When a signal booster accessories are difficult to find, then you expand your search

As a commercial device, the WilsonPro 4000R should be registered before use with the wireless provider, including seeking the consent of the provider. In essence, lots of wireless providers across the divide consent without a problem for cell phone signal booster use.
The device has to be operated with the right approved cables and antennas as the manufacturer has specified. This means antennas need to be installed about 8 inches or 20 centimeters from any individual. Note that if a wireless service provider who’s licensed or FCC requests you to stop using the device, you need to comply. E911 location details might not be offered or inaccurate particularly for calls made under the amplification of the device.
Also note that the largest carriers especially in the United States such as Sprint, Verizon, T-Mobile and AT&T plus over 90 extra regional carriers across the divide have consented to the use of any booster out there as far it has met the laid down certification standards, which the 4000R already has. However, since this a commercial grade booster, it has more stringent requirements and requires permission from all carriers within the city.
It is also important to remember to use the right antennas for the 4000-R. Every signal booster is different and the huge numbers of antenna types are there to meet this diversity. There’re new antennas such as the wide-band Indoor Dome or the outdoor wide-band Omni Donor capable of receiving and transmitting signals in a 360 degrees (360°) pattern. These are compatible with frequency ranges of between 698MHz and 2700 MHz, perfect for the WilsonPro 4000R.
Lots of factors determine and affect the signal booster coverage within buildings. These include hardwoods, firewalls, steel, concrete, strength of outside signal and frequency among others. Of course an accurate and professional system design can make it possible to ascertain the coverage of a building. The WilsonPro 4000R is one of the boosters protected from the interference of a problematic cell signal tower. Excessive signals are easily detected and hindered from seeping through. It works with higher signals by about 10 dB in contrast with most boosters out there.
Any user can easily change the gain controls of the downlink and uplink of the 4000R. Accordingly, the signal booster is the best type of signal booster to use in virtually any type of in-house setting. By playing a bit with the controls, it is easy to find the best controls that would work perfectly for your building or indoor space.
Parts and Accessories Included:
Wilson Pro 4000R complete commercial, industrial, and enterprise cell phone signal booster kit includes following.
Rack mounted signal amplifier.
One directional donor antenna (exterior antenna).
Four interior ceiling mount dome antennas.
One two feet Wilson 400 cable.
One seventy five feet Wilson 400 cable.
One sixty feet Wilson 400 cable.
Three 100 feet Wilson 400 cables.
One lightning surge protector.
Free Pole and hardware to mount exterior Yagi antenna.
Optional Parts and Accessories (not included):
Optional Omni Directional Exterior Antenna: 3G & 4G Omni Wide-band External Antenna.
Yagi (included) is more powerful than Omni (not included, can be purchased separately), but Omni’s attract signals from all directions and from all cellular service carriers. Omni’s also do not have to be pointed to the cell phone tower.
Additional Interior Panel Antenna(s): 3G & 4G In-Building Panel Antenna (50 Ohm).
Additional Interior Dome Antenna(s): 3G & 4G In-Building Dome Antenna (50 Ohm).

Distributed Antenna Systems are some other alternatives to Cell phone booster systems

A. RF Repeaters
Repeaters are used to increase the range of a transmitted signal by re-transmission. For a conducted signal, an amplifier is used. Optical systems don’t amplify but all these devices give the appearance of doing so. A Repeater is needed to secure sufficient isolation between donor and service antenna. When the isolation is lower than actual gain + reserve (typically 5-15 dB) then the Repeater is in loop oscillation. Also cheap models are equipped with automatic gain reduction in case of poor or weak isolation. In case of poor isolation the device works but with low gain, and coverage is poor.
B. RF Antennas
The antenna is a vital part of any Repeater installation. Because the function of a Repeater is to extend the range of communications between mobile and portable stations, the Repeater antenna should be installed in the best possible location to provide the desired coverage.
External directional antenna: Generally the larger the external antenna the better the signal although even a small, correctly oriented external antenna should provide better signal than the internal antenna on any cell phone. These can either be fitted by professionals or will include a signal strength monitor for easy alignment.
Internal rebroadcast antenna: The better systems will generally include an internal monopole antenna (although the type of antenna is far from standardized) for rebroadcasting the signal internally – the advantage of using a monopole antenna is that the signal will be equally distributed in all directions
(subject, of course, to attenuation from obstacles). Because all radio antennas are intrinsically polarized, cell phones perform best when their antennas are oriented parallel to the booster’s antenna – although within reasonable proximity the booster’s signal will be strong enough that the orientation of the cell phone’s antenna will not make a significant difference in usability.

