User's Manual

Connecting an Optional External Antenna
The BNC antenna connector on the EZ Scan-SD makes it easy
to use the scanner with a variety of antennas, such as an
external mobile antenna or outdoor base station antenna.
Always use 50-ohm coaxial cable, such as RG-58 or RG-8 low-
loss dielectric coaxial cable. If your antennaʼs cable does not
have a BNC connector, you will also need a BNC adapter. Follow
the installation instructions supplied with the antenna, route the
antenna cable to the scanner, then connect it to the antenna
jack.
WARNING:! Use extreme caution when installing or removing an outdoor
! antenna. If the antenna starts to fall, let it go! It could contact
! overhead power lines. If the antenna touches a power line,
! touching the antenna, mast, cable, or guy wires can cause
! electrocution and death. Call the power company to remove the
! antenna. DO NOT attempt to do so yourself.
WARNING:! Outdoor antennas must be properly grounded to prevent
! static buildup and lightning damage. Article 810 of the National
! Electrical Code, ANSI/NFPA 70, provides information about
! proper grounding of the antenna mast, connection of coaxial
! cable to an lightning arrestor, size of grounding conductors,
! location of the lightning arrestor and connection of grounding
! conductors to grounding electrodes. Additionally, you may wish
! to disconnect your radio from the outdoor antenna during
! electrical storm activity to prevent damage. The diagram below
! provides an example of a proper antenna grounding system.
GENERAL RESEARCH OF ELECTRONICS, INC. PROPRIETARY AND CONFIDENTIAL INFORMATION
EZ Scan-SD Preliminary User Manual" Page 25