FCC ID: 2ALGR-SF50 cell phone signal booster

 





CONTENTS

1. TheRepeaterSystem. ........................................................................... 1

2. PackageContents. .............................................................................. 2

3. Installation. .......................................................................................... 3

3.1. InstallationofOutdoorAntenna .......................................................... 6

3.2. Installation LocationRequirement.. ................................................ 11

3.3. Cable Layout and ConnectorAssembly ......................................... 14

3.4. Switch on the Power ..................................................................... 15

3.5. Check Coverage. .......................................................................... 15

4. Attention. ........................................................................................... 19

5.Troubleshooting.................................................................................... 20

6.Safety Reminder& Warning. ................................................................ 22

7.Warranty..............................................................................................24



Introduction:

The booster is designed to realize the wireless forwarding and bidirectional

amplifying of the base station’s signal, expand the coverage of communication

signal and cover its blind zone. When booster is working, the outside antenna

(connecting to the OUTDOOR or BTS Port of booster) will receive the cell signal

from signal tower and send the signal to the booster through coaxial cable;

then the booster amplifies the signal and send the boosted signal to the inside

antenna (connecting to the INDOOR or MS Port of booster); finally, the inside

antenna could transmit the signal into your house.

The cell phone signal booster will only make a weak signal stronger,

it can't create a signal. It won't work if the outdoor antenna can't receive any signal.

The outdoor antenna should receive 2-3 bars of stable signal in the location

where the outdoor antenna is fixed; otherwise, the booster won't work very well.

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1.SignalBooster

2.IndoorAntenna

3.OutdoorAntenna

4.50 ft Outside CoaxialCable

5. PowerAdapter

6.16 ft Inside Coaxial Cable

7.UserManual 8.Screws Accessories

You should receive the Mobile Booster kit which includes the similar

above-mentioned fittings.Before installing, please confirm your purchased

booster’s frequency is corresponding with your cell phone frequency; if not

corresponding, the booster would not amplify any signal.

Commonly-used operator’s frequency is as follows:

Band

2

4

5

12

13

17

Uplink (UL)

Downlink (DL)

UL_low – UL_high

DL_low – DL_high

1850 MHz

1910 MHz

1930 MHz

1990 MHz

1710MHz

1755 MHz

2110MHz

2155 MHz

824MHz

849 MHz

869 MHz

894MHz

698 MHz

716 MHz

729 MHz

746 MHz

776MHz

787MHz

746MHz

757MHz

704MHz

716MHz

734MHz

746 MHz

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Step 1: Connect Inside Antenna To Booster

Option A：Mount the Indoor Ceiling Antenna

Installation Steps:

30mm maximum.

1. Drill a 20mm diameter hole in the ceiling. The ceiling thickness should be

2. Unscrew fixing nut from the antenna. Place antenna cable through the hole.

Screw the fixing nut back onto the antenna, and go through the cable from the

crawl space side of the ceiling and fasten.

3. Attach the connection from the indoor antenna to the connector labeled

INDOOR on your booster.

4. Tighten fixing nut to secure antenna (do not over-tighten).

Note:The Ceiling Antenna is suitable for central locations with 360-degree

coverage, please mount it on the ceiling in a central location.

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Option B：Mount the Indoor Panel Antenna

Installation Steps:

1. Using the plate mark the position of desired screw placement.

2. Screw mounting plate into place with the slide protruding towards up.

3. Hang the antenna securely onto the mounting plate.

4. Connect the antenna short cable to the 15ft cable and run to the planned

location of your booster.

. 5. Place the booster on a flat surface or mounted to a wall and connect

the remaining end of the cable to booster port marked INDOOR.

Note:

1. The Inside Panel Antenna should be facing the area signal is needed and

away from the outdoor antenna (See “Aiming Panel Antenna” below).

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2.The installation location is the approximate height of normal cell phone use.

3. The Inside Panel Antenna is directional with a 180-degree reach,

it should be mounted on a vertical surface or wall where there are no

materials that could obstruct signals.

