Icom ID-31A Instruction Manual - Page 33

■ Operating mode selection, ■ Receiving

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BASIC OPERATION 5 ■■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. ➥ P ush [FM/DV] one or more times to select a desired operating mode. FM mode selected FM FM-N DV FM-N mode selected DV mode selected ■■Receiving 1 Make sure a charged BP-271 or BP-272 battery pack, or a 2 BP-273 battery case with brand new alkaline batteries is at- 3 tached (pp. 1, 14). 4 qqHold down for 1 second to turn ON the power. 5 wwRotate [VOL] to adjust to a desired audio level. (p. 19) • T he frequency display shows the volume level while adjusting. 6 eeSet the receiving frequency. (p. 23) 7 r Set the squelch level. (p. 20) • W hile holding down [SQL], rotate [DIAL] one click to display the 8 squelch level. • "LEVEL1" is loose squelch (for weak signals) and "LEVEL9" is 9 tight squelch (for strong signals). 10 • "AUTO" indicates automatic level adjustment by a noise pulse counting system. 11 • Hold down [SQL] to manually open the squelch. t W hen a signal is received: 12 • Squelch opens and audio is output. 13 • TX/RX indicator lights green. • The S/RF-meter shows the relative signal strength level. 14 TX/RX indicator r Set squelch level 15 e Set frequency w Adjust audio level 16 17 r Push when setting 18 the squelch q (Push to monitor) 19 24

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5
BASIC OPERATION
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■
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
q
for 1 second to turn ON the power.
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.
q
r
Set squelch level
e
Set frequency
w
Adjust audio level
r
Push when setting
the squelch
(Push to monitor)
TX/RX
indicator