Yaesu FT-4VR Operating Manual page 6

Function Key (
Pressing the Function key activates the "Secondary" key function.
⑥
Press and hold the Function key enters the Set mode.
In the Set mode, pressing the Function key defines and saves the set-
ting.
⑦
Battery pack(
PWR/VOL Knob
• Turn this control clockwise to turn the transceiver ON and to increase
⑧
the volume.
• Counter-clockwise rotation into the click-stop will turn the transceiver
OFF.
⑨
Emergency Key
Press and hold it for three seconds to enable the Emergency Alarm
beep functions and display the Home channel VHF frequency.
⑩
TX/BUSY Indicator Lamp
This indicator glows green when the squelch opens, and it glows red
during transmit.
⑪
Speaker
⑫
LCD (Liquid Crystal Display)
The display shows frequecny and current operating condition.
⑬
Keypad
The functions of the keypad are described in detail on page 7.
⑭
SP jack
SP jack provides connection for an earphone.
⑮
MIC jack
MIC jack provides connection for a microphone or clone cable.
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26)
12)