Federal Communications Commission Regulations:
The FCC rules require manufacturers to comply with the FCC RF energy exposure limits for
mobile 2-way radios before they can be marketed in the U.S. When 2-way radios are used as a
consequence of employment, the FCC requires users to be fully aware of and able to control their
exposure to meet occupational requirements. Exposure awareness can be facilitated by the use
of a label directing users to specific user awareness information.
The DTX 2-way radio has an RF exposure product label. Also, this DTX manual includes
information and operating instructions required to control your RF exposure and to satisfy
compliance requirements.
Compliance with RF Exposure Standards:
The DTX two-way radio is designed and tested to comply with a number of national and
international standards and guidelines (listed below) regarding human exposure to radio
frequency electromagnetic energy. This radio complies with the IEEE and ICNIRP exposure limits
for general population/uncontrolled RF exposure environment at duty factors of up to 50% talk
and 50% listen and is authorized by the FCC for occupational use. In terms of measuring RF
energy for compliance with the FCC exposure guidelines, your radio antenna radiates
measurable RF energy only while it is transmitting (during talking), not when it is receiving
(listening) or in standby mode. The DTX two-way radio complies with the following RF energy
exposure standards and guidelines:
• United States Federal Communications Commission, Code of Federal Regulations; 47 CFR §§
2 sub-part J.
• American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers
(IEEE) C95. 1-1992.
• Institute of Electrical and Electronic Engineers (IEEE) C95.1-1999 Edition.
Copyright Telecommunications Industry Association
To control exposure to yourself and others and ensure compliance with the
occupational/controlled environment exposure limits always adhere to the following procedures:
Guidelines:
• User awareness instructions should accompany device when transferred to other users.
• Do not use this device if the operational requirements described herein are not met.
Instructions:
• Transmit no more than the rated duty factor of 50% of the time. To transmit (talk or send data),
assert the PTT input pin. To receive calls, un-assert the PTT input. Transmitting 50% of the time,
or less, is important because this radio generates measurable RF energy exposure only when
transmitting (in terms of
measuring for standards compliance).
• Transmit only when people are at least the recommended minimum lateral distance away, as
shown in Table 1, from a properly installed according to installation instructions, externally-
mounted antenna.
