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!1 KEYPAD
➥ Enters the selected channel number (or fre-
RX
quency*) for direct channel selection. (p. 7)
➥ Stores a receive frequency into a user chan-
nel or ITU simplex channel when:
• pushing [CE] ("s" appears)
• entering the desired frequency via the keypad
• pushing and holding [RX] (p. 12)
➥ Adjusts the RF gain after pushing [FUNC] to
reduce the receiver sensitivity. (p. 10)
➥ Stores a transmit frequency into a user chan-
TX
nel (except General versions) when:
• pushing [TX] ("$" flashes)
• pushing [CE] ("s" appears)
• entering the desired frequency via the keypad
• pushing and holding [TX] (p. 12)
➥ Selects the transmitter channel for cross
channel operation (Europe versions only)
when:
• pushing [TX] ("$" flashes)
• entering the desired channel number via the key-
pad
➥ Selects the transmit output power after push-
ing [FUNC]. (p. 9)
➥ Toggles the channel number input and fre-
CE
quency input.* (p. 8)
"
• "s
appears when frequency input* is selected.
• The channel selector and keypad changes the
frequency while "s" appears.
➥ Clears the entered digit and retrieves the pre-
vious channel (or frequency*) while entering
numbers. (p. 7)
➥ Enters the name programming condition,
after pushing [FUNC], for changing the chan-
nel name. (p. 12)
➥ Toggles the channel and frequency indica-
–
tions. (p. 6)
CH/FREQ
➥ Enters "–" for ITU simplex channels. (p. 7)
➥ Enter channel number with up to 4 or 5 digits
0
when "
" does not appear. (p. 7)
s
➥ Enter the frequency with up to 6 digits* when
to
9
"" appears. (p. 8)
!2 SQUELCH SWITCH [SQL] (p. 10)
➥ Activates the voice squelch function to reject un-
desired background noise while no signal is
being received.
• The squelch opens only when the received signal
contains no voice or FSK components.
➥ Starts and stops the scan function after pushing
[FUNC]. (p. 7)
!3 NOISE BLANKER SWITCH [NB] (p. 10)
Turns the noise blanker function on to remove
pulse-type noise such as engine ignition noise.
• "NB" appears when the function is turned on.
!4 AGC OFF SWITCH [AGC] (p. 10)
Deactivates the AGC function to receive weak sig-
nals blocked by strong adjacent signals.
• "ê" appears when the [AGC] switch is turned on
(stands for AGC deactivated).
!5 MODE SWITCH [MODE] (p. 9)
Selects an operating mode temporarily. Available
modes differ with version.
• J3E (USB), H3E, J2B (AFSK), FSK, R3E and A1A (CW)
modes are available.
• The temporary mode is cleared and the previous mode
appears when changing a channel.
!6 OVEN INDICATOR (GMDSS version only)
Internal high-stability crystal oscillator unit contains
a temperature-compensating oven heater. This
high-stability crystal oscillator improves frequency
stability.
• "STANDBY" appears when power to the main unit is
turned off.
!7 TRANSMIT FREQUENCY SWITCH [TX FREQ]
(p. 9)
Displays the transmit frequency and opens the
squelch to check and monitor the transmit fre-
quency.
!8 2182 kHz SELECTION SWITCH
[2182kHz •
] (p. iii)
RESET
➥ Selects channel 0 (2182 kHz; distress call fre-
quency).
• The channel selector does not function when select-
ing channel 0.
➥ Ignores external control and gives the front panel
control priority when an external controller
(NMEA format) is connected.
!9 ALARM SWITCH [ALARM] (p. iii)
➥ Emits a distress alarm signal from the speaker.
➥ Transmits a distress alarm or alarm testing signal
when pushed together with the [TX FREQ]
switch.
NOTE: General versions are not equipped with this
[ALARM] switch.
*Some versions do not have frequency selection and fre-
quency indication.
2
PANEL DESCRIPTION
3
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