4. It is better to use a directional panel antenna when the shape of coverage

is longand narrow (corridors, long row of houses in tow sides, tunnels,

elevators or rural open space).

5. Do not connect booster to power until the system is fully installed.

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Step 2 : Install the Outdoor Antenna

The directional Yagi, Panel, LPDA or Omni Antenna should be mounted at the

highest possible location above the roof line ‒ at least 25 feet above the

indoor antenna ‒ aimed in the direction of your nearest carrier’s cell tower.

To find the location of your closest carrier’s cell tower,

go to www.antennasearch.com.

Ensure that the mounting area has at least a 12 inches radius clear of

obstructions, other radiating elements and metal objects such as pipes or

metal siding. Once you have identified your install location,

assemble the u-bolt, bracket, nuts and washers onto a pole

(available separately) as shown in the illustration. Keep the connections loose

enough to allow the antenna to rotate until the optimum direction is found.

Run the cable along route to planned location of your booster.

Option A: Mount the Directional Outdoor Panel Antenna

Find a best signal place at a high location outdoor.

Installation Steps:

1. Attach the L-Bracket to the Outside Panel Antenna and use the U-

Bolts/Pole Bracket to attach the L-Bracket to a pole.

Let the peak of Panel antenna pointed to the cell tower.

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Option B: Mount the Directional Outdoor LPDA Antenna

Installation steps:

1. A drill hole at the LPDA antenna bottom , and the drill hole should

be face the bottom side.

2. Fix the LPDA antenna on a long pole/mast/tube with U-bolt and Brackets,

tighten the the L-bracket with each washers nuts .

3. Fix the LPDA antenna at the L-bracket with screws

4. Let the peak of LPDA antenna pointed to the cell tower .

Option C: Mount the Directional Outdoor YagiAntenna

Installation Steps:

1. Fix the Yagi antenna on a long pole/mast/tube with 2 U-bolt s,

tighten them with each washers nuts .

2. Let the peak of Yagi antenna pointed to the cell tower .

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Option D:Mount the Omni-directional Antenna

Installation Steps:

1.Assemble the u-bolt, bracket, nuts and washers onto a mast (not

provided) as shown in the illustration.

2.Connect one end of the provided coax cable to the antenna and

tighten the connection.

Note:

1.The Omni Antenna receives and sends signals in a 360-degree

radius. Mount the antenna at the highest possible elevation and in

an upright position.

2.Ensure that the entire outside antenna is above the roof

line of the building and is at least 12 inches away from any

metal obstructions and other radiating elements.

3.The minimum distance between outdoor antenna and indoor antenna

shall be more than 39ft; and the direction of outdoor and indoor antennas

shall be opposite.

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Step 3: Route & Connect Cable To System

Connect the white 50ft Coaxial Cable to the Outdoor Antenna and route

cable into the home. All connections should be hand tightened only

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Note: The connector need to add waterproof tape

Step 4: Power Up The Booster & OptimizeThe System

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Plug the Power Supply into wall outlet then connect to Booster.The minimum distance

between outdoor antenna and indoor antenna shall be more than 39ft, again.

Therepeatersshouldbeusedtocovertheindoorarea.Humidityandtemperatureofworking

environmentcanaffectthereliabilityofrepeater.so,temperature,humidity,dust,interference,p

ower,spacerequirementsandotherfactorsshouldbeconsideredduringinstallationof

repeater.

3.1 Installation LocationRequirement

（1） It is important that the repeater is installed in a place where is away from excessive

heat, direct sunlight, moisture and with proper ventilation. Do not place the repeater in

an air-tightenclosure.

（2） Installation height should be easy for RF cable wiring, heat dissipation, security and

maintenance.

（3） There should be an independent and stable powersupply.

（4） Lightning protection is recommended for all in-building installations. Take extreme

care to ensure neither you nor the antenna come in contact with any electrical power

lines.stability.

