User Manual

NOTICE: The RF220 modules have been certified for remote and base radio applications. If the module will be used
for portable applications as defined by the FCC, the device must undergo SAR testing.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
FCC Approved Antennas
The RF220SU modules are FCC-approved for fixed base station and mobile applications.
Notice: To reduce potential radio interference to other users, the antenna type and its gain should be chosen so that
the equivalent isotropically radiated power (EIRP) is not more than that permitted for successful communication. This
module has been designed to operate with the antennas listed in RF220SU Approved FCC Antennas on page 11. .
The required antenna impedance is 50 ohms.
Part Number Type Gain Impedance Application
Min.
Separation
Pulse W1027
Dipole (quarter-
wave RPSMA)
3.2
dBi
50Ω Fixed/Mobile 20 cm.
HyperLink
HG2405RD-RSP
Dipole (quarter-
wave RPSMA)
5.5
dBi
50Ω Fixed/Mobile 20 cm.
Table 5: RF220SU Approved FCC Antennas
For more information on approved antennas, please consult the manufacturer’s website.