C. RF Passive components
2) Combiners
3) Couplers
4) Duplexers
5) Terminators
6) Connectors
7) Feeder cables

DAS – A Clustered installation of Antennas!!!

A Distributed Antenna System (DAS) includes the use of several antennas as opposed to one antenna to provide wireless coverage to the same area but with reduced total power and additional reliability. Often at times a DAS uses RF directional couplers and/or wireless amplifiers to split and amplify the wireless signal from the source out to the distributed antennas. In many cases a DAS will use a combination of low loss coaxial cabling as well as fiber optic cabling supporting radio over fiber (RoF) technology to distribute the wireless signals to the antennas. A Distributed Antenna System can be designed for use indoors or outdoors and can be used to provide wireless coverage to hotels, subways, airports, hospitals, businesses, roadway tunnels etc. The wireless services typically provided by a DAS include PCS, cellular, Wi-Fi, police, fire, and emergency services.

A wireless communication network employs a distributed antenna system to provide radio coverage. The wireless communication network comprises a plurality of access points providing service in respective coverage areas. The access point within each coverage area connects to a plurality of antennas that are widely distributed within the coverage area. Radio resources at antennas within the overlapping region of two or more neighboring coverage areas are shared by the access points in the neighboring coverage areas according to a multiple access scheme. The sharing of radio resources within the overlapping region of two or more coverage areas allows the overlapping region to be enlarged, thereby providing more time to complete a handover.
A distributed antenna system (DAS) or a distributed radio system (DRS) generally refers to a radio-access architecture comprising a large number of antennas distributed widely across a large coverage area and connected to a centralized Access Point (AP). The radiation coverage of each antenna typically has a much smaller footprint than that of a base-centrally-located antenna/base station in a conventional cellular system. The DAS architecture has two main advantages.
First, it is possible to achieve high spatial re-use capacity due to the small coverage area of each antenna.
Second, the centralized access point has complete control of all the radio resources used at each antenna and can therefore coordinate the transmission and reception of signals to minimize interference in an increased system capacity.
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A DAS installation consists of a network of separately installed antenna nodes that are connected to a common source through fiber or coaxial cable. Splitting transmitted power among several antenna elements to cover the same area as a single antenna reduces the total power required and increases the reliability of the signal.
Typically, the antennas in a DAS are connected to the AP through optical fibers. The AP may process the received (uplink) signals from multiple devices using appropriate combining techniques, such as maximum ratio combing (MRC) or interference rejection combining (IRC). On the downlink, the AP may transmit to multiple devices using zero forcing or dirty paper-coding to suppress interference if the forward link channel is known. The AP may also use macro diversity techniques to direct radiation to specific mobile devices if the channel is not known.

A run down of all the important components inside modern cell phones

On taking a cell phone apart, one would find a few individual parts, such as, an antenna, a liquid crystal display (LCD), a keyboard, a microphone, a speaker, and a battery. Inside the phone there is a circuit board which is otherwise called the heart of the system.
First you would enter in room analog-to-digital and digital-to-analog conversion chips which translate the outgoing audio signal from analog to digital and the incoming signal from digital back to analog. It can process millions of calculations per second in order to compress and decompress the voice stream. Then you would enter into the second room where the digital signal processor (DSP) is located. Here in this room you would soon discover that the DSP is a highly customized processor designed to perform signal manipulation calculations at high speed. Next, you would enter the third room with the microprocessor.
Signal Processr Photo
The microprocessor handles all the main functions for the keyboard and display, deals with command and control signaling with the base station (cell tower) and also coordinates the rest of the functions on the board. The read only memory (ROM) and Flash memory chips provide storage for the phone’s operating system and customization features, such as the phone directory. The radio frequency (RF) and power section handles power management and recharging, and also deals with the hundreds of FM channel. Finally, the RF amplifiers handle signals traveling to and from the antenna.

An analog signal has a base carrier’s radio frequency signal, which is modified in some way to amplify the strength of the signal or vary the frequency to add information to the signal. An analog signal can be represented as a series signal to a signal carrier known as sine waves because carrier waves are analogous to the fluctuations of the human voice or other sound that is being transmitted.