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3.2 Installation of Outdoorantenna

The repeater’s main function is improve weak RF signals of an area. A simple formula:

Input power+ Gain=output power. The signal strength from the outdoor antenna directly

affects the efficiency of the indoor coverage. it is very important to choose the outdoor

antenna location in order to get the best signals.

Testing the signal strength received from outdoor antenna by mobile phone:

Select an outside antenna location on the roof of the building to install the outdoor

antenna, using a cell phone to find the strongest signal from the celltower.

The phone calls or data transmission shall be smooth and stable by 3 times testing in

location

Fix the outdoor antenna after selecting the best position, and adjust height or angles

slightly in order to get the best signal with suitable input power level and calling quality.

TestthecallqualityofOutdoorantenna(forprofessionalinstallationteamonly）

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Selecting the installation direction of outdoor antenna.

The outdoor antenna should point in the direction of the tower, and it is much better to

keep line of sight.

Select opposite directions for outdoor antenna and indoor antennas. Please test the signal

quality and make sure to avoid self-oscillation first, if have to install Outdoor and Indoor

antennas in the same direction. If the directional antenna is selected, the main directional

angle should point to the tower antenna.

If the performance is poor due to weak signals or poor phone call quality, please adjust the

direction of outdoor antenna or change its position in order to obtain the best calling effect.

The wide band repeater supports all mobile operators or different mobile systems, so

please adjust the outdoor antenna direction to have a balance between signals of different

mobile operators or various mobile systems.

Outdoor antenna installation---Notes:

Do not install the outdoor antenna during the rainy day with lightning. Please follow the

instructions to install the outdoor antenna.

It is very important to waterproof the connectors of outdoor antenna and feeder lines.

In order to avoid interference, please note that the outdoor antenna should be far away

from objects of metal, high voltage line, RF antennas and high voltagetransformer.

Repeater is a tow-way signal amplifier. So proper isolation between outdoor antenna and

indoor antenna is necessary to avoid self oscillation. (About the definition for self

oscillation, take the MIC and loudspeaker for example, if it is too close for each other, it

could make loud noise.)

As shown in the below illustration, the booster amplifies the downlink signal from the tower

and send to the indoor antenna hereafter. If the distance between outdoor antenna and

indoor antenna is less than the required distance, the amplified signal R will go back from

indoor antenna to outdoor antenna. So it will lead to self oscillation and reduce the

coverage area, also the bad calling quality could happen at the same time, and the worse

is that mobile network could be influenced badly and the operators will finally come to shut

off the repeater system.

The minimum distance between outdoor antenna and indoor antenna shall be more than

39ft; again, the direction of outdoor and indoor antennas shall be opposite. For example,

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3.3 Cable layout and connector assembly

Connect cables to the booster’s ports after installing and fixing outside and inside

antennas.Steps as below:

（1）Open the cable package and make it bend naturally and smoothly.

（2） Keep horizontal cables straight and fasten them with a fixing clip every 1 to 1.5

（3）The cable should be bent naturally and smoothly to avoid cable damage caused by

meters.

strong pulling.

（4）RF cables should be separated from power cables; If the site condition are limited,

installing RF cables and power cables together may affect product performance.

（5）Tighten all cable connections to ensure a good contact.

（6）Offer waterproof treatment to the exposed cable ends to avoid oxidation.

（7）Finish the cable layout

At last, plug the Power Supply into wall outlet and enjoy

yourboosted cell signal!

The Specification of Boosters’Ports:

Port

Name

DC12V

OUTDOOR

INDOOR

Port

description

Adapter 12V

input

Base station downlink signal

reception, mobile phone uplink

signal transmission

Base station downlink signal

transmission, mobile phone

uplink signal reception

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V port: the port

t for connecting

g the power ada

apter to the hos

st.

