Welcome to Shireen Inc

Shireen, Inc. designs, develops and manufactures components and systems for the Broadband Wireless, SCADA, Military and Telecommunications industries. Our solutions include everything from “mission critical” components for military communication systems to increasing the power of WiFi installations.

What We Offer
Our products are constantly improved to take advantage of the latest technology available. We specialize in custom designs and solutions for all segments of the wireless industry. At Shireen, we make wireless work!
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Showing posts with label Dual Band Cellular Repeater. Show all posts
Showing posts with label Dual Band Cellular Repeater. Show all posts

How to Choose a Cell Repeater

Posted by Perception System Tuesday, September 13, 2011 0 comments

You're tired of experiencing poor cell phone reception, dropped calls and poor voice quality. You get some reception outside your home or office, but as soon as you step inside it seems to magically disappear. Your phone is constantly scanning for a signal, so your battery dies much faster than it should. You've double checked your phone and called your carrier, all to no avail.
You need a cell phone signal booster.

How Cell Repeaters Work

Cell repeaters, also known as cell amplifiers, cell extenders or cell boosters, are fairly simple to use. Most boosters consist of three major components: an external directional antenna, an internal antenna and a signal amplifier.

The external directional antenna is typically placed outside the home or office (preferably outside a window or on a roof) and is positioned to face the nearest cell tower. In the event that you are installing the antenna yourself, a signal strength monitor is recommended to help you figure out the best location for the antenna. The external directional antenna is designed to pick up the weak signal that is being broadcast by your cellular provider.

The signal the external antenna picks up is sent over wires to the signal amplifier. The signal amplifier is what increases the signal. Your boosted signal is then sent to the internal antenna which wirelessly rebroadcasts a more powerful signal within your space.

How to Differentiate Between Cell Boosters by Frequency

Cell boosters operate on different frequencies: 800 MHz, 1900 MHz and iDEN. The 800MHz frequency is compatible with Verizon phones outside of Florida and Texas, Alltel phones in selected states, and US Cellular phones in selected states. T-mobile, Sprint, Metro PCS and several other carries operate on the 1900MHz band. AT&T operates on both bands.

Often the most comprehensive solution is to opt for a Dual Band Cellular Repeater. These repeaters operate on both the 800 MHz and 1900 MHz bands, ensuring proper coverage with all major carriers (with the exception of Nextel). Nextel users in need of a cellular repeater must invest in an iDEN booster.


Source: Ezine

Dual Band Cellular Repeater

Posted by Perception System Thursday, June 9, 2011 0 comments

Cellular Repeater
Developing Various Products for the Telecom Industry.
Shireen Inc. develops various products for the Telecom Industry; understanding that there still remain a vast majority of regions, industries and people who do not receive a sufficiently strong cell phone signal. This State of the Art Dual Band Repeater/Amplifier design increases signal strength and improves cellular communication without a physical connection to the cell phone.

The amplifier has a typical signal gain of 50dB which is automatically controlled using proprietary digital design. It can be employed in large yachts, homes and offices.

The Dual Band Cellular Repeater/Amplifier works in the following manner: An outside antenna (placed outside the premises) receives the signal from the base station, the Cell Amplifier unit amplifies the signal and repeats it to the cell phones through the inside antenna (placed indoors). You get the freedom to walk around while talking on your phone. This technology allows clean and clear wireless functioning of multiple cell phones operating in the 800MHz or 1900MHz bands.

Buy Dual Band Cellular Repeater today
Buy a Dual Band Cellular Repeater Kit here…

Download Specifications
Product Spec #18-850

Manuals
Installation and Operations

FCC ID: YEF18850-8001900
IC: 8987A-GSMCDMA

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