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Cdma In-band Frequency Shift Repeater Fsr Is Designed To Solve Problems Of Weak Mobile Signal

Posted at: Offers to Sell and Export | Posted on: Wed 27 Aug, 2008 3:20 am |
cdma band frequency shift repeater fsr solve problems weak mobile signal
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The CDMA In-Band Frequency Shift Repeater (FSR) is designed to solve problems of weak mobile signal,

which can expand more coverage than RF repeater and reduce investment for the areas where fiber optic or dedicated cable is not allowed.

The system consists of two parts: Donor Unit and Remote Unit. The Donor Unit receives the BTS (Base Transceiver Station) signal via open air RF transmission or direct coupler closed to BTS, then converts it from the working frequency to the link frequency that is inside the working band, and transmits the amplified signal to the Remote Unit that will reconvert the signal to the working frequency and provide signal to the areas where network coverage is inadequate. And the mobile signal is also amplified and retransmitted to the BTS via the opposite direction.


 Aluminum-alloy casing with IP65 protection has high resistance to dust, water and corroding

 Best solution to eliminate mutual interference due to sharing the same frequency

 No stringent isolation requirement for antenna installation

 Easy to choose installation site

 RS-232 port provides a link to a notebook for local supervision or to the built-in wireless modem to communicate with the NMS (Network Management System) that can remotely supervise repeater’s working status and download operational parameters to the repeater


To expand signal coverage or fill signal blind area where CDMA signal is weak or unavailable.

Outdoor: Airports, tourism regions, golf courses, tunnels, factories, mining districts, villages, …

Indoor: Hotels, exhibition centers, basements, shopping malls, offices, parking lots, …

Technical Specification:

Items Donor Unit Remote Unit

Working Frequency

(customized) Uplink 450~457.5 MHz / 824~849 MHz / 1880~1890 MHz

Downlink 460~467.5 MHz / 869~894 MHz / 1960~1970 MHz

Link Frequency (customized) Customized

Transmission Distance ≤ 20km

No. of Channels (for channel shift) 1 / 2

Frequency Error ≤ 0.05ppm

Downlink Input Level Wireless access: ≥ -70dBm Cable access: ≥ -10dBm

Output Power Uplink Wireless access ≥ 30dBm ≥ 33dBm

Cable access ≥ 0dBm

Downlink 30~40dBm (1W~10W) 37~43dBm (5W~20W)

Voltage Standing Wave Ratio < 1.3

Gain Wireless access ≥ 85dB ≥ 90dB

Cable access ≥ 45dB

Gain Adjustment Range 31 dB @ step of 1 dB

Noise Figure < 5dB (only for uplink)

In-band Ripple ≤ 3dB

Spurious Emission Out of band per channel ∆f ≥750kHz: ≤ -45dBc/30kHz ∆f ≥ 900kHz: ≤ -42dBc/30kHz

∆f ≥1.98MHz: ≤ -65dBc/30kHz ∆f ≥ 1.98MHz: ≤ -59dBc/30kHz

Within working band ≤ -15dBm/30KHz

Out of working band

(∆f > 2.5MHz) 30MHz~1GHz: ≤ -36dBm/100kHz

In-Band Inter-Modulation Attenuation ≤ -15dBm/30kHz

Out-of-Band Suppression Per band ∆f > 2.5MHz: < -40dBc (downlink); ∆f >10MHz: < -60dBc (uplink)

Per channel ∆f > 1.98MHz: < -44dBc (downlink); ∆f >1.98MHz: < -38dBc (uplink)

System Delay ≤ 10μSec

I/O Impedance 50Ω

RF Connector N-Type (Female)

Temperature Range Operation: -25°C ~ + 55°C / Storage: -30°C ~ +60°C

Relative Humidity Range ≤ 95% (non condensing)

Power Supply (customized) DC +24V/ DC –48V / AC 220V±15%, 50Hz / AC 110V

Backup Power Supply (optional) 4 hours

Dimensions 630mm X 400mm X 230mm

Weight 33kg 35kg

NMS Monitoring Function Real-time alarm for door status, temperature, power supply, etc.

Company Contact:

Guanritechnology photo
Contact Name: Ankeer
Company Name: Shenzhen Guanri Technology Co., Ltd
Email: Email
Tel: 86-755-26711296
Fax: 86-755-26723967
Street Address: 5/F Building M-8,
High Technology Industrial Park,
Shenzhen, China
Website: http://www.guanri.com.cn
Member name: Guanritechnology
Country: China-CN China
Member Since: 12 August 2008
Total Leads: 11 Guanritechnology Import Export Business Leads
Business focus: Repeaters, Fiber Optic Repeater, Pass Band Rf Repeater, Band-selective Rf Repeater, Frequency Shift Repeater, Providing Solutions Of Coverage
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