SUNFORD ELECTRONICS SF003 User manual

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SF003
Cell phone booster
Installation Guide
A cell booster specially created for the young
SUNFORD
[e-mail]
3-year manufacturer‘s warranty

CATALOG
Package Contents
Inside Antenna Placement
STEP 1:
Power Up The Booster & Optimize The System
Troubleshooting
Safety Guidelines
Specifications
Warranty
Mount & Point Outside Antenna Toward Nearest
Cell Tower
STEP 2:
Preparation
Route & Connect Outside Antenna To Booster
STEP 3 :
Route & Connect Inside Antenna To Booster
STEP 3 :
STEP 4:
Measuring Booster Performance
Light Patterns
1
2
14
16
17
19
20
21
5
10
11
13
3

Package
Contents
1
Booster
Loft 3L
Inside
Antenna Outside
Antenna
Power
Supply
Roof/Pole
Mount
Bracket
Wall Mount
Bracket
2*30 ft of
3D-FB
Cables

Preparation
You Will Need (tools not included)
Make sure the following materials are prepared and ready for your
installation.
NOTE: These instructions will walk you through a “soft” install process to
find the optimal locations for the inside and outside antennas, then
through the process of the permanent installation.
1 to 2 hours
2 people (a person to help with antenna calibration)
Ladder
Drill (if routing cable through wall)
1”-3”diameter existing pole for mounting
Outdoor Antenna (Pole Mount can be purchased
separately if needed)
Recommended: Power Strip with surge protection
2

Step 1: Inside Antenna
Placement
Choose right position for the indoor antenna
• 1 feet away from any other metallic objects
• 3 feet away from any windows
Place the Inside Antenna where you need the greatest signal boost and
place Booster in your desired location.
NOTE: Do not connect booster to power until the system is fully installed.
3

(STEP1cont.)
Booster Placement
Mount the booster
• Choose a ventilated and dry place
• Keep away from heat
• Don't cover booster
Booster will about 30 degrees Fahrenheit higher than the ambient
temperature, which is a normal phenomenon.
4

Step 2: Mount & Point
Outside Antenna Toward
Nearest Cell Tower
Pole mounting and wall mounting options are included. The pole
mounting option is preferred because it will be easier to adjust to the
direction of the cell tower.
Attach the Mount to the Outside Antenna and use the Bracket Clamps
to attach the Antenna to a pole or exhaust pipe.
Make sure that the outside unit is mounted at least 3 feet away from any
windows.
Outdoor antenna must be installed over the roof line.
NOTE: Mounting on existing roof exhaust pipe would be a
good time-saver option. Watch out for power lines. 5
①②
③

Point the Outside Antenna toward the nearest cell phone tower. To find
the nearest tower, use an app such as 'Open Signal'. This is the most
critical step of the installation process because it will determine the
overall performance of the booster system.
6

NOTE:
The Outside Antenna must be at least 40 feet (12 meters) Straight line distance or
30 feet (9 meters) horizontal
20 feet (6 meters) vertical from the Inside Antenna for best performance.
Keep enough distance between outside and inside
antenna
The greater the separation between the Inside and Outside Antennas,
the better performance you will get from the booster.
7

Select the optimal mounting location for the outside
antenna
8
After identifying the area of strongest signal, choose the surface where
you will mount your outside antenna.
1. The location should allow for sufficient separation between the outside
antenna and inside antenna.
2. In order to better receive external signals, the outside antenna is best
installed in a higher position on the house, but please pay attention to
lightning protection.

Antenna mutual position
9
The outside antenna should
be oriented in a way that it
does not “face”the inside
antenna.
Caution: Do not aim an
outside antenna towards
inside antenna.
Caution: The inside antenna
cannot face the outside
antenna.

Step 3: Route & Connect
Outside Antenna To Booster
Connect the white 3D-FB Cable to Outside Antenna and route cable into
the home, secure the cable near the antenna. All connections should be
finger tightened only.
Route cable to the Booster and connect to the port labeled 'OUTSIDE'.
10

Step 3: Route & Connect
Inside Antenna To Booster
Connect the Inside Antenna to the 'INSIDE' port on the booster.
11

(STEP3‐Acont.)
12
FastenbrackettobackofInside
Antenna
Securebrackettowall
Drillholes
Tapanchorsin
MountingInside
Antennaonwall
bracket
sideview
Wall Mounting Option

Step 4: Power Up The
Booster & Optimize The
System
Plug in the Power Supply and connect it to the nearest power outlet.
NOTE: We strongly recommend using a power strip with surge protection.
Outside Antenna
Inside Antenna
Booster
Power Supply
13

