Technical Guide

6
CHANGES OR MODIFICATIONS NOT EXPRESSLY
APPROVED BY SURECALL COULD VOID THE
USER’S AUTHORITY TO OPERATE THE
EQUIPMENT.
1.6 How it Works
The GuardianA amplifies signals that reach a building from the nearest radio tower, and from radios inside the building going back to the
tower. This compensates for weak reception caused by distance, topography, building structure, etc. The BDA receives the signal from an
outside antenna, amplifies that signal, and then rebroadcasts it via antenna(s) inside the building, where it can then be picked up by radios
inside. In the reverse direction, interior antennas also pick up signals coming from radios, where they are amplified by the BDA, and then
passed to the exterior antenna for rebroadcast back to the tower.
1.7 A Word About Safety
Follow all safety precautions in this manual. This information is designed to prevent personal injury, equipment malfunction, and/or
radio interference. You are responsible for ensuring a safe installation.
Your installation may require working in high locations such as roofs and/or ladders. Follow applicable safety regulations and best
practices to avoid falling. Take care not to drop objects from any high area. Cordon off ground areas directly below the section of roof
you are working on, or below your ladder whenever possible.
In addition, as a qualified installer, you are responsible for knowing and following all applicable codes and regulations and for obtaining
all required permits and inspections.
Always use appropriate personal protective equipment such as goggles, gloves, hard hat, etc. as needed, and as required. Failure to
exercise caution when working in high areas could cause a fall and personal injury.
.
RF SAFETY WARNING: ANY ANTENNA USED WITH THIS
DEVICE MUST BE LOCATED AT LEAST 8 INCHES FROM
ALL PERSONS.