DOOR port: the

xial cable and h

connection po

host

rt between the

outdoor antenn

na’s

OR port: the co

e and the host.

onnection port b

between the ind

door antenna’s

Coaxial

3.4.Switc

ch on the powe

er

Plug in the

e power adapter

r, the LED display

y light up

screen func

tion

the Amplifie

s on the host

mation, worki

s of the host

ng modes:

he host wor

rks normall

y:

er system is

t, and the LC

ing frequency

t. The Amplif

installed,

CD screen di

y band, power

fier host ha

the power ad

splays the am

r, and the w

s the follow

apter

mplifier

orking

ing

(1) DC12V

(2) OUTD

Coax

(3) INDOO

cable

 

LCD s

After

powers

inform

status

workin

A：Th

When the host is w

rid displays the si

working normally, t

gnal strength in re

the LCD screen d

eal time:

isplays the conten

nt, and the

Note:W

signal g

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he Host slee

ep:

B: Th

Note:

amplif

which

C: Ho

When the hos

fier system to

saves energy

st detects that

communicate

y and protects

t there is no m

, the host will

the environm

mobile phone u

enter the slee

ent.

using, the

ep mode,

ost receiving

signal is too

strong

Note:

many

the req

The outdoor s

signals. When

quirements, n

signal is too st

n the host is in

o adjustment

trong, and the

n this mode, if

is needed.

e host receives

f the signal can

s too

n meet

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D: Host

self-oscillati

on

The indoor and

er toself-oscilla

tdoor antenna to

ce from the indo

outdoor antenn

ation. You need

o try to keep the

oor antenna.

nas are too close

to power off the

e outdoor anten

e, causing the S

e host, and then

na at the maxim

Signal

n adjust

mum

 

 

Note: T

Amplifi

the out

distanc

 

 

3.5. Ch

e

heck Coverage

(1) Perfo

ormatestwithamo

bilephoneordatac

cardCheckbelow:

- A weak

k input signal lead

ds to the low outp

put power. Need to

o change the dire

ection

of outdo

oor antenna or its

installation positi

on or replace out

door antenna wit

h

higher g

gain antenna to in

crease input sign

nal powerlevel.

- Check

whether it is nec

essary to add mo

ore Indoor antenn

as’ sine barriers t

to

- block t

the signal penetra

ation, and check w

whether the repea

ater’s power is en

nough.

Installmo

oreIndoorantenna

asorreplacewithar

repeaterofhigherp

powerlevel.

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(2) If the signals in small part of the areas have not been improved,please check

below:

- Check whether the service antenna is installed correctly or not, you may need to

move the antenna location to improvecoverage.

- Checkifitisnecessarytoadjustthedirectionoftheserviceantenna.

-Check whether it is necessary to add one or more antennas to enhance the

coverage of special areas.

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1. The signal booster will only work with the correct frequency, so please make

sure yourphonesignaliswiththesamefrequencyasthesignalbooster.

2. This cell phone signal booster will only make a weak signal stronger, it can't

create a signal. That means it won't work if the outdoor antenna can't receive

any signal.

3. The outdoor antenna should receive 2-3 bars of stable signal in the location

where the outdoor antenna is fixed; otherwise, the booster won't work very

well.

4.Must connect the antennas first, and then switch on the power; otherwise,

may damage therepeater.

5. Determine the best location where the highest signal strength is received on

your phone (most amount of bars). Once you ascertain the best location, then

permanently mount the outdoor antenna. Keep the distance between the

outdoor antenna and indoor antenna more than39ftand make sure that there is

a proper physical separation between the outdoor antenna and indoor antenna.

The above thingsareofcriticalimportancetotheboosters'normalworking.

Reason 1: There are loose or wrong connections in the repeater system.

Solution:Checkthattheconnectionsbetweenthedifferentpartsofthe

system are hooked up correctly andtightly.

Reason 2: The signals of other operators nearby received by outdoor antenna

aretoostrong.(Forexample,theotheroperator’ssignalsare10dbstronger

than the needed signals).

Solution 1: Change the direction of outdoor antenna or its installation position,

so that the gap of signal strength is reduced between operators.

Solution 2: Use barriers ( like buildings ) to block signals of other operators

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Remark: 

strength.

