1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Atcall Cell Phone Booster. This device is designed to enhance cellular signal strength within your home or office, supporting 5G, 4G, and LTE networks across all major Canadian carriers. It is ISED approved and operates on Bands 12, 17, 13, 5, 2, 25, 4, and 66.
For optimal performance, ensure you have at least one bar of reliable outdoor signal before installing the booster. Proper installation is crucial for effective signal amplification.
2. Package Contents
Verify that all items listed below are included in your package:
- 1 x Atcall Cell Phone Booster Unit
- 1 x Outdoor Log-Periodic Antenna
- 1 x Wall-Mounted Indoor Antenna
- 2 x 30 ft (9m) 3D-FB Coaxial Cables
- 1 x Power Supply
- 1 x Instruction Manual (this document)

Image 2.1: Contents of the Atcall Cell Phone Booster package, including the booster unit, outdoor antenna, indoor antenna, two coaxial cables, and power supply.
3. Installation Instructions
Careful installation is essential for the booster's performance. Follow these steps to set up your Atcall Cell Phone Booster system.
3.1. Pre-Installation Check: Identify Your Frequency Band
Before installation, determine the frequency band your carrier uses in your area to ensure the booster supports it. The Atcall booster works for bands 12, 17, 5, 4, 2, 25, and 13.

Image 3.1: Instructions for checking your phone's frequency band. For iPhone, dial *3001#12345#* and navigate to Serving Cell Info. For Android, use an app like 'Network Cell Info Lite' to check the band.
3.2. Outdoor Antenna Placement
The outdoor log-periodic antenna is designed to accurately receive weak signals from distant cell towers. Mount it in a location with the strongest possible outdoor signal, typically on a roof or pole, pointing towards the nearest cell tower. Ensure it is securely fastened and has a clear line of sight to the tower.

Image 3.2: The outdoor log-periodic antenna should be mounted externally, ideally on a roof, and directed towards the nearest cell tower for optimal signal reception. A minimum of one bar of outdoor signal is required for the booster to function.
3.3. Indoor Antenna Placement
The wall-mounted indoor antenna broadcasts the boosted signal inside your home. Place it in the area where you need improved signal coverage. Avoid placing it near metal objects or other electronic devices that might interfere with the signal.
3.4. Maintaining Separation Between Antennas
To prevent oscillation (feedback) and ensure effective signal boosting, maintain sufficient separation between the outdoor and indoor antennas. The recommended minimum distances are:
- Horizontal Distance: Greater than 30 ft (9m)
- Vertical Distance: Greater than 20 ft (6m)
- Straight Line Distance: Greater than 40 ft (12m)

Image 3.3: This diagram illustrates the critical separation distances required between the outdoor antenna (top left) and the indoor antenna (bottom right) to prevent signal interference and ensure proper booster operation.
3.5. Connecting the System
- Connect one 30 ft coaxial cable from the outdoor antenna to the 'OUTDOOR' port on the booster unit.
- Connect the second 30 ft coaxial cable from the indoor antenna to the 'INDOOR' port on the booster unit.
- Connect the power supply to the booster unit and then plug it into a power outlet.
- The booster will power on and begin its self-test sequence.
4. Operating Instructions: LED Band Indicator
The Atcall Cell Phone Booster features LED indicators that display the working status of each supported frequency band. Observe these indicators to monitor the booster's operation.

Image 4.1: The booster unit displaying its LED band indicators. Each light corresponds to a specific frequency band (e.g., Band 4, Band 2, Band 5, Band 12, Band 13).
LED Indicator Status:
- Green: Functional. The booster is operating correctly on this band.
- Orange: Self-Test and Signal Interference. The booster is either performing a self-test or detecting signal interference. Adjust antenna separation if this persists.
- Red: Abnormal. An issue is detected on this band. Refer to the troubleshooting section.
Note on Band Inclusion:
- Band 17 is included in Band 12.
- Band 25 is included in Band 2.
- Band 66 is included in Band 4.
5. Troubleshooting
If you experience issues with your Atcall Cell Phone Booster, consult the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| No signal improvement / Weak signal | Insufficient outdoor signal; Antennas too close; Incorrect antenna direction; Loose cable connections. | Ensure at least 1 bar of outdoor signal. Increase separation between indoor and outdoor antennas. Adjust outdoor antenna direction towards the cell tower. Check all cable connections for tightness. |
| Orange LED indicator persists | Signal interference (oscillation). | Increase the physical separation between the outdoor and indoor antennas. Ensure they are not facing each other directly. |
| Red LED indicator | System malfunction or severe interference. | Unplug the power supply, wait 30 seconds, then plug it back in. If the issue persists, contact customer support. |
| Booster randomly stops working | Intermittent power supply; Internal fault. | Check power outlet and connections. Try plugging into a different outlet. If the problem continues, contact customer support. |
| Limited coverage area | Indoor antenna placement; Building materials. | Relocate the indoor antenna to a more central location or closer to the desired coverage area. Consider if dense building materials are blocking the signal. |
6. Specifications
| Feature | Detail |
|---|---|
| Model | B0BJNZTG2D |
| Brand | Atcall |
| Supported Carriers | All Canadian Carriers |
| Supported Technologies | 5G, 4G LTE |
| Frequency Bands Supported | 700 MHz (Band 12/17/13), 850 MHz (Band 5), 1700/2100 MHz (Band 4/66), 1900 MHz (Band 2/25) |
| Coverage Area | Up to 5000 square feet |
| Approval | ISED Approved (IC: 28093-SFZN002, FCC ID: 2A34B-SFZN002) |
| Included Components | Booster unit, Outdoor Antenna, Indoor Antenna, 2x Coaxial Cables, Power Supply, Instruction Manual |
| Item Weight | 2.15 kg |
| UPC | 702909567751 |

Image 6.1: Rear view of the Atcall Cell Phone Booster showing ISED and FCC certification labels, confirming compliance with regulatory requirements.
7. Maintenance
The Atcall Cell Phone Booster requires minimal maintenance. Keep the unit and antennas clean and free from dust and debris. Ensure all cable connections remain secure. Avoid exposing the booster unit to extreme temperatures or moisture.
8. Warranty and Support
Your Atcall Cell Phone Booster comes with a 3-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For technical support, warranty claims, or any questions regarding your product, please contact Atcall customer service. Refer to the product packaging or the official Atcall website for contact information.
9. Safety Information
- Do not operate the booster near water or in excessively humid environments.
- Use only the provided power adapter. Using unauthorized adapters may damage the device and void the warranty.
- Do not attempt to open or repair the booster unit yourself. Refer all servicing to qualified personnel.
- Ensure proper grounding for outdoor antenna installations to protect against lightning.
- This device must be registered with your wireless provider and you must have your provider’s consent to operate this device.
- This device must be operated only in a fixed location for in-building use.
