Pro 4 band mobile signal amplifier to improve calls and 3G 4G data services

Name: Pro 4 band mobile signal amplifier to improve calls and 3G 4G data services
SKU: SR-QBG70/22-K QC15
Rating: 4.85 (20 reviews)

Rated 4.85 out of 5 based on 20 customer ratings

(20 customer reviews)

£449.00


Key Features Application Network Services Frequency Bands 800 / 900 / 1800 / 2100 MHz (Band 20 \| 8 \| 3 \| 1 ) Coverage up to 150m² Ideal for ⋅ ⋅ Providers Supported A Standard Kit includes 1x Booster + Power Adapter 1x Indoor Ceiling Antenna 1x Outdoor General LPDA Antenna 1x 15-meter Low Loss Cable 1x 5-meter Low Loss Cable 2-Year Warranty 30-Day Money Back

Need Extra internal antenna(s) ?

1x ceiling antenna (omni-directional) +£25.00

2x ceiling antennas (omni-directional) +£45.00

1x ceiling antenna + 1x panel antenna +£55.00

Need extra cable(s) ?

Description
Reviews (20)

Description

This 4-Band booster covers all providers all over the country, a 4-Band solution to improve calls and internet! The sleek design is optimal for better output and promises “5-bar constant signal” availability within its coverage range. You can use our booster with 100% efficiency in entire country and install it anywhere you wish within a very short time. Get instant coverage with our Pro 4-Band Mobile Phone Signal Booster for All Popular Frequencies, All Providers Calls and 3G 4G Internet Data, Boosting broadcast signals in the 800/900/1800/2100MHz (Band 20|8|3|1) frequency range for all popular networks. This signal booster will keep your signal running clear and quick for users. With it’s wide coverage range this mobile booster works for your flat, office, bar, mini-cafe or other areas,making it perfect whether you’re running a small business or just want a greater range of coverage in your own home.

This booster works with:

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What makes our boosters different?

1. Equipped with an advanced DSP for high-efficiency signal processing.2. Delivers radio spectrum performance that surpasses industry standards.3. Features a unique intelligent decision-making system that adapts in real time to on-site signal strength, creating professional-grade signal boosters with exceptional reliability.

5-level signal filtering effectively eliminates noise and out-of-band emissions, preventing interference to cellular base stations.

1. RADIO EMC EMF SAFETY tests verify no harm to human health and no interference to cell stations.2. Radio Equipment Directiive CE certified. Ofcom Exemption.

Automatic standby mode when idle, energy-efficient and long-lasting performance.

How to install the booster kit?

1. Find a strong outdoor signal sourceChoose an open area outside your property, preferably at a higher elevation (e.g., rooftop). Place the outdoor antenna by type:A - Directional antennas (LPDA, Yagi, Panel): Point directly toward the cell tower, with no obstacles nearby.B - Omni-directional antenna (Pipe antenna): Point vertically toward the sky, with no obstacles nearby (cell tower direction is irrelevant).2. Connect the outdoor antennaUse the 15-meter cable (or sufficient length) to connect the outdoor antenna to the “Outdoor ANT” port on the booster.3. Place and connect the indoor antennaPosition the indoor antenna in the central area of the target coverage zone, keeping it clear of obstacles. Use the 5-meter cable (or sufficient length) to connect it to the “Indoor ANT” port on the booster.4. Power on the booster. Check the LED indicators on the booster to confirm normal operation (refer to LED State Explanation below).

Easy to understand booster working status

Power LED

Green – Power ON (normal)

Dark - No power supply

Down Link LED (DL/P) - Signal Amplification Status

Dark - No signal received

Blue - Weak signal received, working.

Green - Good working state

Bright Red - Optimal working state.

Up Link LED (UL/P) - Calling & Alarm Status

Dark - No calls, standby state

Flicker - Calls/internet active, working state

Solid Red - Alarm, check installation.

What to do in ALARM state - Turn off the booster, check installation per the troubleshooting section in the full user manual. The booster will resume normal operation automatically after the issue is resolved.

Technical Specifications

Frequency Bands

Band

Linear Gain (UL/DL)

Upon outside signal conditions

Output Signal Power

Upon coverage

ALC/AGC Range

≥ 20dB

MGC Adjustment Range (optional)

Max 31dB in step of 1dB

Noise Figure @ Full Gain

≤ 6dB

In Band Ripple

≤ 5dB

Group Delay

≤ 5μs

VSWR

≤ 1.8dB

Spurious Emission

9KHz ~1GHz ≤ -36dBm/100KHz1GHz ~12.5GHz ≤ -30dBm/1MHz

Inter-modulation

≤ -40dBc

Return loss

≤- 8 dB

Max. Input Power Without Damage

0 dBm

Frequency Stability

≤0.01ppm

MTBF

>50000 hours

System Impedance

50Ω

AC Power Requirements

100 ~ 240VAC / 45 ~ 65Hz

CE certification

RED CE

20 reviews for Pro 4 band mobile signal amplifier to improve calls and 3G 4G data services

4.9

Based on 20 reviews

5 star	85	85%
4 star	15	15%
3 star		0%
2 star		0%
1 star		0%

1-5 of 20 reviews

Klaus Schulte
Reviewer

December 17, 2025

Thank you:) The booster works well. And thank you for providing very detailed information about their functioning and peculiarities on the website.
Darío
Reviewer

October 4, 2025

I like our new booster! Earlier we tried to install another device from another firm but we had to return it to the seller as it didn’t work. However, it is a very different story:)
Robert P.
Reviewer

July 11, 2025

Thank you for a high-quality device that demonstrates the highest level of reliability and stability in its work.
Vanessa L.
Reviewer

June 20, 2025

Good and reliable booster.
Mustafa
Reviewer

January 19, 2025

The device is cool. I do not like that only one color is available. I think it could be sensible to offer more color options for this model.