Increase the output power*---Recommended ways: adjust the outdoor antenna

direction/location, or replace with a higher gain antenna to increase input signal

You should receive the Mobile Booster kit which includes the similar above-

mentioned fittings. Before using it, please confirm that your Booster’s frequency

range is the same as your service provider’s network, otherwise, the amplifier will not

work properly.

Q1: The Signal Amplifier displays a Self-oscillating Alarm.

- A. Increase the distance (horizontally or vertically) between the Outside and Inside

antenna; Verify there is wall isolation between them.Unplug and re-plug in power

supply.

- B. Tighten all cable connections (be sure to hand-tighten only, do NOT use

tools).Unplug and re-plug in power supply.

- C. Verify the receiving antenna if be damaged.

- D. Adjust the location of outside antenna.Unplug and re-plug in power supply.

Q2：Plug in the power adapter, the LED display is not light up

- A.Unplug and re-plug in power supply.

- B.Re-connect the DC12V port on booster

Q3: The LED display is normal, but there is not any change with signal strength.

- A.Verify the receiving antenna if be damaged.

- B.Tighten all cable connections (be sure to hand-tighten only, do NOT use tools).

- C.Verify whether the outside and inside antennas connects to correct booster’s

- D.Verify whether the booster’s frequency is corresponding with cell phone

port.

frequency.

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call.

Q4: After

finishing the inst

tallation, cell pho

one signal is impr

roved but can’t

make a

- A.Veri

- B.Veri

direction

fy outside antenn

fy the location m

n of outside ante

- C. Ver

rify whether the l

with boo

oster’s frequen

na is mounted co

mounting outside

enna is pointed to

ocal operator’s

ncy.

orrectly.

antenna has sta

owards to the ce

ble signal,and co

ll tower.

onfirm the

s communication

frequency is con

nsistent

Q5: Ph

- A.Adju

nearest

- B.Re-

too muc

-C.Verif

( Too c

isolatio

don't be

one calls and In

ust the direction

t cell tower.

route the cable

ch, trying to cho

fy the distance b

lose distance m

n between them

e mounted on th

nternet access a

of outside ante

re in poor qualit

nna and keep it

ty.

t point towards t

he

from outside an

oose straight line

between outside

ay result in self-

m.It is recommen

he same horizon

tenna to booste

e).

e and inside ante

-oscillating),and

nded that inside

ntal level.

er (Don't bend th

he cable

ennas is over 40

there should ha

and outside ant

0 feet

ave wall

tennas

Q6. Ce

- A.Adju

- B.Ver

- C.Tigh

ell phone signal

ust the angle of

ify the place mo

hten all cable co

the coverage is

is improved but

a.

inside antenna

antenna receive

ounting outside a

onnections.

unsatisfied.

s a strong enou

gh signal.

Q7. How

Not all o

location

w to register the

of consumers req

n requirement. w

booster with Ser

quire to register t

ith registration st

rial Number ?

the booster . It d

teps for your refe

epends on your

erence

area

Step 1:

Open the follow

wing registration L

Link given

www.wav

eform.com/page

es/guide-to-signa

l-booster-registra

ation

Step 2:

Click an

Find out mobile

nd Enter

phone service p

provider that com

patible with your

r booster.

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Step 3: Fill in your Location information and Booster's Serial Number,

The Serial Numberisthe FCCID,(on the label on the back of Booster unit )

TheFederalCommunicationsCommission(FCC)hastestedthisproductan

dfound

ittocomplywiththeirRFExposureRequirements,pursuanttoFCCPart22an

d24.

Don’t expose this product to extreme low or high temperature ( -20 and ℃

55 ).℃

Thereareonconsumerserviceableormodifiablepartsinsidethisboosterpro

duct. Alteration or abuse of the booster or other components will void

this product’s warranty, and could be dangerous to theuser.

Repeater should follow system requirement of communication

equipment, assure good grounding and lightningprotection.

The power supply voltage of repeater should meet the standards

of security requirement; any operation shall be carried out only after

cutting off only the professional is authorized for theoperation.

