![background image](http://html1.mh-extra.com/html/icom/ic-f410/ic-f410_service-manual_4268802017.webp)
5 - 6
5-4 BEEP ADJUSTMENT
BEEP AUDIO
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1 • Operating frequency: Any
• Connect an audio generator to
pin 25 (MAIN unit; J2) and set
as:
1 kHz / 550 mV
• Squelch
: OPEN
• Volume level : 1
• Receiving
Rear
panel
Connect an AC mil-
livoltmeter with 4
Ω
load to the [SP]
jack.
62.5 mV
FRONT
R60
DC power supply
13.2 (13.6) V / 15 A
AC
millivoltmeter
Speaker
4
Ω
SINAD
meter
Audio
generator
• MAIN unit
• FRONT unit
R60
Beep level
adjustment
J4, pin 25
Audio input point
1
15
16
30
25
J4
+
–