Step 1. Make sure you have positioned the booster in a window with the strongest
signal close enough to an existing electrical outlet.
Step 2. Make sure you have sucient cable length between proposed inside antenna
location and booster connector.
Installation Overview
Step 1. Find the window area that has the strongest signal. (See page 7 for instruction)
Step 2. Install the inside antenna. (See page 8 for instruction)
Step 3. Mount the signal booster, connect the inside antenna cable to the signal booster, and
connect the booster to an AC power source. (See page 9 for instruction)
Step 4. Congure gain settings on the signal booster if needed.
Step 1. Find the area with the Strongest Signal
The signal booster requires a minimum cellular signal of low –100 dBm to high –90 dBm.
Signal readings usually appear as a negative number (for example, -85). The stronger
the EZBoost signal, the closer it gets to zero. Aim for a signal close to -50 dB. Signals
stronger than -50 dB may cause the booster to shut down (see the graph below). Before
installing the outside antenna, nd the area with the strongest cellular signal source from
your service provider by following the directions below. You can also go to www.antennasearch.com to nd the general location of your carrier’s towers.
Measure the strength of the existing cellular signal in various locations
• Apple iPhones: Dial*3001# 12345#* and press Call. In the top-left corner, a number appears instead of bars.
• Android devices: download apps such as “Network Signal Info” in the Google Play store to measure signal
strength. Search check real signal strength to nd other cell signal measurement apps.
• Internet: go to www.speedtest.net
-50dB
-60dB
ExcellentGoodPoor
-70dB
Cell
Tower
-100dB
-90dB
-80dB
Outside
Antenna
2. Select a window sill location away from buildings, walls, trees, hills, and other terrain features that
can block or reect wireless signals with the strongest signal.
Note: Where you install your booster in relation to the carrier’s cell phone tower also determines signal strength. Although cell phone
carriers try to place towers for maximum coverage, local ordinances and terrain features can restrict tower locations, which can limit signal
For areas of 1000 square feet and below allow 30-35 feet of separation between the
booster and the desktop antenna.
The range of the antenna is dependent on three factors:
1) physical obstructions,
2) power generated by booster
3) reception from outside signal received and
distributed by outside antenna.
• Storage and transportation: Store and place in non-extreme room-temperature
and dry environment
• Attention: This antenna should not be used near open re or ame
Booster
Inside Antenna
Step 4. Install the Signal Booster
1. Select a location close to a working AC outlet. Do not expose the signal booster to
excessive heat, direct sunlight, moisture, and airtight enclosures. In areas where there
are higher temperatures, install the booster vertically, so air can move between the metal
channels on the faceplate.
2. Use supplied screws or appropriate screws for surface of mounting location and drill
through screw tabs holes on boosters.
3. Connect the inside antenna cable to the signal booster connector marked INSIDE (see
page 14). Hand-tighten the connection.
4. Connect the AC power cord to the signal booster.
5. Connect the plug on the other end of the 110V AC power outlet.
6. Turn the booster’s power switch on.
• The signal booster turns on automatically.
• The Power LED lights up to show that the signal booster is ready for use.
• The Alert LED ash up to 15 seconds on each band to show the band is activated
Note: If the Power LED does not turn ON or the Alert LEDs continue to ash, see Troubleshooting page 11-12.
This booster is rated for 5-15V input voltage. DO NOT use the booster with a higher voltage power supply. This can damage the booster, cause
personal injury, and void your warranty.
1. The back of the booster should be pointed in the direction of the nearest cell tower.
Go to www.antennasearch.com for information.
2. Place the table-top antenna in a central location at least 20 feet from the booster.
3. To set the attenuation value please use the chart below for reference. Distance between
antenna and equipment
Warning: Window lms that are used to block UV rays also block cellular signals. When using a cellular signal booster with a home comprised of
lm-coated windows a booster that comes with an outdoor antenna must be used.
Your signal booster restarted
and shut down for 15 minutes,
and is now shut down
permanently.
The red LED goes ON.
The Power LED does not
turn ON.
Yellow/Red Flashing LED
The Alert LEDs continue
to ash.
Your signal booster has
no power.
