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Cell Phone Signal Boosters, Stop dropped calls and improve text reliability and 3G 4G LTE data speeds. Verizon, AT & T, T-Mobile, Sprint, US Cellular with the SureCall GuardianA

 Cellphone Signal Booster


Class A Public Safety BDA Signal Booster for First Responders

Industrial Use
Public Safety Band
Sentry Remote Monitor
Public Safety
 Cellphone Signal Booster
US Based Customer Support
Customer Support
Industry Leading 3 Year Warranty
3-Year Warranty
30 Day Money Back Guarantee
30-Day Money-
Back Guarantee
Boosts Cell Signal for All Carriers
Works with All Carriers
Long Term Reliability
Long-Term Reliability
FCC Approved
FCC Approved

GuardianA is a Class A, 2-Watt, bi-directional amplifier with a maximum gain of 90 dB supporting both the 700 and 800 MHz Public Safety frequency bands.

SureCall’s GuardianA Public Safety Band signal booster enhances inbuilding coverage for crucial communications, delivering consistent signal for First Responders and other public safety officials who rely on two-way radio communication inside large buildings.

In the majority of cases, newly constructed buildings with considerable size, or existing buildings that increase capacity by expanding the building footprint are required to have signal strength of -95 dBm or better in designated critical areas – elevators, stairwells, etc. – in order to receive a certificate of occupancy.

GuardianA meets the code for NFPA 72/1221 and IFC 510 and features a NEMA-4 rated amplifier housing. Additionally, the GuardianA comes equipped with dry contact 12-pin alarming compatibility, UPS port for battery backup and Ethernet port enabled remote monitoring. SureCall provides an industry leading 3-year warranty– extendable to 5 years.

  • Improves coverage for Public Safety Band Cellular Network Frequencies: (UL: 779-805, 806-816 & DL: 769-775, 851-861)
  • Class A, 32 channel independently controlled channels per band with Auto Gain Control (AGC) for each channel

  • 90 dB gain, 2-Watt system

  • Meets the code for NFPA 72/1221 and IFC 510

  • NEMA-4 rated amplifier housing
  • Ethernet port with built-in SureCall Sentry™ remote monitoring hardware
  • Integrated dry contact 12-pin alarming

  • UPS port for external battery backup

  • Automatic Gain Control (AGC) and Oscillation Detection

  • Energy-saving operation allows bands to remain dormant when not in use

  • A/C 110V or D/C 24-30V power option

  • Independently adjustable frequency attenuation for uplink and downlink
    (Reduce gain in -1 dBm increments)

  • Industry best 3-year warranty and lifetime US-based tech support

  • 5-year extended warranty available. Activate warranty at

Product Specifications
Uplink Frequency Range (MHz): 779-805 / 806-816
Downlink Frequency Range (MHz): 769-775 / 851-861
Channel Bandwidth: 700 MHz: 12.5 / 25 / 75
800 MHz: 12.5 / 25 / 75
Number of Channels: 32
Total Output Power: Uplink: 27 dBm
Downlink: 33 dBm
Maximum System Gain: 90 dB
Gain Adjustment Range (1 dB step): 0-50 dB
Pass Band Ripple, p-p: ≤ 5 dB
Uplink Noise Figure: ≤ 5 dB
System Group Delay: ≤35 usec
Intermodulation: ≤-13 dBm
Absolute Maximum RF Input Power: -10 dBm
Power Consumption: Single Band: 60 W
Dual Band: 80 W
Power Supply: AC: 100 – 240 / 50 – 60 Hz
DC: 24 – 30 V
Enclosure Cooling: Convection
Impedance: 50 Ohm
RF Connectors: N-Female (both ends)
Operating Humidity: 95%
Operating Temperature: -27ºF to +140ºF


Part Number:  SC-GuardianA
FCC Certification: FCC Part 90
UL Certification: UL 60905-1
Environmental Class: NEMA-4
UPC Number:  8 54328 00885 5
Dimensions: 21.2" x 17.2" x 8.0"
Weight (Booster Only): 45.9 lbs
Weight (Box As Shipped): 53 lbs
WARNING: California’s Proposition 65
WARNING: Cancer and Reproductive Harm -
Support Documents
This is NOT a CONSUMER device.
It is designated for installation by FCC LICENSEES and QUALIFIED INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC Licensee to operate this device. Unauthorized use may result in significant forfeiture penalties, including penalties in excess of $100,000 for each continuing violation.