Yaesu FT-51R Owner's Manual page 8

\ -
sets the threshold at which received signals
(or noise) open the squelch. It should nor-
mally be set just to the point where noise is
silenced or
( V H F U H F
.
channel is clear.
(7) Front Panel Keys
These keys generate DTMF tonegai-s during
transmission (except
and select operating features during recep-
tion. One or two beeps sound whenever a key
is pressed (unless the keypad beeper is dis-
-1 1
-1 2
lamp is off) when the
,
( CALL ), (BAND)
abled). The labels on the keyfaces indicate
their primary functions, while labels on the
panel indicate alternate functions, which are
activated by momentarily pressing
and then the desired key within five seconds.
There are also some "Setting Mode" func-
tions, for customizing less-commonly used
features. This mode is activated by pressing
and holding
and keys to select and change func-
tion settings. See pages 13, 14 and also the
key functions (these are described in detail
later).
Microphone
Speak across this opening in a normal tone of
voice while pressing the
(9)
V H F
These LED indicators glow red when trans-
mitting, and green when the noise squelch is
open (the channel busy) during reception.
(10) Loudspeaker
Use the buttons to adjust the speaker
audio level on an active station or on channel
noise (by first opening the squelch).
first,
then using the
DIAL
Sheet for a list of
Code
PTT.