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Foreword
READ ALL INSTRUCTIONS carefully and completely before using the transceiver.
SAVE THIS INSTRUCTION MANUAL-This instruction manual contains important operating
instructions for the JHS-431 UHF TRANSCEIVER.
Explicit Definition
Word Definition
WARNING:Personal injury, fire hazard or electric shock may occur.
CAUTION:Equipment damage may occur.
NOTE:If disregarded, inconvenience only. No risk of personal injury, fire or electric shock.
Operating Notes
z When transmitting with a portable radio, hold the radio in a vertical position with its
microphone 5 to 10 centimeters (2 to 4 inches) away from your mouth. Keep the antenna at
least 2.5 centimeters (1 inch) from your head and body.
z If you wear a portable two-way radio on your body, ensure that the antenna is at least 2.5
centimeters (1 inch) from your body when transmitting.
Precaution
WARNING! NEVER hold the transceiver so that the antenna is very close to, or touching exposed
parts of the body, especially the face or eyes, while transmitting. The transceiver will perform best if
the microphone is 5 to 10 cm (2 to 4 inches) away from the lips and the transceiver is vertical.
WARNING! NEVER operate the transceiver with audio accessories at high volume levels.
CAUTION! NEVER short the terminals of the battery pack.
NEVER connect the transceiver to a power source other than the BP-227AXD. Such a connection will
ruin the transceiver.
DO NOT push the PTT when not actually desiring to transmit.
AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below -20°C (-
4°F) or above +60°C (+140°F).
DO NOT modify the transceiver for any reason.
MAKE SURE the flexible antenna and battery pack are securely attached to the transceiver, and that
the antenna and battery pack are dry before attachment. Exposing the inside of the transceiver to
water will result in serious damage to the transceiver. The use of non-BP-227AXD battery
packs/chargers may impair transceiver performance and invalidate the warranty.
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