Archive for the ‘Improving Cellular Reception’ Category

FCC Announcement on Signal Boosters

Monday, May 9th, 2011

The Federal Communications Commission (FCC) as been investigating the use of cellular signal boosters by individuals and businesses. Since this issues closely effects our business and our customers, we are keeping a close eye on the progress.

The FCC has issued an announcement on their investigation progress. We are very happy that they recognize the need for cellular signal boosters and have indicated its intent to increase booster certification standards.  FCC commissioners have issued a “Notice of Proposed Rule Making” (NPRM) that proposes new requirements. Once the NPRM is published in the Federal Register there will be a 75 day comment period seeking input on the technical standards boosters will be required to meet.

In the next phase of the process, the FCC will take comments from the public, manufacturers, and the cell carriers before adopting any new certification standards. The current proposal would give manufacturers and resellers six months from the date of adoption to comply with the new regulations.

Read More from Wireless Week  - FCC Plans Rules on Cell Phone Signal Boosters:

The following is a response from Wilson Electronics:

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Wilson Electronics Issues Statement on the FCC’s Issuance of an NPRM in Regards to Cell Phone Signal Boosters
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– In response to the FCC’s decision to issue an NPRM on the regulation of cell phone signal boosters, Wilson Electronics issues the following statement from Joe Banos, COO, Wilson Electronics”
St. George, Utah – April 7, 2011 – “Wilson Electronics commends the FCC and its Commissioners for its issuance of a Notice of Proposed Rule Making (NPRM), which will gather industry suggestions as to what specifications cellular signal boosters should meet in order to obtain FCC certification.
Today’s action ensures that cellular signal boosters can continue to benefit consumers in underserved areas and help public safety officials in their jobs.
We are pleased the FCC agrees that new standards for signal boosters are needed. We are hopeful that as the rulemaking process proceeds, the Commission will adopt the standards proposed by Wilson in 2009 to protect consumers from poorly designed boosters that can interfere with cellular service and damage service provider networks.
We’re also hopeful that the NPRM process can bring Wilson Electronics and the cellular service providers to the table to discuss what needs to be accomplished on a practical technical level. This would ensure that signal boosters can continue to provide individual and commercial users as well as government and Public Safety officials with a valuable tool that allows them to use their cellular devices in more places, with no risk of interference to providers’ cell sites.”
About Wilson Electronics, Inc.
Wilson Electronics, Inc., a leader in the wireless communications industry for more than 40 years, designs and manufactures a wide variety of cell phone signal boosters, antennas and related components that significantly improve cellular communication in mobile, indoor, and machine-to-machine (M2M) applications. All Wilson products are engineered, assembled and tested in the company’s U.S.-based headquarters. Wilson boosters fully comply with FCC regulations for cellular devices and are FCC type accepted and Industry Canada certificated. Wilson Electronics has developed and patented microprocessor-controlled signal booster technology, which protects cell sites by preventing network interference due to oscillation or site overload.

Wilson DataPro for Vending Machines

Thursday, January 27th, 2011
Wilson DataPro Vending Machine Signal Booster

Wilson DataPro with Modem

Wilson Electronics® is introducing a new cellular signal booster specifically aimed at vending machines and kiosks. The DataPro™ by Wilson Electronics® is a Direct Connect amplifier for cellular broadband data card modems and is Wilson’s first cellular signal booster developed specifically for Machine to Machine (M2M) installations.

This direct connect configuration is small and compact to fit almost anywhere inside a machine and is based on Wilson’s Sleek in-vehicle cell phone signal booster. The dual-band DataPro™ is ready to integrate with CDMA modem installations to provide strong, reliable cellular signal that ensures successful M2M data transfer.

Wilson Electronics plans to start shipping the unit within the next few months.

More Info: Wilson DataPro Vending Machine Signal Booster

4G Signal Improvement

Tuesday, January 25th, 2011
Clear 4G Modem

4G Modem

4G wireless signal is the newest wireless standard that provides data speeds up to 10 times current 3G speeds.

4G is fast and you’re going to want to have it.

Verizon, for instance compares it’s 4G with it’s 3G network. Verizon 3G download speeds are in the 1mb/sec range but 4G can be 5 – 12mb/second. That’s a huge speed increase.

Improving 4G Signal

Of course, not everyone one is going to live or travel in areas with top 4G signal strength. Just as with 3G, many (most) areas will be far away and have obstructions such as trees, hills, building walls and roofs between blazing speeds and them.

And then there’s the wireless frequencies that 4G is using. They are different than what your current cell phone or 3G data card are using. 4G is being rolled out on a couple of different frequencies. For example, Verizon LTE is using 700MHz and Clear is using 2500MHz.