This means that the Automatic Gain Control (AGC) is adjusting
which is part of the boosters normal operation
Signal coming into booster from cellular tower is too strong causing
the booster to automatically shut down. There are two possible
solutions:
1. Add an inline attenuator to the cable coming into the booster
2. Relocate the EZBoost to a location where the signal is weaker.
Each SureCall signal booster is equipped with Auto Shutdown to
prevent cell tower interference. The outside antenna may be close
to a cell tower. Move the outside antenna to a location that provides
sucient distance from the cell tower to prevent the signal booster
from automatically enabling Auto Shutdown. Once away from the
original location.
More antenna separation is needed. If you cannot provide more
antenna separation and the Alert LEDs ash after the initial activation
period, lower the dial above the blinking LED by 5dB (for example,
from 50 to 45) and monitor the bars on your cell phone to see
whether reception improves.
Be sure the AC outlet is working and is not controlled by a wall
switch that can cut power to the outlet.
Oscillation is detected. First try increasing the separation between
the indoor and outdoor antennas. If this doesn’t eliminate oscillation,
lower the dB gain in 5dB increments.
The signal booster shuts down automatically, and then restarts after
60 seconds. Turn down the PCS or Cellular dial that is oscillating to
prevent the signal booster from shutting down automatically.
This may indicate that additional antenna separation is needed.
Verify that the switch on the power supply is turned on and Green
LED is ON.
Connect the power supply to an alternate power source.
Be sure the power source is not controlled by a switch that can
remove power from the outlet.
Check the green POWER LED on the signal booster. If it is OFF,
return the power supply to SureCall. Contact tech support at 1-888365-6283 or support@surecall.com, or go to www.surecall.com and
log on to online support to receive an RMA.
SpecicationEZBoost 4G
Uplink Frequency Range (MHz):824-849 / 1850-1910
Downlink Frequency Range (MHz):
Supported Standards:
Input/Output Impedance:
Maximum Gain:
Noise Figure:
VSWR:
AC Input:
Maximum Output Power:
Cable:
RF Connectors:
Power Consumption:
Dimensions:
Weight:
FCC ID:
869-894 / 1930-1990
CDMA, WCDMA, GSM, EDGE, HSPA+, EVDO, LTE and all cellular standards
50 ohm
65dB-Cellular / 72dB- PCS
7dB
≤2.0
110V
1 Watt EIRP
SC-240-50NN
N Female (both ends )
<10W
9” x 11.375” x 2.5”
2 lbs 5 oz
RSNEZBOOST5
Kitting Information
Component
Built-in Outside Antennas*
Indoor Antenna*
Inside Cable*
Product Number
SC-303
SC-302W
SC-240-50NN 50 Feet
Gain / LossNote
800 MHz1900 MHz
5 dBi
3 dBi
4.83 dB
8 dBi
5 dBi
8 dB
50 Feet or longer
*All equivalent antennas and cables are suitable for use with the EZBoost booster.
Note: Due to the recent change of our company name from Cellphone-Mate (CM) to SureCall (SC) we have changed the prex on all of
our antennas, cables and accessories from CM to SC-.
SureCall warrants its products for three years from the date of purchase against defects in workmanship and/or materials.
Specications are subject to change. The three-year warranty only applies to products meeting the latest FCC Certication
Guidelines stated on 2/20/2013 and going into eect April 30, 2014. A two-year warranty applies to any products manufactured
before May 1, 2014.
Products returned by customers must be in their original, un-modied condition, shipped in the original or protective packaging
with proof-of-purchase documentation enclosed, and a Return Merchandise Authorization (RMA) number printed clearly on the
outside of the shipping container.
Buyers may obtain an RMA number for warranty returns by calling the SureCall Return Department toll-free at 1-888-365-
6283. Any returns received by SureCall without an RMA number clearly printed on the outside of the shipping container will
be returned to sender. In order to receive full credit for signal boosters, all accessories originally included in the signal booster
box must be returned with the signal booster. (The Buyer does not need to include accessories sold in addition to the signal
booster, such as antennas or cables.)
This warranty does not apply to any product determined by SureCall to have been subjected to misuse, abuse, neglect, or
mishandling that alters or damages the product’s physical or electronic properties.
SureCall warrants to the Buyer that each of its products, when shipped, will be free from defects in material and workmanship, and will perform in full accordance with applicable specications. The limit of liability under this warranty is, at SureCall’s
option, to repair or replace any product or part thereof which was purchased up to THREE YEARS after May 1, 2014 or TWO YEARS for products purchased before May 1, 2014, as determined by examination by SureCall, prove defective in material
and/or workmanship. Warranty returns must rst be authorized in writing by SureCall. Disassembly of any SureCall product by
anyone other than an authorized representative of SureCall voids this warranty in its entirety. SureCall reserves the right to make
changes in any of its products without incurring any obligation to make the same changes on previously delivered products.