Do not dismantle machine, maintain or displace accessories by

yourself, because in this away, the repeater, touch the module ofrepeater,

or module to touch the electronic component. The components will be

damaged due to electrostatic.

Do not open the repeater, touch the module of repeater, or

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moduleto the electronic component. The components will be damaged

due to electrostatic.

FCC Statement

Changes or modifications not expressly approved by the party responsible for

compliance could void the user's authority to operate the equipment.

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.

-- Connect the equipment into an outlet on a circuit different from

that to which the receiver is connected.

-- Consult the dealer or an experienced radio/TV technician for help

This device complies with part 15 of the FCC rules. Operation is subject to the

following two conditions (1)this device may not cause harmful interference, and (2) this

device must accept any interference received, including interference that may cause

undesired operation.

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30-day money-back guarantee, 3-month free replacement,

2-year manufacturer warranty

Our Signal Boosters are warranted for 2 years against defects in workmanship

or materials. Warranty cases may be resolved by returning the product directly

to the manufacturer at the consumer’s expense, with a dated proof of

purchase and an Order Number supplied. We shall either repair or replace the

product at its option. This warranty does not apply to any Signal Boosters

determined by us to have been subjected to misuse, abuse, neglect, or

mishandling that alters or damages physical or electronic properties.

Replacement products may include refurbished products that have been re-

certified to conform with product specifications.

Label:

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Complete list of authorized antennas, cables, and cable loss:

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26

Warning ：Unauthorized antennas ， ，cables and/or coupling devices are

prohibited by FCC rules. Please contact FCC for details ：1-888-CALL-FCC

Fixed stations operating in the 1710-1755 MHz band are limited to a

maximum antenna height of 10 meters above ground.

27



 

 

 

 

 

 

 

 

 

 

Label Artwork and Location

Model:SF50

Label:

Product :cell phone signal booster

Model: SF50

Maximum Gain: Uplink:60 ± 2 dB

Downlink:60 ± 2 dB

Frequency Range(Band 13): Uplink:776-787MHZ

Frequency Range(Band 12/17): Uplink:698-716MHZ

Frequency Range(Band 5): Uplink:824-849MHZ

Frequency Range(Band 4): Uplink:1710-1755MHZ

Frequency Range(Band 2): Uplink:1850-1910MHZ

FCC ID：2ALGR-SF50

Downlink:1930-1990MHZ

Downlink:2110-2155MHZ

Downlink:746-757MHZ

Downlink:728-746MHZ

Downlink:869-894MHZ

Size:L*W=70*50mm

Location



 

 

Shenzhen Fuzhixing Electronics Co., Ltd. Agent Authorization Company: Shenzhen Fuzhixing Electronics Co., Ltd. Address: 5/F, Block C, Penglongpan Hi-technology Park, Dafu Ind. Zone, Guanlan, Longhua New Dist., Shenzhen, Guangdong, China Product Name: cell phone signal booster Model Number(s): SF50 Product Description: cell phone signal booster We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Name:

Fuyuan Zhang Title:

CEO Company: Shenzhen Fuzhixing Electronics Co., Ltd. Date: 2021-08-23

 

 

Photo Name Frequency(

MHz) Gain(dBi) Cabel Loss(dB) Indoor Whip Antenna Indoor Panel Antenna Outdoor Yagi Antenna Outdoor Yagi Antenna Outdoor Panel Antenna 698-716 698-716 728-746 746-757 776-787 824-849 869-894 1710-1755 1850-1910 1930-1990 2110-2155 698-716 728-746 6 5 746-757 776-787 824-849 869-894 1710-1755 1850-1910 1930-1990 2110-2155 698-716 728-746 746-757 776-787 824-849 869-894 1710-1755 1850-1910 1930-1990 2110-2155 698-716 728-746 746-757 776-787 824-849 869-894 1710-1755 1850 1910 1850-1910 1930-1990 2110-2155 3 3 3 3 3 3 3 2.5 2.5 2 2 6 6 5 5 5.5 5.5 5 5 4.5 4.5 4 4 6 6 6 6 6 6 5 5 5 5 5 5 5 5 4.5 4.5 4 4 4 4 4

