MM-010539-001, Rev. P6G
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1.3 RF ENERGY EXPOSURE INFORMATION FOR MOBILE OPERATION
The FCC requires licensees and manufacturers to meet radiofrequency radiation exposure compliance as
defined by FCC rule 47 CFR §2.1091 and as discussed in FCC document OET Bulletin 65: Evaluating
Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields.
Page 5 of OET Bulletin 65, Supplement C, subtitled: Mobile Devices states the following:
“The FCC rules for evaluating mobile devices for RF compliance are found in 47 CFR §2.1091.
For purposes of RF exposure evaluation, a mobile device is defined as a transmitting device
designed to be used in other than fixed locations and to be generally used in such a way that a
separation distance of at least 20 centimeters is normally maintained between the transmitter's
radiating structures and the body of the user or nearby persons.”
Page 7 of OET Bulletin 65, Section 2, subtitled: Guidelines for evaluating Mobile and Portable Devices
states the following:
“Mobile devices identified in 47 CFR §2.1091 that operate at 1.5 GHz or below with an effective
radiated power (ERP) of 1.5 watts or more, or those that operate at frequencies above 1.5 GHz
with an ERP of 3.0 watts or more are required to perform routine environmental evaluation for RF
exposure prior to equipment authorization or use; otherwise, they are categorically excluded.”
The M/A-COM 4.9 GHz Broadband Client radio with 0.5 Watt RF output , installed as a mobile device
using the 5.5 dBi mobile antenna and cable mounts referenced in Table 1-1, has a calculated worst case
ERP of 1.78 Watts relative to an isotropic radiator (EIRP). Therefore, it can be concluded that a M/A-
COM 4.9 GHz Client radio installed as a mobile device using the M/A-COM recommended mobile
antenna system is categorically excluded from any requirement to perform routine environmental
evaluation for RF exposure. This is true with other mobile antenna systems having gains up to 7.7 dBi.
CAUTION
Changes or modifications not expressly approved by M/A-COM, Inc. could void the
user's authority to operate the equipment and may require the user to perform
routine environmental evaluation of the mobile installation.
This two-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to provide
communications between two or more users over a distance. It uses RF energy or radio waves to send and
receive calls. RF energy is one form of electromagnetic energy. Other forms include, but are not limited
to, electric power, sunlight, and x-rays. RF energy, however, should not be confused with these other
forms of electromagnetic energy, which, when used improperly, can cause biological damage. Very high
levels of x-rays, for example, can damage tissues and genetic material.
Experts in science, engineering, medicine, health, and industry work with organizations to develop
standards for exposure to RF energy. These standards provide recommended levels of RF exposure for
both workers and the general public. These recommended RF exposure levels include substantial margins
of protection. All two-way radios marketed in North America are designed, manufactured, and tested to
ensure they meet government established RF exposure levels. In addition, manufacturers also recommend
specific operating instructions to users of two-way radios. These instructions are important because they
inform users about RF energy exposure and provide simple procedures on how to control it. Please refer
to the following websites for more information on what RF energy exposure is and how to control your
exposure to assure compliance with established RF exposure limits.
http://www.fcc.gov/oet/rfsafety/rf-faqs.html
http://www.osha.gov./SLTC/radiofrequencyradiation/index.html