Measuring Booster
Performance
How To Get Signal Strength As A Number
iPhone®
Android™
iOS 11 and later no longer displays the decibel (dBm)
reading in 'Field Test Mode'. Tip: Using the dot signal
strength indicator on your cell phone can assist you in
finding the strongest signal direction as well as placing
calls in different locations.
Settings > About Phone > Status or Network > Signal
Strength or Network Type and Strength (exact
options/wording depends on phone model).
Android: download third part APP-LTE Discovery
iPhone is a registered trademark of Apple Inc. Android is a trademark of Google Inc.
Dial *3001#12345#* then press Call.
1 Hold down power button until you see 'Slide to
Power Off'.
2 Then release the power button.
3 Hold the Home button until your main screen appears.
If you want to check 3G/1x but your iPhone is picking up 4G/
LTE signal, go to Settings>Cellular>Cellular Data
Options>En_x0002_able .LTE>Select Off.
After you system is set up, you can go back to the dots signal
by once again dialing *3001#12345#* then pressing call.
When the menu comes back up, tap “phone” in the top left
corner of your phone.
iPhone®
iOS 11 - current
14

DIDYOUKNOWasignalincreaseofjust3dBis2timesthe
powerandsignalamplification!
(MEASURINGBOOSTERPERFORMANCEAFTERINSTALLATIONcont.)
Signalstrengthat6feetfromindoorantenna
Notehere:
Signalstrengthat6feetfromoutdoorantenna
Notehere:
CompareResults
Ifthesignalstrengthindecibels(dBm)at6feetfromtheindoor
antennais15‐20dBhigherthanthesignalstrengthat6feetfromthe
outdoorantenna,thenyoursystemhasachievedtheoptimumresults.
Note:Sinceitisanegativenumber,thesmallerthenumber,the
greaterthesignalstrength.
How To Confirm That Your Installation Is Correct And
Effective?
dBm
dBm
Havinganaccuratemeasurementofsignalstrengthindecibels(dBm)is
crucialwheninstallingyoursystem.Decibelsaccuratelymeasurethesignal
strengthyouarereceiving.
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Light Patterns
BandIndicatorLightsSolidGreen:
• Every time the power is powered on, all the band
indicators will turn orange for about 1 second. This
indicates your booster has passed the self-test
and is in good condition. When the booster is
functioning properly, all the band indicators will
remain solid green during operation.
DCPowerIndicatorCorrectFunctioning:
• Power Light should be solid green after powered on.
BandIndicatorLightsBlinkingRed:
• Band has reduced gain. Which lights blinking indicate that the corresponding
bands have reduced power due to a feedback loop condition called oscillation.
This is a built in safety feature to prevent harmful interference with a nearby cell
tower. If you are already experiencing the desired signal boost, then no further
adjustments are necessary. If you are not experiencing the desired boost in
coverage then refer to the Troubleshooting section.
BandIndicatorLightsSolidRed:
• Band has shutoff. This is due to a feedback loop condition called oscillation.
This is a built in safety feature that causes a band to shut off to prevent harmful
interference with a nearby cell tower. Refer to Troubleshooting section.
DCPowerIndicatorOff:
• Please check your outlet, make sure it is normal.
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Troubleshooting
IF YOU ARE HAPPY WITH THE COVERAGE, THESE LIGHT ISSUES DON'T HAVE TO
BE RESOLVED. YOUR CARRIER'S BAND HAS NOT BEEN AFFECTED.
FIXING ANY BAND INDICATOR LIGHTS BLINKING
RED ISSUES
Band Indicator Lights Blinking Red
1. Band Indicator Lights Blink 1 To 15 Times ( 1 cycle) Then Turn Green
That means the gain lowered 1~15 dB. If your coverage is good and reception
is good, you can ignore the blink; If you would like greater coverage and better
reception, please increase the distance between the outside antenna and
inside antenna to improve the gain.
2. Band Indicator Lights Blink All The Time
That means the gain lowered 16~25 dB. Please increase the distance
(horizontally or vertically) between the outside and inside antenna to solve the
oscillation problem. Check and install the whole system again.
FIXING ANY BAND INDICATOR LIGHTS SOLID RED
ISSUES
Band Indicator Lights Solid Red
That means shut down. Please increase the distance (horizontally or vertically)
between the outside and inside antenna to solve the oscillation problem. Un-
plug and re-plug in power supply. Check and install the whole system again.
17

How to solve the problem of oscillation:
1. Keep enough distance between inside and outside antenna
Minimum Required Separation Distance Between Inside and Ouside Antenna:
Straight line distance over 40 feet(12 meters) or
30 feet (9 meters) horizontal distance
20 feet (6 meters) vertical distance (as far as possible).
2. Verify outside and inside antenna face away from each other.
3. You may need to undo and redo the connection completely. Un-plug and re-
plug in power supply.
FIXING ANY BAND INDICATOR LIGHTS SOLID
ORANGE ISSUES
Band Indicator lights Solid Orange
That means corresponding band has shutoff due to interference from other
band signals.
Outside antenna need to be adjusted.
Pole Mount Option: Rotate the outside antenna away from the strongest
cellular signal in small increments(45°). Then power on again and to see if the
band indicator light is solid green.
Mounting on side of roof option: Change mount location or increase the
distance between the outside and inside antenna. Move the outside antenna to
location of the home/building. Then power on again and to see if the band
indicator light is solid green. Then secure in place.
FIXING DC POWER INDICATOR OFF ISSUES
Please verify your power supply has power;
Please verify the power cord is tightened;
Contact with us by email or call for replacement.
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