Tetra Band Selective Signal Repeater Bda

• Customization: Available
• Type: Signal Repeater
• Transmission Medium: Cable
• Model NO.: ET-CRT40BS-F
• Standard: Standard
• Lightning Protection: With Lightning Protection
• Certification: ISO
• Condition: New
• Outpower: 10watt
• Gain: 90dB
• Band: CDMA/GSM/3G/4G/Tetra/Iden
• Work Environment: Outdoor
• Transport Package: Conton or Wooden Case
• Specification: CE, ROHS
• Trademark: etenda
• Origin: Shenzhen
• HS Code: 8517611010
• Production Capacity: 500PCS/Month

Product Description

Tetra Band Selective Signal Repeater BDA

We can also make other band repeater as customer,feel free to contact us for your requirement!

Introduction

RF Repeater is designed to enhance cellular network coverage and fill blind spots. Main operation of the repeater is to receive low-power signal from Base Station (BS) via radio frequency (RF) transmission by its donor antenna,process, amplify and forward the signal to Mobile Station (MS) in target coverage area by its service antenna.

Features

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

2.High out band rejection, excellent intermodulation and spurious emissions;

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

4.Adopting cavity filter with highly selectivity and low insertion loss eliminates interference between uplink and downlink;

5.High linearity PA; high system gain;

6.Allowing for continuous gain adjustment 31dB by 1dB step;

7.Local and remote monitoring with automatic fault alarm.


RF Repeater Typical Application




Specifications

		Uplink	Downlink
Working Frequency	Tetra380	380 ~ 385 MHz	390 ~ 395 MHz
	Tetra400	400 ~ 405 MHz	410 ~ 415 MHz
	Tetra420	415 ~ 420 MHz	425 ~ 430 MHz
	CDMA450 C	450 ~ 455 MHz	460 ~ 465 MHz
	CDMA450 A	452.5 ~ 457.5 MHz	462.5 ~ 467.5 MHz
	Tetra480	480 ~ 485 MHz	490 ~ 495 MHz
	VHF	136 ~ 174 MHz	136 ~ 174 MHz
	IDEN	806 ~ 821 MHz	851 ~ 866 MHz
	Others	as customized
Output Power		27/30/33/37/40dBm	33/37/40/43/46dBm
Gain		80dB	80-95dB
Downlink to Uplink Separation		3Mhz min
MGC		≥ 31dB / 1dB step
VSWR		≤1.5:1
In band flatness		≤3dB
Three order intermodulation		≤-45dBc
Gain adjustment accuracy		0-10dB≤1dB
		10-20dB≤1dB
		20-30dB≤1.5dB
System Delay		≤5dB
Rejection band	Fo±0.4MHz	≤-25dBm
	Fo±0.6MHz	≤-35dBm
	Fo±1MHz	≤-48dBm
Spurious Emission		9KHz~150KHz≤-36dBm/10KHz
		150KHz~30MHz≤-36dBm/100KHz
		30MHz~1GHz≤-36dBm/100KHz
		1GHz-12.75GHz≤-30dBm/1MKHz
Noise Figure		≤5dB
I/O Impedance		50Ω
RF Connector		N-Type (Female)
Reliability		To the GB6993-86 standard
Electromagnetic compatibility		To the ETS200300 694-4 standrd
Power		AC110V or AC220V
Temperature Range		-25ºC~+65ºC
Humidity		≤95%
Size		less than 660x410x200mm
Weight		30-35kg

Working principle:

When the repeat antenna receives uplink signals from a subscriber, the signals will undergo processing of low-noise amplifier, filter and power amplifier first, and then be transmitted to the base station, thus accomplishing connection between subscribers in signal blind area and base station.

In this way, the blind areas are eliminated.

Considering receiving signal intensity and coverage size may vary with sites where repeater is located, it is necessary to control the gain and output of the repeater.

Additionally, considering the fading effect in spatial signal transmission, auto amplitude fixing for output is required.

For this purpose, MGC and ALC circuits are included in the uplink/downlink channels.