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Cellphone Signal Booster 3G – 300 sqm (Power Line)


1 Band
Coverage: Up to 300 sqm
Ideal for:
Telkom Signal Boosters
850 MHz
Free Shipping In South Africa
Delivery time: 5-7 Business Days
Delivery time: 7-12 Business Days

Benefits and Features:

  • Instant Signal Boost of up to 5 bars
  • CE & RoHS ISO Certified Product
  • Easy Installation
  • Fast Data Download
  • 2 -Year Warranty

This  booster is an affordable option for improving cellular signal across greater areas with strongly weak signal. Covering up to 300 sq m, this model would suit large houses, offices, cafes, and restaurants, and medium-sized warehouses and marinas. This model amplifies your weak outside signal from the Telkom network at 850 MHz, and its energy-efficient as sends it into standby mode when not in use.

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Free Trackable Delivery In ZA
10 Years In The Mobile Boosters Industry
30-Day Money-Back Guarantee
24/7 Support
Over 8700 Satisfied Customers

R 5350

Units Sold: 152

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Kit includes:

  • 1x repeater
  • 1x outdoor Yagi antenna
  • 1x indoor antenna
  • 1x power adapter
  • 15 meters cable
  • 5 meters cable
Price Match Guarantee


If you are a Telkom user suffering from the poor signal, we have a range of boosters to get you up and running. This Power Line model an ideal solution in conditions of poor outside signal (1-2 bars). It repeats the 850 MHz signal band used by Telkom, giving you a solid 5-bar signal every time.

The Spark booster installation is a simple, 4-step procedure that takes as little as 15 minutes. The kit comes with everything you need to get connected and use of the booster will not negatively affect your health. Perfectly suited for use across South Africa. Our 24/7 support crew have you covered in the rare instance that you do experience an issue during or after setup.


Coverage (sq. m.) Place to use Operator Frequency


Up to 300 sq.m. Medium home

Medium office

Telkom (3G) 850 Repeater and all accessories


Down-link Voltage Size

Weight (booster unit only)

824~ 829MHz

864~ 894 MHz AC/220V±10% 45~55Hz 124*112*12.5 mm. 0.85 kg

Technical Specifications:

Frequency range uplink:824-829MHz Downlink: 869~894MHz Gain Up link: Gp≥51dB Downlink: Gp≥53dB
Output Up link :15dBm Downlink: 17dBm Function a) Power supply LED denote b) Export power LED denote
Port VSWR ≤1.8DB I/O impedance 50Ω/N connector  
Noise figure ≤6dB Transmission delay ≤0.5μs
Ambient temperature -15°C~55°C Power supply AC/220V±10% 45~55Hz
Size/weight 124*112*12.5MM/300g Coverage area Up to 300 sq. m
Led Signal Indication explanation:








DC power problem
  DL (Downlink)


No signal received Solution: Adjust the outdoor installation to get sound signal


Signal received ok but not perfect


Full signal received
  UP (Uplink)  


When there is a call it is normal


Always green means self-excited Solution: Turn off the booster, adjust the indoor and outdoor antenna again and try to expand the distance or create some barriers between them.
    ALA (Alarm system)  


The installation is not correct. For example, the outdoor antenna been stolen the cable is not connected properly There are strong input signals or severe self-oscillation, measures must be Take n(please note that our boosters have auto shut off function so the red color status can only maintain for 5 seconds).


Booster breaks down, or severe self-oscillation leads to auto mute Re-plug in and check if alarm LED turns Red.

Product FAQ:

How can I check if the booster will work for me?

Should I check the location of my network provider’s nearest tower?

How many users will one booster support?

How do I determine the best place to set up my booster?

How It Works:

4.67 out of 5 based on 25 customer ratings
25 customer reviews

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Reviews () Questions ()
  1. Verified Buyer

    5 out of 5

    Excellent customer service

    Fast delivery and great product. Would recomnend to others

    • Mobile Signal Boosters

      Dear Sophia,
      Thank you for taking the time to share your valuable review. We're so glad you are satisfied with our service.

  2. Verified Buyer

    5 out of 5

    Excellent communication

    Reps helped me decide what I needed and answered my questions and concerns. Highly satisfied with the service you provide

  3. Verified Buyer

    5 out of 5

    Like it

    Works great! Good purchase

  4. Verified Buyer

    5 out of 5

    Love love your company thanks for everything

    Accidentally ordered the wrong antennas called and explained why I had done. The lady that I talked with about returning and exchanging the antennas was great. I received the new antennas very prompt

    • Mobile Signal Boosters

      Dear Naomi,
      We're absolutely delighted to hear how happy you are and how much you enjoyed working with us.

  5. Verified Buyer

    4 out of 5

    Great experience

    Unbelievable how quickly my order was shipped! Great experience

  6. Verified Buyer

    5 out of 5

    Happy to have purchased it

    Installation and configuration were very simple. I've gone from 1 bar in the house to three bars. Happiness

  7. Verified Buyer

    4 out of 5

    Prompt service and fair price

    The item ordered was as advertised and delivered promptly.

  8. Verified Buyer

    5 out of 5


    This product is a good value for my money

  9. Verified Buyer

    4 out of 5


    Totally satisfied. Relatively easy to install

  10. Verified Buyer

    5 out of 5

    Nice booster

    The signal strength went up 3 bars!! Love it

  11. Verified Buyer

    5 out of 5

    Good Stuff

    Your products are always good quality. Thanks

  12. Verified Buyer

    4 out of 5

    Not bad

    Went from one bar to three. Installed myself.