Icom Ic-4088a Frs Uhf Fm Transceiver Instruction Manual

							INSTRUCTION MANUAL
FRS UHF FM TRANSCEIVERi4088A 
This device complies with Part 15 of the FCC rules. Oper-
ation is subject to the following two conditions: (1) This de-
vice may not cause harmful interference, and  (2) this
device must accept any interference received, including in-
terference that may cause undesired operation.
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							i
FOREWORDThank you for purchasing the IC-4088A FRS FM transceiver.
This FRS (Family Radio Service) FM transceiver meets the FCC
regulation (FCC Part 95). This transceiver is designed for those
who require top-grade quality, performance and outstanding re-
liability under the most demanding conditions.D D
FEATURES
❍
Free of user-license and applications
❍
Voice scrambler function for communication
privacy
❍
External DC-IN jack for both operation and
battery charging(Optional BC-149A or CP-18A is required)
❍
All 14 FRS channels are available
❍
Powerful 500 mW (ERP) high output power
❍
38 convenient group channels
ATS (Automatic Transponder System)
This convenient function automatically checks station availability
within the operating range, and alerts you via function display in-
dication. (p. 20)
In addition, a manual transponder is also available for “GROUP
MODE” operation to check availability of stations in a specified
group within the operating range. In this case, the transceiver
alerts you via beeps. (p. 12
)
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							WATER-RESISTANT* CONSTRUCTION
Water-resistant* construction is employed, and this unit can be
used in a wide range of applications.
*Meets JIS water-protection specification grade 4
.
GROUP MODE (BUILT-IN CTCSS: 
Continuous Tone
Coded Squelch System
)
CTCSS encoder/decoder are standard, providing quiet stand-by.
Audio (voice) signals are output only when a signal with matched
CTCSS tone signal is received. This is very helpful for group
communications. In addition, 38 different CTCSS frequencies
are available. (p. 12)
2 types of “Ring” function
The “Smart-Ring” function and the “Call-Ring” function are avail-
able for smart and simple station calls providing a telephone-
style ring when called. 10 different ringing tones are available.
(p. 18)
SUPPLIED ACCESSORY
• Belt clip ………………………………… 1
ii Icom, Icom Inc. and the  are registered trademarks of Icom Incor-
porated (Japan) in the United States, the United Kingdom, Germany,
France, Spain, Russia and/or other countries.
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							iii
IMPORTANTREAD ALL INSTRUCTIONScarefully and completely before
using the transceiver.
SAVE THIS INSTRUCTION MANUAL— This instruction man-
ual contains important operating instructions for the transceiver.PRECAUTIONRDANGER! NEVER
operate the transceiver near un-
shielded electrical blasting caps or in an explosive atmosphere.
RWARNING! NEVER
hold the transceiver so that the
antenna is very close to, or touching exposed parts of the body,
especially the face or eyes, while transmitting. The transceiver
will perform best if the microphone is 2 to 4 in. (5 to 10 cm)
away and the transceiver is vertical.
RWARNING! NEVER
operate the transceiver with a
headset or other audio accessories at high volume levels. Hear-
ing experts advise against continuous high volume operation. If
you experience a ringing in your ears, reduce the volume or dis-
continue use.
NEVER
attempt to charge alkaline cell batteries. Be aware
that external DC power connections will charge batteries inside
the battery case. This will damage not only the battery case but
also the transceiver.
DO NOT
push the PTT when not actually desiring to trans-
mit.
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PRECAUTION—
continued
USE
the optional AC adapter or cigarette lighter cable only for
both operating the transceiver and charging the battery. Other
manufacturer’s AC adapter, cigarette lighter cable or DC power
cable with external power supply may damage the transceiver.
Place the unit in a secure place to avoid inadvertent use by chil-
dren.
AV O I D
using or placing the transceiver in direct sunlight or in
areas with temperatures below –4˚F (–20°C) or above +122˚F
(+50°C).
The use of non-Icom battery packs/chargers may impair trans-
ceiver performance and invalidate the warranty.
Even when the transceiver power is OFF, a slight current still
flows in the radio. Remove the alkaline cells or battery pack
from the transceiver when not using it for a long time. Other-
wise, the installed batteries will become exhausted.
FCC WARNING: NEVERopen the transceiver’s case to make
any internal adjustments, changes or modifications by a person
who not expressly approved by Icom Inc., could void your au-
thority to operate this transceiver under FCC regulations. 
Any transceiver’s adjustments, replacement must be made by a
qualified technician using the proper test equipment. 
