Yaesu FT-1900E Operating Manual page 3

FT-1900E Q
VOL K
Adjusts the audio
volume level.
P S
Press and hold for
one second.
T
Speak into the microphone
in a normal voice level
while pressing this switch.
UICK
A d j u s t t o t h e p o i n t w h e r e t h e
background noise is muted.
Press and hold for one second to lock all
key functions except the VOL, SQL knobs
and PTT switch.
S
R
EFERENCE
SQL K
F
Selects the operating Frequency.
LOCK S
DTMF MICROPHONE
MH-48
G
UIDE
DIAL K
M