ZBoost SOHO Premium ZB645SL Setup Overview

Base Unit LED Indicators

During Initial Power Up

Light 

Mode

Status

Solution

Cycle 

RED, 

GREEN, 

ORANGE

System is 

powering 

up. Please 

allow up to 

30 seconds.

N/A

Flashing 

GREEN

BASE UNIT will 

flash GREEN 

once for every 

2 dB less than 

optimal system 

gain. Three  

flashes or less 

indicates the  

system will 

still operate 

properly.

1. Unplug the BASE UNIT power supply. 

2. Relocate the EXTERNAL ANTENNA to pick up the 

strongest signal from your wireless carrier. 

3. Move the EXTERNAL ANTENNA as far away from the 

INDOOR ANTENNA as possible, with at least 15 ft. of 

vertical separation (height difference).

4. Plug the BASE UNIT power supply back in.

5. Wait 30 secs. for the BASE UNIT to power cycle on.

Solution #1

After Initial Power Up

Light 

Mode

Status

Solution

SOLID 

GREEN

zBoost is 

ready.

N/A

Flashing 

GREEN

zBoost is 

in use.

N/A

SOLID 

ORANGE

EXTERNAL 

ANTENNA 

and INDOOR 

ANTENNA 

are too close 

together. 

1. Unplug the BASE UNIT power supply. 

2. Move the EXTERNAL ANTENNA as far away from the 

INDOOR ANTENNA as possible, with at least 15  ft. of 

vertical separation (height difference).

3. Plug the BASE UNIT power supply back in.

4. Wait 30 secs. for the BASE UNIT to power cycle on.

Solution #2

SOLID 

RED

Signal from the 

carrier’s cell 

tower is too 

strong for the 

BASE UNIT 

to operate 

properly. 

1. Unplug the BASE UNIT power supply. 

2. Relocate the EXTERNAL ANTENNA to another spot. 

3. If you have a directional antenna re-aim it to reduce 

carrier signal strength.

4. Plug the BASE UNIT power supply back in.

5. Wait 30 secs. for the BASE UNIT to power cycle on.

Solution #3

Flashing 

RED

Excessive 

electronic 

noise in the 

system – the 

BASE UNIT will 

not operate.

^ Refer to Solution #2

SETUP OVERVIEW

zBoost

® 

TRIO 

 Xtreme ZB575X

DMAN-0083 Rev A

Setting Up Your zBoost

®

 Signal Booster

Designed for single-family homes, zBoost cell phone signal boosters extend a Cell Zone 

for multiple devices. Boost 3G and 4G and improve call clarity in 4 easy steps:

STEP 1: Mount the External Antenna. 

Choose a location for the antenna using your cell 

phone to determine the area of strongest signal. The coverage your zBoost booster 

provides is largely determined by the strength of signal received by the External Antenna. 

Before installing, please note the following important factors in determining your zBoost 

performance:

• 

At least 15 vertical feet is needed between the External Antenna (receives the outside 

signal) and the Indoor Antenna (rebroadcasts the signal indoors). Separation less than 15 

vertical feet will result in decreased performance. 

•  Keep the External Antenna at least 3 feet above any metal such as wiring, A/C ducts, 

truss plates, etc. When attaching the cable to the antenna, run the cable straight down 

from the antenna.  Avoid draping the coax near the antenna.

To get the maximum benefit, you will want to take special care in pointing the 

External Antenna in the direction of best signal for your wireless service provider.  If 

you are unsure of the direction of your provider's closest network tower, see the 

Antenna Aiming section of the User Manual at www.zBoost.com or you may wish to 

use a YX699 RF signal meter to help during this process. Once you have determined 

the optimum location and angle, connect the L-bracket to the antenna and secure the 

antenna bracket to a mast (not provided) using the provided antenna hardware.

STEP 2: Place the zBoost Base Unit where you want to create a Cell Zone. 

Connect 

the Indoor Antenna to the Base Unit and place it where you need signal. For the widest 

possible signal area, position the Base Unit near the middle of a room. You may also 

mount it on an interior wall by first removing the bracket, screwing the bracket to a wall 

(screws not included), then snapping the Base Unit back in place keeping the Indoor 

Antenna vertical. The Base Unit uses an omni-directional Indoor Antenna that delivers 

signal in a circular pattern around the antenna. 

The zBoost TRIO Xtreme requires at least 15 feet of vertical separation between the 

Base Unit and the External Antenna. Generally, increasing this distance (up to 40 feet) 

will increase the performance and decreasing the distance will limit the performance. 

Keep the Base Unit off the floor and at least 2 feet away from other cords, metal objects 

or other wireless devices such as wireless routers or wireless access points. The zBoost 

TRIO  Xtreme performs best when there are no obstructions between the zBoost Base 

Unit and your mobile device.

STEP 3: Run the provided coaxial cable between the Base Unit and External 

Antenna.

Connect the two provided RG-6 coax cables (35 ft. & 15 ft.) using the 

provided window-entry cable. Use the attached cables to connect the Base Unit and 

External Antenna  through a window, positioning the window-entry cable at the window 

closing. See other cable setup options in the User Manual at www.zBoost.com.

Should 

additional cable length be needed, 15 ft. extensions (Part YX030-15w) are available at 

www.zBoost.com. Note: Cable runs longer than 75 ft. are not recommended, unless 

upgraded to RG-11. RG-11 can be run up to 120 ft.

STEP 4: Connect the zBoost Base Unit to the provided power supply and plug into 

a power outlet. 

When your zBoost system is in place and fully connected, walk 

throughout your building and verify that you are able to reliably place calls. If the signal 

strength has improved, your zBoost is working. Remember, coverage varies based on 

outdoor signal level, building construction, and antenna placement. Coverage in 

adjoining rooms will be reduced by walls and ceiling/floors. 

Download the User Manual at www.zBoost.com/support

Package Contents

Power Supply

Upon initial power up, the LED will cycle RED, GREEN and ORANGE for 30 seconds.  

After, a series of GREEN flashes will indicate the quality of your setup. Following this, a 

solid GREEN light indicates normal conditions. If it is not solid GREEN, follow the 

instructions in the Base Unit LED Indicators section.

Adjustments may be needed to 

optimize performance. If you find the increased signal coverage is acceptable, however, 

no additional adjustments are needed. See the LED chart for more information.

Should you desire to improve coverage:

•  Relocate the External Antenna to capture a better signal – higher is better.

•  Increase the distance between the Indoor Antenna and the External Antenna. 

•  Purchase YX027 upgrade Indoor Antenna at www.zBoost.com.

zBoost Base Unit

Indoor Antenna

Coax Cable

RG-6, 35 ft.

SETUP OVERVIEW

Setup Overview

External Antenna

External Antenna

Mounting Hardware

Coax Cable

RG-6, 15 ft.

Window Entry

Cable

Antenna at

highest elevation

(15 feet above 

Base Unit)

Maximum Performance

Minimum Performance

External Antenna

Coax Cable

Window 

Entry Cable

Indoor Antenna

Power Supply

vertical

separation

Base Unit

Coax Cable

vve

ver

sseep

sep

Antenna Bracket