If you’re one of those trying to get a stronger 4G signal, you might consider attaching an external antenna directly to your 4G modem. These modems usually have external antenna ports built into them. Find the right external antenna adapter for your modem, attach an external antenna and you’re good to go. Make sure the antenna specs cover whatever frequency your service provider is using. Vehicle or Building signal boosters aren’t available yet but manufacturers are working on them.

We will be writing more on 4G signal improvement over the next few months so stay tuned.

More on Mobile Wireless Signal Boosters

Hear-Me.org

Sunday, December 12th, 2010

Hear-Me Logo

Fight For The Right Use Your Signal Booster

Hear-Me.org is a web site created by Wilson Electronics. Wilson manufacturers cellular signal boosters that improve cellular signal for cell phones and cellular data cards in areas where a service provider’s signal may be very weak. These signal boosters help those in such area make and receive cell phone calls when, without a signal booster, it would be impossible.  Hear-Me.org was set up to let individuals, companies and public service agencies express how signal boosters have helped them.

Cellular service providers claim that these signal boosters interfer with their service and are attempting to get the Federal Communications Commission (FCC) to limit the use of signal boosters to only those that have been approved by a service provider.

Wilson, as well as ourselves, disagree with the service providers approval requirement stance. We believe that this is unnecessary and would raise the cost of such systems as well as making them more difficult to get and may be totally unavailable to most people and services that depend on a good cell signal.  Wilson believes that their boosters do not cause interference with carriers service but believe that other systems do. Therefore, Wilson is petitioning the FCC to better regulate these signal booster and impose more restrictions on their design and keeping boosters readily available to those that need them.

The FCC has accepted a petition from Wilson Electronics to evaluate tightening certification of cell signal boosters for wireless networks. The FCC has accepted comments on booster use from outside sources and may decide to allow signal boosters to be approved and placed in service only by cell phone service providers, who offer no affordable multi-carrier or mobile boosting solutions, or may not approve the use of signal boosters at all.

Wilson is asking that all users of cellular signal boosters post their stories and/or videos on how signal boosters have helped them. You can post your story on the Hear-Me.org web site.

From Hear-Me.org

“According to the last U.S. Census, more than 59 million Americans live in rural areas and more than 50 percent have a cell phone. Currently, the public benefits from affordable signal boosters being available in rural and urban areas for safety, personal, and work related purposes. Additionally, boosters provide affordable access to those with limited cell phone signal, or no wired broadband connection. Limiting the distribution of signal boosters would negatively impact open access and innovation.

Rather than generating new rules giving cell carriers total control over boosters, in essence imposing a ban on these potentially life-saving devices, appropriate FCC regulations can ensure mechanisms are built into signal boosters to make them invisible to cell sites and therefore protect the carrier networks from interference. Properly designed products do not create interference with wireless networks.

Essential for Public Safety:

Members of the public safety community need access to signal boosters to save lives and access vital information.”

Read More at Hear-Me.org Fact Sheet and post your own experience.

Wilson AG Pro 75 Building Cellular Repeater

Thursday, December 9th, 2010

Wilson AG Pro 75 Repeater Amplifier Cellular

Wilson AG Pro 75 Cellular Repeater

New from Wilson® Electronics is the Wilson® AG Pro 75™ in building cellular repeater system. The Wilson® AG Pro 75™ amplifier is designed to boost the cellular signal inside a building for both cell phones and cellular data cards. It will boost the signal for almost all cellular service networks in North America including AT&T, Sprint, Verizon, T-Mobile, Rogers. It does not work with for Nextel iDEN networks (See Nextel iDEN Signal Improvement).

What’s Different?

Wilson Electronics already has 3 DualBand in-building cellular repeater systems including the Wilson SignalBoost Desktop, Wilson Small Office / Home Office (SOHO) and the Wilson SignalBoostDB Pro. Not to mention the variety of single band cellular amplifiers. The biggest differences are the Wilson AG Pro 75:

  • Has higher more gain (will cover larger areas)
  • Gain is manually adjustable for a custom install

The application for the AG Pro 75 will be for larger buildings.

More Features

The AG Pro 75™ is a dual band (800MHz / 1900MHz frequencies) amplifier. The amplifier gain is adjustable with control knobs on the front panel. The knobs enable the installer to adjust 800MHz and 1900MHz gains separately. The maximum amplifier gain is 75db for 1900MHz frequencies and 70db for 800MHz frequencies. The maximum gain on the AG Pro 75 is a substantial increase from Wilson’s previous highest gain amplifiers, their single band SmartTechnology cellular signal boosters. Being able to manually adjust the amplifier gain means the installer can more easily tune the amplifier for optimum gain specific to a particular installation and adjust according to the possible antenna separation and outside signal strength.

