Dual-Band Wireless
Adjustable Cellular Booster / Kit
FLEX 2GO Kit for Vehicles
INTRODUCTION 2
PRINCIPLES OF OPERATION 2
SURECALL FLEX 2GO PACKAGES 3
FLEX 2GO BOOSTER HARDWARE 4
PACKAGE CONTENTS 5
SITE SELECTION 5
INSTALLATION INSTRUCTIONS 6
TROUBLESHOOTING 9
SPECIFICATIONS 13
SAFETY INFORMATION 14
WARRANTY 15
3G Vehicle Cell Booster & Kit
FLEX 2GO (CM-FLEX2GO)
User Guide
INTRODUCTION
Introduction
Congratulations on purchasing the SureCall Flex 2Go kit, the finest cellular
amplifier available for your vehicle!
SureCall adjustable cellular boosters and kits remove the frustration over dropped calls,
limited range, and slow data rates by amplifying incoming and outgoing cellular signals
in vehicles. The Flex 2Go is designed with leading-edge technologies to detect and
amplify weak incoming signals your cellular device would otherwise miss and to
broadcast a significantly stronger signal back to the cell tower.
This guide contains all the information you need to get your SureCall Flex 2Go booster
system up and running.
Principles of Operation
The SureCall Flex 2Go is a high-quality bidirectional amplifier that boosts cellular
signals for cars, motorhomes, and other vehicles.
The Flex 2Go works with two antennas:
An inside antenna that communicates with your cell phone.
An outside antenna that communicates with the cell tower.
Signals sent from a cell tower are received by the outside antenna, amplified by the
booster and then sent to your phone via the inside antenna.
When your phone transmits, the signal is sent to the inside antenna, and then sent to
the cell tower via the outside antenna.
Some cell signal is required for the Flex 2Go to enhance cellular signal coverage.
The weakest cell signal for the Flex 2Go to work is low -100dBm to high -90dBm.
dBm is an abbreviation for the power ratio in decibels of the radio power per one
milliwatt and indicates cell signal strength.
Flex 2G Kit for vehicles (CM-FLEX2GO) SureCall, Inc. Page 2
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INTRODUCTION
Package
Package Contents
CM-FLEX2GO
50dB booster with auto shutdown
Magnetic mount antenna – CM200
Patch antenna with 12’ cord – CM110W
DC car charger (18’cord) – for vehicle use
Velcro® and screw-mounting kit
SureCall Flex 2Go Packages
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INTRODUCTION
Outdoor Antenna
Connector (not shown)
Indoor Antenna
Connector
Power Connector
Digital
Interface
PCS1900 Dial
Alert
Alert
Cellular-800
Dial
Digital
Interface
Flex 2Go Booster Hardware
The following figure shows the key hardware components on the Model CM-FLEX2GO
cellular booster. Refer to this figure as you install your SureCall Flex 2Go.
LED
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PACKAGE CONTENTS
Package Contents
Unpack all package contents, compare them against the package contents list,
and check for damage. For missing or damaged items, contact your reseller.
Keep the carton and packing material to store the product or if you need to return
it.
Site Selection
For optimum performance, select a location for your booster that:
Is under the seat of the vehicle, for example.
Is away from excessive heat, direct sunlight, or moisture.
Has proper ventilation.
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INSTALLATION INSTRUCTIONS
Installation Instructions
The Flex 2Go booster kit is suited for installation in a vehicle or motor home.
Refer to the figure below when performing the following procedures.
Step 1: Connect the Outside Antenna
1. Mount the magnetic antenna in a location that:
Is on top of the vehicle.
Has at least a 12-inch radius clear of obstructions and other radiating
elements, such as a radio antenna.
Is at least 4 - 6 feet from the inside antenna.
2. Using the supplied cable, connect the outside antenna to the booster
connector marked OUTSIDE.
3. Run the outside antenna cord under front door insulation lining to hide and
protect antenna cable. Wrap up any loose cable.
4. Hand tighten the connection.
Note: The outside antenna must not be co-located or operating with any other
antenna or booster.
