightning Protection: With Lightning Protection
• Certification: ISO, RoHS, CE
• Condition: New
• Model NO.: ET-CRT40CS-F
• Weight: 30kg
• Inter-Modulation: <-45dbc
• Supply Power: 110/220VAC
• RF Connector: N-F
• Channel Width: 25/12.5kHz
• Channel Number: 16
• Mgc: >31dB
• Group Delay: <5us
• in Band Flatness: <3dB
• Vswr: <1.5
• Noise Figure: <5dB
• Output Power: 30/33/37/40/43/46dBm
• Transport Package: Carton or Wooden Case
• Specification: CE, ROHS
• Trademark: etenda
• Origin: Shenzhen
• HS Code: 8517611010
• Production Capacity: 500PCS/Month

Product Description

Digital Tetra Channel Selective Repeater


Technical Features

1.Aluminum alloy enclosure for excellent heat dissipation,waterproof design for all-weather installation;

2.Digital signal processing based technology, excellent intermodulation and spurious emissions;

3.Modules structure,Multi-duplexer,two ports design,and built-in power supply,easy for maintenance and installation;

4.Software programmable channel number or band selective frequency operation,also can close or open any channel by channel Switch if you need;

5.High linearity PA; high system gain. 

RF Specifications

Item			Specification
			Up-Link	Down-Link
Frequency range			136 - 174 Mhz	136 - 174 Mhz
			350 - 520 Mhz	350 - 520 Mhz
			806 - 821Mhz	851 - 866Mhz
			Customized	Customized
Gain			80-95dB
Channel number			16
Channel Width			12.5Khz or 25Khz
MGC			≥31dB/1dB step
Gain control range			0-31dB
RF output power			30-37dBm	30-46dBm
Noise Figure			≤5dB
Group Delay			≤5us
VSWR			≤1.5
Intermodulation attenuation			≤-45dBc
In band Flatness			≤3dB
Spurious emission		9kHz-1GHz	≤-36dBm
		1GHz-12.75GHz	≤-30dBm
RF Connectors			N - female
Impedance			50 Ohms
Power supply			110/220VAC
Dimension(mm)			580*380*240mm
Weight(Kg)			30kg
Working Temperature			-25--+65degree
Humidity			≤95%
Enclosure Protection			IP65
Monitor interface			RS485/RS232 or customized
Remote control			GSM SMS modem or GPRS modem or Ethernet

Working principle:



The BS downlink signal enters the BS side duplexer after space transmission. After the amplification through low noise amplifier, the downlink signal will into the digital channel selective module which will only chose the channel have set ,the downlink signal will be amplified to some certain power by PA and transferred to MS side service antenna through MS side duplexer. Up till now, the coverage of downlink signal has finished. The theory of uplink cable line is similar with the downlink cable line.
The control unit provides various parameters such ash channel number and quantity, Gain and power levels for all the modules and controls them as well. The power module provides corresponding voltage for all the modules.