SureCall Guardian3 QR Tri-Band BDA w/ Enclosure + Sentry

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.

Unique Features

  • Features built-in SureCall Sentry remote monitoring system with ethernet port
  • NEMA 4 rated amplifier housing. No additional NEMA enclosure(s) needed
  • Latest network protection technology
  • Built-in safeguards eliminate interference to public safety network
  • Offers the industry’s best three-year warranty
  • Software up-gradable
  • Stealth technology incorporated – uplink becomes dormant when not in use, providing green, power saving operation
  • Independently, digitally adjustable uplink and downlink
  • Device self-diagnosis and self-protection
  • Lowest Out of Band Emissions (OOBE) to date

Additional information

Weight20 lbs
Dimensions15 × 15 × 5 in



  • Embedded CPU for each band for smarter technology Uplink/downlink oscillation detection
  • Auto Gain Control (AGC)
  • Automatic shut down
  • Quality metal construction, durable and resilient
  • Compartmentalized design increases clarity and reduces noise
  • Tri-Band


  • Frequency Range:
    Uplink: 788-805 / 806-824 / 896-901 (Including D Block)
    Downlink: 758-775 / 851-869 / 935-940 (Including D Block)
  • Gain: 80db
  • VSWR: 2.0
  • Supported Standards: Public Safety 700 and 800 and SMR 900
  • AC Input: 110 V, 60 Hz
  • Impedance: 50ohms
  • Maximum RF Output Power: 3 Watts EIRP
  • Noise Figure: ≤8dB
  • RF Connectors: N Female on both sides
  • Power Consumption: 90W
  • Operating Temperature: -4oF to +158oF
  • Dimensions: 15-1/2″ X 11 X 3-1/2″
  • Weight: 19.5 lb


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