Guardian3™ Signal Amplifier for Public Safety Bands


In large structures like hospitals, fire stations, and police stations, radio interference is a common problem–which can cause communication difficulties. For first responders, this can have serious consequences as seconds and minutes can sometimes mean the difference between life and death. To help combat this and improve in-building radio communications in police headquarters, fire departments, and other buildings where public safety radios are used, SureCall has developed the Guardian3™–a bi-directional amplifier that strengthens signal on the public safety bands.

About the Guardian3™ System

SureCall’s latest innovation, the Guardian3™, is a Tri-Band Bi-Directional Amplifier that services the full Public Safety 700MHz and 800MHz bands as well as the 900MHz SMR (Specialized Mobile Radio Service). This booster significantly improves the quality of crucial First Responder communications in buildings with weak signal strength

The Guardian3™ PSB is an extremely affordable solution for multi-story buildings with weak signals due to building materials and topography.

Recognizing the need for better in-building radio communications in police headquarters, fire departments, and all buildings where two-way public safety radios are used, SureCall has introduced the Guardian3™, bidirectional amplifier (BDA) that strengthens signal strength across the public safety and SMR (specialized mobile radio service) frequency bands used by first responders.

The Guardian3™, with an expected MSRP of $3,980, is available now. “Two way radio communications inside buildings are subject to many obstructions and the signal strength can be weakened by building material and topography, similar to cellular signals,” said Hongtao Zhan, CEO, Chief Engineer and Inventor at SureCall. “The Guardian3™ helps deliver a reliable and robust signal quality for the public safety officials relying on two-way communications.”

The Guardian3™ serves radios operating on both the 700 MHz and 800 MHz frequency bands, as well as the 900 MHz SMR band. It delivers up to 80 dB of signal gain, enough power to give up to 80,000 sq. ft. of improved coverage. Multiple boosters can be used to cover larger areas. The unit’s compartmentalized design increases clarity and reduces noise.

The Guardian3™ also features an embedded CPU for each band for smarter technology and auto gain control (AGC). The unit operates with the lowest out-of-band emissions available, and its software is upgradable in the field to make updating convenient. The Guardian3™ also Incorporates energy-saving technology that allows the booster’s uplink circuitry to go dormant when not in use.

Guardian3™ Benefits

The Guardian3™ has built-in safeguards to eliminate interference on public safety networks, allowing for clear and consistent communication where it is needed most. The Guardian3™ is independently configurable for each public safety band, allowing you to custom tailor your amplification needs. The Guardian3™ provides up to 80dB of signal gains and can cover up to 80,000 square feet.

Guardian3™ System Specifications

The Guardian3™, is a tri-band, bi-directional amplifier (BDA) that services the 700 MHz and 800 MHz Public Safety bands as well as the 900 MHz SMR (Specialized Mobile Radio Service).

Uplink: 788-805 / 806-824 / 896-901 Mhz; Downlink : 758-775 / 851-869 / 935-940 Mhz

Gain: 80 dB

Output Power: 26 dBm

Noise Figure: ?8

VSWR: ?2.0

Power Requirement: 90W

Gain Adjustment: 31 dB

Dimensions: 14″ X 11″ X 3.5″

Weight: 8.05 lbs.

About SureCall

SureCall® specializes in the design and manufacture of cell phone signal boosters, antennas and accessories. Their industry-leading signal boosters significantly improve celluar reception for homes, businesses, vehicles, and even watercraft. Their products are FCC-approved and can enhance the range and reception for all North American carriers.

Since 2001, SureCall’s has lead the industry in first-to-market cellular boosting technology and continues to innovate, developing boosters that address the changing needs of cellular users. With U.S.-based experienced support technicians, you can count on high-quality support and troubleshooting should the need arise. With a 3 year industry-leading warranty, SureCall products can be bought with confidence that you are buying the best equipment available on the market today.

Signal Amplifcation Systems from ATG

At Atlantic Technology Group, we have a variety of ways that we can meet your needs. Whether you simply need to purchase equipment like the Guardian3™, or you need full system installation and integration, we can help. Our team of professionals has years of experience assessing the technological needs of companies, organizations, and government agencies, helping them improve communication and company efficiency.

Our expansive product offering and experienced professionals can find a solution for virtually any problem.

ATG is a certified installer for the following manufacturers:

  • Cellular Specialties
  • Wilson Electronics
  • Mobile Access
  • Spotwave
  • Cellphone-Mate (including Sure Call)
  • Wi-Ex (including zBoost)
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