Operation Manual
VX-450 SerieS Operating Manual
5
WarnIng! fcc rf exposure requIrements
When transmitting, hold the radio in a vertical position with its microphone 2 inches (5 cm) away from
your mouth and keep the antenna at least 2 inches (5 cm) away from your head and body.
The radio must be used with a maximum operating duty cycle not exceeding 50%, in typical Push-to-
Talk congurations.
DO NOT transmit for more than 50% of total radio use time (50% duty cycle). Transmitting more than
50% of the time can cause FCC RF exposure compliance requirements to be exceeded.
The radio is transmitting when the red LED on the top of the radio is illuminated. You can cause the ra-
dio to transmit by pressing the P-T-T button.
SAR compliance for body-worn use was only demonstrated for the specic belt-clip (CLIP-20). Other
body-worn accessories or congurations may NOT comply with the FCC RF exposure requirements and
should be avoided.
DO NOT transmit when the radio is used in Body Worn conguration with the following accessory: belt-
clip (CLIP-20).
It must be used ONLY for (1) there is 4 cm distance from the body during transmitting, (2) monitoring
purposes, using the speaker only and (3) for carrying purposes.
Always use Vertex Standard authorized accessories.
The information listed above provides the user with the information needed to make him or her aware of
RF exposure, and what to do to assure that this radio operates with the FCC RF exposure limits of this
radio.
Electromagnetic Interference/Compatibility
During transmissions, this radio generates RF energy that can possibly cause interference with other de-
vices or systems. To avoid such interference, turn off the radio in areas where signs are posted to do so.
Do not operate the transmitter in areas that are sensitive to electromagnetic radiation such as hospitals,
health care facilities, aircraft, and blasting sites.