As a condition to the warranties provided for herein, the Buyer will prepay the shipping charges for all products returned to
SureCall for repair, and SureCall will pay the return shipping with the exception of products returned from outside the United
States, in which case the Buyer will pay the shipping charges.
The Buyer will pay the cost of inspecting and testing any goods returned under the warranty or otherwise, which are found to
meet the applicable specications or which are not defective or not covered by this warranty.
Products sold by SureCall shall not be considered defective or non-conforming to the Buyer’s order if they satisfactorily fulll the
performance requirements that were published in the product specication literature, or in accordance with samples provided
by SureCall. This warranty shall not apply to any products or parts thereof which have been subject to accident, negligence,
alteration, abuse, or misuse. SureCall makes no warranty whatsoever in respect to accessories or parts not supplied by it.
Limitations of Warranty, Damages and Liability:
EXCEPT AS EXPRESSLY SET FORTH HEREIN, THERE ARE NO WARRANTIES, CONDITIONS, GUARANTEES, OR REPRESENTATIONS AS TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR OTHER WARRANTIES, CONDITIONS,
GUARANTEES, OR REPRESENTATIONS, WHETHER EXPRESSED OR IMPLIED, IN LAW OR IN FACT, ORAL OR IN WRITING.
SURECALL AGGREGATE LIABILITY IN DAMAGES OR OTHERWISE SHALL NOT EXCEED THE PAYMENT, IF ANY, RECEIVED
BY CELLPHONE-MATE, INC. FOR THE UNIT OF PRODUCT OR SERVICE FURNISHED OR TO BE FURNISHED, AS THE CASE
MAY BE, WHICH IS THE SUBJECT OF CLAIM OR DISPUTE. IN NO EVENT SHALL SURECALL BE LIABLE FOR INCIDENTAL,
CONSEQUENTIAL, OR SPECIAL DAMAGES, HOWSOEVER CAUSED.
SAFETY INFORMATION
This is a CONSUMER device.
BEFORE USE, you MUST REGISTER THIS DEVICE with your wireless provider and have your provider’s consent. Most wireless providers
consent to the use of signal boosters. Some providers may not consent to the use of this device on their network. If you are unsure,
contact your provider. You MUST operate this device with approved antennas and cables as specied by the manufacturer. Antennas
MUST be installed at least 20 cm (8 inches) from any person. You MUST cease operating this device immediately if requested by the
FCC or a licensed wireless service provider.
All matters regarding this warranty shall be interpreted in accordance with the laws of the State of California, and any controversy that cannot
be settled directly shall be settled by arbitration in California in accordance with the rules then prevailing of the American Arbitration Association, and judgment upon the award rendered may be entered in any court having jurisdiction thereof. If one or more provisions provided
herein are held to be invalid or unenforceable under applicable law, then such provision shall be ineective and excluded to the extent of
such invalidity or unenforceability without aecting in any way the remaining provisions hereof.
WARNING: E911 location information may not be provided or may be inaccurate for calls served BY USING THIS DEVICE.
48346 Milmont Drive
Fremont, California 94538
USA
888.365.6283
Fax: 510.996.7250
www.surecall.com
SureCall has made a good faith eort to ensure the accuracy of the information in this document and disclaims the implied warranties of
merchantability and tness for a particular purpose and makes no express warranties, except as may be stated in its written agreement with
BEFORE USE, you MUST REGISTER THIS DEVICE with your wireless provider
and have your provider’s consent. Most wireless providers consent to the use of
signal boosters. Some providers may not consent to the use of this device on their
network. If you are unsure, contact your provider.
You MUST operate this device with approved antennas and cables as specied by
the manufacturer. Antennas MUST be installed at least 20 cm (8 inches) from any
person. You MUST cease operating this device immediately if requested by the
FCC or a licensed wireless service provider.
WARNING. E911 location information may not be provided or may be
inaccurate for calls served by using this device.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• C on ne ct the e qui pm en t int o an outl et on a ci rcui t di ff er en t f rom th at to w hi ch the re ce iv er is co n ne ct ed.
• Consult the dealer or an experienced radio/TV technician for help.