1.2 1.3 3 1.3 1.3 1.4 1.5 2 2.1 2.2 2.3 3.5 3.6 3.7 3.7 3.7 3.8 4.3 4.5 4.6 4.8 3.5 3.6 3.7 3.7 3.7 3.8 4.3 4 5 4.5 4.6 4.8 Outdoor Omni Antenna Outdoor LPDA Antenna Outdoor LPDA Antenna 698-716 728-746 746 757 746-757 776-787 824-849 869-894 1710-1755 1850-1910 1930-1990 2110-2155 698-716 728-746 746-757 776-787 824-849 869-894 1710-1755 1850-1910 1930-1990 2110-2155 4 4 3.5 3.5 3.5 3.5 3.5 3 3 3 3 8 8 8 8 8 7 7 7 6 6 3.5 3.6 3.7 3.7 3.7 3.7 3.8 4.3 4.5 4.6 4.8 3.5 3.6 3.7 3.7 3.7 3.8 4.3 4.5 4.6 4.8 Default matching Antenna Indoor Whip Antenna + Outdoor Yagi Antenna Indoor Whip Antenna + Outdoor Omni Antenna Indoor Whip Antenna + Outdoor LPDA Antenna Indoor Whip Antenna + Outdoor Panel Antenna Indoor Panel Antenna + Outdoor Yagi Antenna Indoor Panel Antenna + Outdoor Omni Antenna

Indoor Panel Antenna + Outdoor LPDA Antenna Indoor Panel Antenna + Outdoor Panel Antenna

 

 

Aug. 23, 2021

Shenzhen Fuzhixing Electronics Co., Ltd.

Attestation for signal booster:

FCC ID: 2ALGR-SF50

Each Signal Booster certificated under FCC ID: 2ALGR-SF50 is manufactured and individually

tested to ensure FCC compliance:

(1) Licensee consent for Fixed consumer booster has been obtained (consent be made available

upon FCC/TCB request)

(2) NPS and other compliance/safeguard features have been implemented

(3) NPS and other compliance/safeguard features are defaulted to “ON” configuration (in

(4) NPS and other compliance/safeguard features cannot be field reconfigured, disabled or

(5) This Consumer booster is not user programmable, does not need fine tuning or adjustment,

does not require professional installation.

(6) Future software upgrade will not cause non-compliance.

operation)

removed

Yours sincerely,

Fuyuan Zhang



 

 

Shenzhen Fuzhixing Electronics Co., Ltd.

Office of Engineering Technology

Federal Communications Commission

7435 Oakland Mills Road

Columbia, MD 21046

USA

Subject; Request for Long TermConfidentiality

FCC ID: 2ALGR-SF50

Date: 2021-08-23

To Whom It May Concern,

Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we

are requesting the Commission to withhold the following attachment(s) as confidential

documents from public disclosure indefinitely.

These documents contain detailed system and equipment descriptions and are considered as

proprietary information in operation of the equipment. The public disclosure of these documents

might be harmful to our company and would give competitors an unfair advantage in the market.

It is our understanding that all measurement test reports, FCC ID label format and

correspondence during the certification review process cannot be granted as confidential

documents and this information will be available for public review once the grant of equipment

authorization is issued.

Schematic Diagram

Block Diagram

Parts List

Operational Description

Tune-up Procedure

Sincerely,

Signature:

Title: CEO

Name: Fuyuan Zhang



 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shenzhen Fuzhixing Electronics Co., Ltd. Aug. 23, 2021 Subject: Tuning and Adjustment of Signal booster, FCC ID: 2ALGR-SF50 There are no external tuning adjustments, The amplifier is factory set not exceed maximum gains, power levels, and downlink dependent region (RSSI) set points as provided in the test results. Yours sincerely, Fuyuan Zhang