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TABLE OF CONTENTSFOREWORD …………………………………………………………………… i
SUPPLIED ACCESSORY ……………………………………………………… ii
IMPORTANT …………………………………………………………………… iii
PRECAUTION ……………………………………………………………… iii–iv
TABLE OF CONTENTS ……………………………………………………… v
1 PREPARATION …………………………………………………………… 1
Belt clip attachment ……………………………………………………… 1
Battery installation ……………………………………………………… 1
2 PANEL DESCRIPTION ………………………………………………… 2–4
Switches, controls, keys and connectors ……………………………… 2
Function display ………………………………………………………… 4
3 BATTERY CHARGING ………………………………………………… 5–7
Battery caution …………………………………………………………… 5
Charging connections …………………………………………………… 6
4 BASIC OPERATION …………………………………………………… 8–9
Power ON ………………………………………………………………… 8
Adjusting the volume …………………………………………………… 8
Selecting the operating channel ………………………………………… 9
5 RECEIVE AND TRANSMIT ………………………………………… 10–11
6 GROUP MODE (CTCSS) …………………………………………… 12–13
Setting the group code ………………………………………………… 12
7 SCAN FUNCTION ………………………………………………………… 14
8 RING FUNCTIONS ……………………………………………………… 15
Smart-Ring ……………………………………………………………… 15
Call-Ring ………………………………………………………………… 15
9 OTHER FUNCTIONS ………………………………………………… 16–21
Voice scrambler function ……………………………………………… 16
Initial set mode ………………………………………………………… 16
Lock function …………………………………………………………… 19
Low battery indicator …………………………………………………… 19
Auto power save ………………………………………………………… 19
ATS (Automatic Transponder System) ……………………………… 20
Resetting the transceiver ……………………………………………… 20
Optional HM-75A functions …………………………………………… 21
10 SPECIFICATIONS …………………………………………………… 22–23
11 OPTIONS ………………………………………………………………… 24
12 MEMO ……………………………………………………………………… 25
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1
PREPARATION
1
Belt clip attachmentAttach the belt clip using the
supplied screw. Conveniently
attaches to a belt.Battery installationInstall 3 R6 (AA) size alkaline cell batteries or the optional BP-202BATTERY PACK
as illustrated below.
qRemove the battery case
cover from the transceiver.
wInstall 3×R6 (AA) size alka-
line cell batteries or BP-
202.
• Be sure to observe the cor-
rect polarity.NOTE:Keep battery contacts clean. It’s good idea to clean bat-
tery terminals once a week.
Alkaline cellsBP-202
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2
PANEL DESCRIPTION
Switches, controls, keys and 
connectors
q
Antenna
Function
display
(p. 4)
Speaker Microphone w
e
r
t
y
ui
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2
PANEL DESCRIPTION
2
qEXTERNAL SPEAKER AND MICROPHONE JACKS
Connect an optional speaker-microphone or headset, if desired. 
wVOLUME CONTROL [VOL]
Rotate clockwise to increase and counterclockwise to decrease
volume.
ePTT SWITCH [PTT]
Push and hold to transmit; release to receive.
rMODE SWITCH [MODE]
➥Push to enter and select set mode for group (p. 12) and voice
scrambler code. (p. 16)
➥Push and hold for 1 sec. to turn the monitor function ON and
OFF. (p. 8)
tCHANNEL UP SWITCH [Y]
➥Push to increment the operating channel.
➥Push and hold to increment the operating channel continu-
ously.
➥While scanning, changes scanning direction. (p. 14)
yCHANNEL DOWN SWITCH [Z]
➥Push to decrement the operating channel.
➥Push and hold to decrement the operating channel continu-
ously.
➥While scanning, changes scanning direction. (p. 14)
uPOWER SWITCH [PWR]
➥Push to turn the power ON.
➥Push and hold this key to toggle the key lock function
ON/OFF. (p. 19)
iEXTERNAL DC IN JACK [DC 6V](p. 6)
Connects the optional AC adapter or cigarette lighter cable for
both operation and battery charging.
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2
PANEL DESCRIPTION
Function displayqKEY LOCK INDICATOR
Appears during the key lock function ON.
wBUSY INDICATOR
Appears while receiving a signal or when the squelch is open.
eVOICE SCRAMBLER INDICATOR
Appears while the voice scrambler function is in use.
rAUTO POWER OFF INDICATOR
Appears while the auto power off function is ON.
tLOW BATTERY INDICATOR
Appears or blinks when the battery decreases to a specified
level.
yGROUP NUMBER INDICATORIndicates the selected group number during the group function ON.uCHANNEL NUMBER INDICATOR
Indicates the selected operating channel number.
iPOWER ON INDICATOR
Appears while the power is ON.
oANSWER BACK INDICATOR
➥Appears when you and your group are in the conversation
area.
➥Blinks when you or your group is out of the conversation area.
!0TRANSMIT INDICATOR
Appears during PTT ON.
qewrt
y u i o !0
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