![background image](http://html2.mh-extra.com/html/icom/ic-410pro/ic-410pro_basic-manual_4016691015.webp)
PROBLEM
POSSIBLE CAUSE
SOLUTION
Cannot receive, but others can hear
my transmissions.
Squelch is set too high.
Reduce the squelch level
in the Set mode. (p. 5)
Tone squelch (quiet reception
mode) is ON. (“TSQL” is displayed)
Hold down [MONI] for 2 seconds several times until “TSQL”
disappears. (p. 2)
Selcall Quiet Mode is ON.
(“Q” is displayed)
Turn OFF the Quiet mode in the Set mode. (p. 5)
Can receive, but others cannot hear
my transmissions.
Output power level is set to “Lo.”
(“L” is displayed)
Change the output power level to “HI” in the Set mode. (p. 5)
Other stations are operating in the
Tone squelch or Selcall modes.
Set the correct Tone squelch setting for the user group.
The transceiver transmits regularly,
the signal strength indicator blinks,
and beeps.
The ATS (Automatic Transponder
System) function is ON.
Push [MONI] to turn the ATS function OFF. (p. 2)
Continuous noise is heard from the
speaker.
The Monitor (Open squelch)
function is ON.
Push [MONI] to turn the Monitor function OFF. (p. 2)
Squelch level set too low.
Increase the squelch level
in the Set mode. (p. 5)
Activity on the channel
Check if the noise is also heard on other channels. If not,
another station may be transmitting on that channel, or you may
be receiving interference from other devices.
Buttons have no effect or do not work
as expected
The Keylock function is ON.
Hold down [DUP] for 2 seconds to unlock the keys. (p. 2)
The keys may have been
reassigned.
Contact your authorized Icom dealer or transceiver administrator
for details.
10
6
TROUBLESHOOTING
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
: Stands for Normal mode.
: Stands for Function mode.