User Manual

HX400Page 16
5. CONTROLS AND INDICATORS
5.1 CONTROLS AND SWITCHES
NOTE
This section defines each control of the transceiver. For detailed operating
instructions, refer to section “6. BASIC OPERATION”. Refer to illustra-
tions for the location of the following controls, switches, and connections.
ANT Jack
(
Top Panel
)
The supplied CAT460 flexible an-
tenna is attached here.
MIC/SP Jack
(
Top Panel
)
The jack accepts the optional MH-
73A4B Speaker/Microphone, MH-
57A4B Mini Speaker/Microphone,
VC-24 VOX Headset, or VC-27
Earpiece/Microphone. When this
jack is used, the internal speaker
and microphone are disabled.
POWER Switch / VOLUME Con-
trol
(
VOL
)
Turns the transceiver on and off
as well as adjusts the audio vol-
ume level.
Turn this knob clockwise to turn
the radio on and increase the
speakers audio volume.
Turn fully counter-clockwise to
turn the radio off.
Noise Canceling Microphone
The noise canceling microphone is located here.
Note: To cancel background noise when transmitting, care should be taken
not to cover this mic hole with your hand.
PTT
(
PUSH-TO-TALK
)
Switch
When pushed activates the transmitter.
LCD Display
This display shows current operating conditions. Refer to page 19 for details.