Step 2: Connect the Inside Antenna
1. Mount the inside antenna so it is:
Within 2-3 feet of the cell phone for best results.
Mounted on a surface that is at least 4” (10 cm) away from metal.
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INSTALLATION INSTRUCTIONS
2. Using the supplied cable, connect the antenna to the booster connector
marked INSIDE (see page 4).
3. Hand tighten the connection.
Step 3: Mount the Booster
1. Select a location for your booster, such as under the driver’s seat.
Step 4: Connect to DC Power
1. Connect the Power Cord. Connect the DC power cord to the booster before
plugging it into the cigarette lighter adapter. Verify that all connections to the
booster are tight and secure.
2. Turn the power switch on the lighter adapter to the ON position.
The LED light glows, indicating that the booster is ready to use. The booster
turns on automatically.
The Power LED goes ON to show that the booster is ready for use (see
page 4).
If the Power LED does not go ON, be sure the DC outlet and adapter are
working.
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INSTALLATION INSTRUCTIONS
If the red LED goes ON, it is the result of one of two factors.
1. More antenna separation is needed. Most likely, the easiest way to achieve
this is to move the magnetic mount antenna farther to the back of vehicle
away from the inside patch antenna.
2. Your vehicle is too close to a cell tower
If unable to provide more antenna separation and the Alert LEDs flash after
the initial activation period, lower the dial above the blinking LED by 5dB
(for example, from 50 to 40) and monitor the bars on your cell phone to see
whether reception has improved.
The booster case may become warm during operation. This is normal.
Press any key on your cell phone to refresh communication with the base
station.
WARNING. The booster is rated for 5-15V input voltage. DO NOT use the
booster with a higher voltage power supply. This can damage the
booster and/or cause personal injury.
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TROUBLESHOOTING
Outdoor Antenna
CM200
5dBi
Cable Attached
Coax cable, CM174
10’
2.8dB/4.9 dB at
Cellular/PCS band
Indoor Patch
Antenna
CM110W
3dBi
Cable Attached
Coax cable CM174
10’
2.8dB/4.9 dB at
Cellular/PCS band
Outdoor Antenna
CM288W
Galaxy 5412-P
3dBi
3dBi Sold in Shakespeare®
Aura marine kit
CM240 Cable
CM004-40FN
40Feet
-3.9dB at 800MHz
-6.0dB at 1900MHz
Indoor Panel
Antenna
CM248W
7dB at 800MHz
10dB at 1900MHz
CM240 Cable
CM004-20FN
20Feet
-1.95dB at 800MHz
-3.0dB at 1900MHz
Outdoor Antenna
CM288W
3dBi
CM240 Cable,
outdoor side.
CM004-40FN
40Feet
-3.9dB at cellular
band
-6.0dB at PCS band
Right Angle Antenna
CM120
3dBi
Troubleshooting
Flex2go - Other Kitting Options
Vehicle Kit
Component Prod No. Descritpion Gain/Loss Notes
Marine Kit
Component Prod No. Descritpion Gain/Loss Notes
Desk top/RV Kit
Component Prod No. Descritpion Gain/Loss Notes
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TROUBLESHOOTING
Problem
Resolution
Booster has no power
1. Verify that the switch on the power supply is
turned on and red LED is ON.
2. Connect the power supply to an alternate power
source.
3. Be sure the power source is not controlled by a
switch that can remove power from the outlet.
4. Check the green POWER LED on the booster. If
it is OFF, return the power supply to SureCall.
Contact tech support at 1-888-365-6283 to
receive a Return Merchandise Authorization
(RMA), email support@surecall.com, or go to
surecall.com and log on via online support
In the unlikely event you encounter a problem, use the following steps to identify and
resolve the issue.
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TROUBLESHOOTING
Problem
Resolution
After installing the
booster system, you
have no signal or
reception where your
car is parked.
1. Check the outside signal closest as you can to
the outside antenna. To measure your existing
cell signal:
Apple iPhoneD: dial *3001#12345#*and press
Call. In the top-left corner, a number replaces the
bars.
