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

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Looking for a great deal on SureCall Guardian3 QR Tri-Band BDA w/ Enclosure + Sentry? Explore a wide range of the best and affordable cell phone signal boosters on Excel Wireless to find one that suits your requirements! Besides good quality, you’ll also find a great deal. Shop now.

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

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


Explore more from Excel-Wireless to find the solution to your telecommunications needs. From a broad range of wireless antennas, to the cable jumpers necessary to make your antennas work right. We also offer cell-phone signal boosters for those who live in rural areas so you can finally catch up on all your favorite streaming shows.

A good rule to remember is that your antenna is only as good as the cable jumper it is attached to. Without a good cable even the best antennas are worthless. Contact our communications experts to find the proper fit for your needs.

Here at Excel-Wireless we pride ourselves on being solution providers, offering both great products and some of the best deals in the business.

If you need help installing your signal boosters, contact us directly and we can arrange for an installation professional to install it for you (limited to the greater Columbia area of South Carolina)

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

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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