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FM-4000Page 16
9 CONTROLS AND INDICATIONS
NOTE
This section defines each control of the transceiver. See the illustration
on the next page for the location of the controls For detailed operating
instructions, see Chapter 10.
9.1 CONTROLS AND CONNECTORS
VOLUME CONTROL
(
VOL/PWR
)
Adjusts the audio volume level. Turn the control clockwise to increase the
audio volume level.
Secondary Use
Controls the listen-back volume in the PA or Fog mode.
SQUELCH CONTROL
(
SQL
)
Adjust this control clockwise to set the point at which random noise on the
channel does not activate the audio circuits but a received signal does.
This point is called the squelch threshold. Be careful not to set the squelch
too high; reception of wanted transmissions will be degraded.
MIC Connector
Connects to the supplied noise-canceling speaker microphone.
KEYPAD
[
WX
]
Key
Immediately recalls the last-selected NOAA weather channel. Pressing
the
[
WX
]
key again reverts to the previously selected working channel.
Secondary use:
Press the
[
WX
]
key while pressing and holding the
[
16/9
]
key to switch
between USA, International and Canadian bands.
[
PWR
]
Key
Turns the transceiver on and off. To turn the transceiver on, press and
hold this key until the LCD turns on. To turn it off, press and hold this key
until the LCD turns off. When the power is turned on, the transceiver is
set to the last-selected channel.
[
16/9
]
Key
Immediately recalls CH16. Hold down the
[
16/9
]
key to recall CH9. Press
the
[
16/9
]
key again to revert to the previously selected working chan-
nel.
Secondary use:
Press the
[
WX
]
key while pressing and holding the
[
16/9
]
key to switch
between USA, International and Canadian bands.