Android devices: download apps to measure
exact signal strength, such as Network Signal
Info in Google Play store. Search "check real
signal strength" to find other cell signal
measurement apps.
2. Double-check cable connections to both
antennas and booster.
3. Be sure your booster's dB gain is turned up to at
least 40dB - 45dBon each dial.
One of the red lights
next to the dials on
your booster is
flashing.
1. Turn down the dB gain on the dial until the light
goes OFF or turns yellow.
2. Be sure the inside panel antenna is facing away
from the outside antenna.
3. Use the recommended 6-10 ft. of antenna
separation:
• 50dB 30-40 ft. separation
• 45dB 20-30 ft. separation
• 40dB 10-20 ft. separation
• 35dB 10 ft. separation
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TROUBLESHOOTING
Problem
Resolution
Your booster restarted
and shut down for 15
minutes, and is now
shut down
permanently.
Each SureCall booster is equipped with Auto
Shutdown if there's danger of cell tower
interference. The location where your car is parked
may be too close to a cell tower. Drive to a location
that provides sufficient distance from the cell tower
to prevent the booster from automatically shutting
down. Once away from the original location, use
the power supply switch to restart the booster
manually.
Record the model and serial number for your products:
Serial #: ______________________________________________________
Purchase Date: ________________________________________________
If the booster interferes with your radio or other electronic receivers, move the
booster further away from those devices.
For a list of Frequently Asked Questions and a comprehensive, up-to-date
Troubleshooting Guide, please visit our website at: www.surecall.com.
You can also consult a SureCall technical specialist directly by emailing us at
support@surecall.com or call us at 1-888365-6283.
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SPECIFICATIONS
Specification
Flex 2Go Kit (CM-FLEX2GO )
Uplink Frequency Range (MHz):
824-849 1850-1910
Downlink Frequency Range (MHz):
869-894 1930-1990
Supported Standards:
GSM,CDMA,EDGE,HSPA,EVDO,LTE
Input/Output Impedance:
50
Average Gain:
50dB
Noise Figure:
5dB
VSWR:
2.0
DC Car Charger:
12 V
Maximum Output Power:
1W EIRP
Cable:
RG58
RF Connectors:
FME Male (both ends) or N
Power Consumption:
<10W
Dimensions:
7” x5” x 1”
Weight:
1 lb 11 oz
FCC ID (USA):
RSNFLEX2GO
Specifications
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FCC INFORMATION
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 specified 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.
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WARRANTY
Warranty
1. SureCall, Inc. 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 specifications. The limit of liability under this
warranty is, at SureCall, Inc.’s option, to repair or replace any product or part
thereof which shall within TWO YEARS of purchase as determined by
examination by SureCall, Inc., prove defective in material and/or
workmanship. Warranty returns must first be authorized in writing by SureCall,
Inc. Disassembly of any SureCall, Inc. product by anyone other than an
authorized representative of SureCall, Inc. voids this warranty in its entirety.
SureCall, Inc. reserves the right to make changes in any of its products
without incurring any obligation to make the same changes on previously
delivered products.
2. As a condition to the warranties provided for herein, the Buyer will prepay the
shipping charges for all products returned to SureCall, Inc. for repair and
SureCall, Inc. will pay the return shipping with the exception of product
returned from outside the United States in which case the Buyer will pay the
shipping charges.
3. 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
specifications or which are not defective or not covered by this warranty.
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48346 Milmont Drive
Fremont, California 94538
USA
888.365.6283
Fax: 510.996.7250
www.surecall.com
SureCall has made a good faith effort to ensure the accuracy of the information in
this document and disclaims the implied warranties of merchantability and fitness for
a particular purpose and makes no express warranties, except as may be stated in
its written agreement with and for its customers.
SureCall shall not be held liable to anyone for any indirect, special or consequential
damages due to omissions or errors. The information and specifications in this
document are subject to change without notice.
Copyright © 2013. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective
owners.
3G Vehicle/Desktop Cell Booster & Kit User Guide
December 16, 2013
CM-VFLEX2-50 (20130228) V1.3
Flex 2G Kit for vehicles (CM-FLEX2GO) SureCall, Inc. Page 16
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