The AG Pro 75™ in-building cellular repeater is bidirectional and can boost the signal to and from the cell site. It is FCC type accepted and Industry Canada certified. It can be configured with current Wilson’s wide varity of building antennas and cable.

Alternative Wireless expects the Wilson AG Pro 75™ to be available for shipping by the end of December 2010.

Purchase /  More Info:
Wilson AG Pro 75 Building Cellular Signal Booster

How Cellular Repeaters Work

Sunday, October 24th, 2010
Here are some basics on how cellular repeater systems work.
A basic cell phone repeater system consists of:
  • Outside Antenna
  • Cellular Amplifier
  • Inside Antenna
The Outside antenna communicates with the towers, the signal runs through a low-loss cable to the cellular amplifier.  A Wilson Smart Tech amplifier can add 65db of power and send it through another cable to the inside antenna, which radiates the signal through the air, to your device.
Gains-Losses:  Everything here is designed to take the power (measured in dB) from outside and maximize it on the inside.
Phone:
  1. The tower sends out a certain amount of power. As it travels through the air, it becomes attenuated (reduced).
  2. Our cell phone receives the signal the signal with its 0dB gain antenna. When you’re standing outside for example, test mode might tell you it’s receiving -80dB of power (closer to zero is better)
That’s usable, since your phone can pick up a signal as weak as -105dB
Repeater:
  1. Tower transmits, signal is attenuated as it travels.
  2. The outside antenna on top of the building is more focused in the direction of the tower, so it has better gain, let’s say +5dB
  3. Now you have -75dB going into the wire. The wire has losses with every foot, so let’s assume -3dB for the whole thing.
  4. -78dB going into the booster. The amp adds 65dB to the signal, which puts us at -13dB.
  5. Another -3 through the inside cable and +3 from the dome inside antenna.
Now, at the end of the whole process, you have -13dB coming from your antenna. That is more than enough power for your phone to read the signal very clearly. How far will that signal go? If you can pick up signals as weak as 105dB from your phone, then (105dB – 13dB = 92dB) you hae a 92dB excess. So, if we lost less than 92dB, we could still use the phone. It takes about 90 feet of air travel to lose that much power when running at 1900Mhz (800Mhz goes much further), which means you can step 90 feet from the antenna and still use your phone (just barely). Going through objects however, that number may change.
When you split the signal between two antennas, expect the coverage to be split by the same ratio.
  • A 50/50 split reduces the signal by 3dB on each leg.
  • Have taps that splits with a loss of 1.5dB on one leg and 6dB on the other. I recommend those if you want to run 3 or 4 antenna in a line.
  • Another tap loses .5dB on one leg and 10dB on the other. I recommend those if you are using even more antennas and/or a secondary booster in the mix.
That’s the basics of how these things work, slightly geared toward your particular situation.
More Info on Cellular Repeaters

Cellular Amplifier Output Power and Gain

Tuesday, September 7th, 2010

When selecting a cellular amplifier there are many factors to consider. Two key specifications are amplifier gain and output power.

Cellular Amplifier Gain

Cellular amplifier gain is the number of times the power into the amplifier is increased at the output of the amplifier. Amplifier Gain is expressed in dB’s. (ex: 10 dB is a gain of 10 times, 20 dB is a gain of 100 times). For example, 1 watt into an amplifier which has 10 dB gain puts out 10 watts.

What if the amplifier is only capable of 3 watts output?

The amplifier is then over-driven. Too much input power results in 3 watts of distortion, just like yelling into a microphone and distorting a hi-fi system. The same happens to the cell phone amplifier, which causes it to interfere with adjacent channels on the cell site.

The maximum power that can be applied to a 10 dB 3-watt amplifier is .3 watts, which gives 3 watts of undistorted output. A cellular device (phone or datacard)  connected to a direct connection amplifier with normal cell phone maximum power (.2 watts) going into the amplifier and a gain of about 12 dB gives 3 watts of undistorted output power to the cell site. Any more input power would not increase the output, but only distort it, which causes harmful interference. A gain of 15 times is 11.8 dB.

Why do we need higher gain amplifiers?

