SureCall | 48346 Milmont Drive, Fremont CA 94538 | 1-888-365-6283 | support@surecall.com
SureCall | 48346 Milmont Drive, Fremont CA 94538 | 1-888-365-6283 | support@surecall.com
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Introduction & Overview
CHAPTER 1: INTRODUCTION & OVERVIEW
1.1 Product Overview
SureCall’s Guardian2 QR is a bi-directional communications amplifier for police headquarters, fire stations, hospitals,
and other first-responder facilities. The BDA services the full public safety 700MHz and 800MHz bands.
The Guardian2 QR significantly improves the quality of crucial first-responder communications in buildings with weak
signal strength. For optimal coverage, the BDA uses built-in safeguards to eliminate interference to public-safety
networks. It meets NEMA 4 type requirements, and is upgradable in the field. Plus, the Guardian2 QR offers the
industry’s best three-year warranty available.
The Guardian2 QR is enclosed in a NEMA-4 compatible housing, and enhances the coverage area of first responder
radio communications for in-building applications. It is equipped with bi-directional paths (down-link & up-link) for
transmit and receive frequencies, and advanced filtering technology for low-noise amplification of signals.
1.2 Package Contents
Your BDA box contains the following items:
• Guardian2 bi-directional amplifier
• NEMA-4 rated housing
• AC power cable
• DC power cable and connector
• Alarm cable and connector
• Ethernet connector
• Mounting kit
1.3 Additional Items Needed
The Guardian2 QR needs the following additional components for a complete install:
• External antenna
• Lightning protector
• Cable splitter if installing multiple antennas
• Sufficient SC-400 ultra-low loss interior/exterior cable, 50 ohm
• Multiple antennas (omnidirectional domes and/or panels by SureCall)
• Grounded surge suppressor for DC power supply
1.4 Key Features & Benefits
• Suitable for large coverage areas.
• Extends signals in areas with poor coverage due to geographical location and/or building design.
• Powerful in-building BDA with 31dB of adjustable gain level.
• NEMA-4 rated amplifier housing. No additional NEMA enclosure required.
• Integrated 7-pin alarm and UPS port for external battery backup.
• Power control maintains maximum output power at 26 dBM.
• Automatic oscillation detection and protection system powers down the BDA to prevent harmful radio
interference.
• Automatic gain control (AGC).
• Features built-in SureCall Sentry remote-monitoring system with Ethernet port.
1.5 Optional Accessories
SureCall provides many optional features and accessories for the Guardian2 QR Amplifier. See table below:
Splitters and Couplers
SC-WS-2
Wide Band 2 Way Splitter
SC-WS-3
Wide Band 3 Way Splitter
SC-WS-4
Wide Band 4 Way Splitter
SC-C-6
-6dB Coupler
SC-C-10
-10dB Coupler
Outdoor Antenna Options
SC-288W
Wide Band Omni-directional 50 ohm Fiberglass Antenna 3 to 4dBi (includes mounting kit, 698-2700 MHz)
SC-230W
Wide Band Yagi Directional 50 ohm Antenna 10 to 11dBi gain (includes mounting kit, 698-960 & 1710-2700 MHz)
Inside Antenna Options
SC-222W
Wide Band Dome 50 ohm Antenna - 3 to 4dBi (includes mounting kit, 698 -2700 MHz)
SC-248W
Wide Band Panel 50 ohm Antenna - 7 to 10dBi (includes mounting kit, 698-2700 MHz)
Plenum Cable
SC-PL-30FT
30' SC400 Ultra Low Loss Coax Plenum Fire Rated Cable with N-Male connectors - Orange
SC-PL-75FT
75' SC400 Ultra Low Loss Coax Plenum Fire Rated Cable with N-Male connectors - Orange
SC-PL-1000FT
1000' SC400 Ultra Low Loss Coax Plenum Fire Rated Cable - Orange
Ultra Low Loss Cable
SC-006-1000
1,000' SC600 Ultra Low Loss Coax Cable. Connectors not included - Black
Accessories & Connectors
SC-LP
Lightning Protector
SC-ATNR-5
5 dB RF Attenuator
SC-ATNR-10
10 dB RF Attenuator
SC-ATNR-20
20 dB RF Attenuator
SC-CN-09
N Male Crimp Connector, 400 and Plenum Cable
SC-CN-12
N Male to N Male Connector
SC-CN-16
N Male Connector, 600 Cable
SC-Mount-Pole
L Bracket mount with U bolt hardware for donor antenna mount to J-bar
SC-Mount-JBar
Steel 1 inch J-Bar mount for donor antenna. Antenna mount not included
Introduction & Overview