Advanced Mobile Phone System (AMPS), the first common cell phone system in the U.S., uses a range of frequencies between 824MHz and 894 MHz for analog cell phones. A Hertz (Hz) is equal to cycles per second, while a MegeHertz (MHz) is equal to one million cycles per second. The frequencies chosen to be used in analog voice channels are 30 kHz wide, because it gives voice quality that is comparable to a wired telephone.

The transmitter and receiver frequencies of each voice channel are separated by 45 MHZ, to keep them from interfering with each other. Each carrier has 395 voice channels and 21 control channels for activities of registration and paging. Each cell only uses about one-seventh of its frequencies. This helps a hexagonal cell and the six cells in the grid to all use the frequencies.

Digital cell phones use the same radio technology in a different way. For instance, digital phones change voice into binary information (1 and 0) and then compresses it where this compression allows ten digital phones to occupy the same frequency space as one analog cell phone.
Speech is sound in motion, but talking produces acoustic pressure. A telephone reproduces sound by electrical means.

However, in wireless technology, a coder inside the mobile telephone converts sound to digital impulses on the transmitting side and on the receiving side it converts these impulses back to analog sounds. A coder or vocoder is a speech analyzer and synthesizer all in one. A vocoder is found in every digital wireless telephone and is part of a larger chip set called a digital signal processor.

In this process, sound gets modeled and transmitted on one end of the coder and on the receiving end, the speech synthesizer part, interprets the signal and produces a close match of the original.

These sounds can vary because of telephone circuit’s resistance, while electrically representing speech with a continuous (analog) electromagnetic wave; however, digital signals remain stable for the length of their travel because digital signals are a mathematical or numerical representation of sound, with each sonic nuance captured as a binary number.

On hearing sounds, your ears are responding to tiny, rapid changes in the pressure of the air. These changes are called sound waves. They can have a single frequency and constant amplitude. Hearing is a complex mixture of waves with different frequencies and amplitudes. Sound waves range from pure sine waves to complex combinations of waves. The normal human ear can perceive sound ranging in frequency from 20 to 20,000 Hz.16
For reference visit: https://www.scribd.com/document/42151262/What-Are-the-Parts-Inside-a-Cell-Phone

A guide to Boost Cell phone Signal on the Boats

While carriers continue to expand their coverage areas by adding more towers on land, water showcases a hassle for providing adequate coverage for the passengers on boats. To deal with this problem specifically, cell phone boosters are designed wherein they take weak signal from land based towers, amplify it and broadcast it to the passengers on the boat. For a better and faster reception while docked or out on the water, the best option for the passengers would be a marine cell phone signal booster. A marine signal booster works by using an external antenna mounted on the boat which receives a cell signal from the closest tower, that is then passed to an amplifier, and then broadcast the boosted signal to the cabin via an inside antenna. The system also works in reverse when a call is being placed from a phone on the boat.

The three major prominent marine signal booster kits being the SureCall Flex2Go Marine Kit, that boosts 2G and 3G for most major carriers, the Wilson Mobile 4G Marine Kit, which boosts 2G, 3G and 4G LTE for most major carriers, and the Cradle booster, which is meant for only one phone at a time. The Wilson Mobile 4G Marine Kit boosts voice calls, 3G data and the new 4G LTE networks for the major carriers in North America to the inside cabin of the boat or marine vehicle. It has the strongest mobile amplifier allowed by the FCC, but if there is a very weak outside signal, the coverage area may extend only a few feet from the inside antenna.
The Sleek 4G cradle booster will boost the 2G, 3G and 4G LTE signals of all major carriers for one individual device at a time. The device should generally sit in the cradle at all times to receive boosted signal, hence requiring speakerphone or a Bluetooth headset for voice calls. The SureCall Flex2Go Marine Kit normally boosts voice calls and 3G data to the inside cabin of the boat or marine vehicle. It is believed to have the strongest mobile amplifier allowed by the FCC. The coverage area extends only a few feet from the inside antenna if there is a weak external signal.

Important point to be noted is that a marine signal is solely meant for its use within the boat living area and not the deck. If a booster is being used on the deck, then the signal from the internal antenna can be transmitted back to the external antenna, causing oscillation or feedback, which will immediately shut down the system. A marine signal booster provides greater convenience for voice calls and data usage, as well as peace of mind in case of emergency situations.