An example is a 40dB,  3-watt cellular amplifier. We need more gain because when the cell phone has to transmit to and receive from the amplifier’s inside antenna (which is about 1-2 feet from the cell phone), the signal is much weaker into the amplifier than the .2 watts that was going directly into the direct-connection amplifier. The signal is now approximately 660 times weaker when it enters the amplifier’s input. It just so happens that a 40 dB gain amplifier will put out 3 watts with that input.

Different Gain for Different Applications

You can see that different gains are needed for different applications. Also, in an automobile situation with the outside antenna on the roof of the car and the inside antenna near the headrest, 40 dB is generally the maximum gain before the amplifier starts oscillating. A good cellular amplifier will shut down once oscillation occurs as to not cause harmful interference with other users on a cell tower.

With in-building applications, the cell phone is much farther from the inside antenna; therefore, a higher gain amplifier is needed. A 50 to 65 dB gain will generally give good coverage in most building applications dependent on outside signal strength. Amplifiers with higher gain require much greater antenna separation.  For example, a 72 dB gain amplifier requires 4 times more antenna separation distance than a 60 dB amplifier.

More information on In Building Cellular Amplifiers and In Vehicle Cellular Amplifiers

In Building Signal Improvement

Wednesday, August 4th, 2010

In Building Cellular Amplifier System

Cellular Repeater System

Where would you like to improve your cellular signal?

  • Home?
  • Office?
  • Warehouse?
  • Hanger?

Today, it’s easier than ever to improve your cellular signal. One of the best cell phone accessories categories is cell phone signal improvement. There are many systems that improve cellular signal strength inside of buildings. Picking the right one is the only challenge (well, installing the system can be a challenge too).

A cellular signal improvement system consists of:

  • Outside Antenna – Receives & Transmits to Your Provider’s Tower(s)
  • Cellular Amplifier – Takes Outside Signal, Amplifies It, Sends to Inside Antenna
  • Inside Antenna – Sends & Receives from the Amplifier and Broadcasts Inside.

That’s the basics. You’ll also need electrical power, maybe a lightning surge protector, cables and connectors.

The cellular amplifier (repeater) is the key. To strong an amplifier and the inside and outside antenna create oscillation. Unless your amplifier shuts down automatically, you can cause real interference with carrier towers in the area.

Basically you’ll need an amplifier that:

  • Communicates with your service provider’s towers at up to 3 Watts
  • Has Oscillation Control – Preferably automatically shuts down if it senses oscillation.
  • Has enough gain to cover your intended area.

More Info: In Building Cellular Booster Systems

iPhone 4 Signal Bars

Saturday, July 10th, 2010

A bit of drama popped up with the introduction of the iPhone 4. Users complained that if they held the phone in a certain way, the phone’s signal bars would drop dramatically. Apple responded by announcing that they were working on the formula on how bars are calculated.

It’s the popularity of the iPhone 4 that has brought the issue of how you hold the phone effects signal quality to the forefront. However, the potential to lose signal occurs in pretty much any cell phone if you cover the internal antenna with your hand or your head gets between the phone and cell tower.  So, this is not a new issue. I’m guessing that Apple’s announcement to change the signal bar calculation means that the signal drop should not be as dramatic as reported and that Apple feels that the actual problem is not the iPhone design (Where they placed the internal antenna).

Unfortunately there is no standard for calculating signal bars in relation to actual received signal strength reading.  Is Apple or AT&T any different from other carriers and manufacturers in the way they calculate signal bars? From our personal experience and testing, the major carriers and phone manufactures are all over the board in calculating signal bars as compared to the device received signal strength. The formulas are proprietary so there little that can be done to evaluate each. We have even seen cases where 2 phones on the same network, show different number of signal bars.

The most accurate way to determine your signal strength is to put your device into test mode and get a signal reading (in dbm). A BlackBerry’s signal reading can be found in Options > Status. Many GSM devices, including the iPhone 4, do not allow you to access test mode or any signal reading.

Here’s a good article with lots of contributions from the Wall Street Journal blogger on the issue.

The Case of Apple and the Mysterious Bars

Tekkeon Mobile Power Supply

Monday, June 14th, 2010
Tekkeon Mobile Power Supply

Tekkeon Mobile Power Supply

Cellular Amplifier Back Up Power

We get many requests for using a cellular amplifier in areas where there is no access to electricity or during power outages.

We have done some initial testing using a cellular amplifier with a couple of Tekkeon mobile power supplies with some pretty good results.

TekCharge MP1800

TekCharge MP1800

We tested the Tekkeon TekCharge MP1800 with our lowest power amplifier, the Wilson Sleek, and got about 5 hours of stand by time. We will continue to test with larger amplifiers and report the results.

More Info On Tekkeon Power Backup / Chargers at Alternative Wireless