Icom IC-725 Instruction Manual page 5

CONTROL
FUNCTIONS
-|
See Section
1
-
4
FUNCTION
DISPLAY
inn
m
MEMO
r/c
IUU.UU
split
L
U
HF TRANSCEIVER
10725
VFO
SPLIT
UP
fp
TsCA N
| |
A =
B
|
M.
SCAN]
[
M-VFO~
]
M-CH
MEMO
MW
DOWN
VFO
SPLIT
|
P.
SCAN
| I
A = B
|
|m.scan|
MEMO
MW
(!)
UP
M-CH
DOWN*
(M)
DIAL
LOCK SWITCH
[LOCK]
Deactivates the
MAIN DIAL
and
transmits
a
subaudible
tone
signal
in
FM
mode.
(I5)
MHz TUNING RATE
SWITCH
[MHz]
(p.
14)
Sets the tuning steps
at
1
MHz.
(0)
kHz
TUNING RATE SWITCH
[kHz]
(p.
14)
Sets the tuning
rate for
1
kHz
steps.
©
MAIN
DIAL
Changes the displayed frequency.
(f|)
BRAKE ADJUSTMENT SCREW
(p.
27)
Adjusts
MAIN
DIAL
tension.
C\J>
MODE
SWITCHES
(pgs.
17-20)
Selects
the desired operating
mode.
@
AGC
SWITCH
[AGC]
(p.
15)
Changes the time constant of the
AGC
circuit.
(2j)
PREAMP
SWITCH
[PRE]
(p.
15)
Activates the
built-in
10
dB
gain
RF
preamplifier.
(22)
ATTENUATOR
SWITCH
[ATT]
(p.
15)
Activates the
20
dB
attenuator to prevent front end
overload.
(23)
NOISE
BLANKER
SWITCH
[NB]
(p.
15)
Activates the noise blanker
circuit.
(24)
MIC
CONNECTOR
[MIC]
(p.
10)
Accepts Icom hand
or
desk microphones. Refer to
Section 13
OPTIONS.
(25)
RF
POWER CONTROL
[RF
PWR]
(p.
16)
Adjusts
RF
output power.
(26)
MIC GAIN
CONTROL
[MIC]
(p.
16)
Adjusts
microphone
input
gain.
@
SQUELCH CONTROL
[SQL]
(p.
15)
Adjusts the squelch threshold
level.
(28)
AF GAIN
CONTROL
[AF]
(p.
15)
Adjusts audio output
level.
(29)
HEADPHONES
JACK [PHONE]
Accepts
a
standard 1/4 inch plug
from 4
~
16
£1
mono
or stereo
headphones.
(30)
TRANSMIT/RECEIVE SWITCH [TRANSMIT]
Selects
transmit
or receive.
(31)
POWER
SWITCH [POWER]
Turns the
power
ON
and
OFF.