Operating Mode Selection; Receiving - Icom ID-31A Instruction Manual

■ Operating mode selection

Operating modes are determined by the modulation of the
radio signals. The transceiver has a total of three operating
modes; FM, FM-N and DV.
➥ Push [FM/DV] one or more times to select a desired
operating mode.
FM FM-N DV
FM mode selected
FM-N mode selected
DV mode selected

■ Receiving

Make sure a charged BP-271 or BP-272 battery pack, or a
BP-273 battery case with brand new alkaline batteries is at-
tached (pp. 1, 14).
Hold down for 1 second to turn ON the power.
q
Rotate [VOL] to adjust to a desired audio level. (p. 19)
w
• The frequency display shows the volume level while adjusting.
Set the receiving frequency. (p. 23)
e
r Set the squelch level. (p. 20)
• While holding down [SQL], rotate [DIAL] one click to display the
squelch level.
• "LEVEL1" is loose squelch (for weak signals) and "LEVEL9" is
tight squelch (for strong signals).
• "AUTO" indicates automatic level adjustment by a noise pulse
counting system.
• Hold down [SQL] to manually open the squelch.
t When a signal is received:
• Squelch opens and audio is output.
• TX/RX indicator lights green.
• The S/RF-meter shows the relative signal strength level.
TX/RX
indicator
r Push when setting
the squelch
(Push to monitor)
BASIC OPERATION
r Set squelch level
e Set frequency
w Adjust audio level
q
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