Icom IC-4088S Instruction Manual
INSTRUCTION MANUAL
UHF C.R.S. TRANSCEIVER
i4088S
FOREWORD
Thank you for purchasing the IC-4088S
Service) FM transceiver. This C.R.S. FM transceiver is designed for
those who require top quality, performance and outstanding reliability under the most demanding conditions.
UHF C.R.S. (Citizen Radio
IMPORTANT
READ ALL INSTRUCTIONS carefully and completely before using
the transceiver.
SAVE THIS INSTRUCTION MANUAL— This instruction manual
contains important operating instructions for the transceiver.
PRECAUTION
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 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.
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 operate the transceiver near unshielded electrical blast-
ing caps or in an explosive atmosphere.
DO NOT push the PTT when not actually desiring to transmit.
i
Place the unit in a secure place to avoid inadvertent use by children.
AVOID using or placing the transceiver in direct sunlight or in
areas with temperatures below 0°C or above +55°C.
The use of non-Icom battery packs may impair transceiver 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. Otherwise, the installed batteries will become exhausted.
DO NOT modify the transceiver for any reason.
KEEP the transceiver from the heavy rain, and NEVER immerse
it in the water. The transceiver construction is
weather resis-
tant, (meets JIS grade 4) not waterproof.
When the low battery indicator blinks, the performance of the transceiver cannot be guaranteed.
DO NOT transmit for more than 3 sec., when operating with the
group mode and/or call ring function. Transmission in a form other
than speech is limited, and should be of a duration of less than 3
sec. as a compliance to ACA requirements in Australia.
This device complies with Standard Australia
Specification No. AS/NZS4365-1996.
SUPPLIED ACCESSORY
• Belt clip ………………………………… 1
ii
TABLE OF CONTENTS
FOREWORD …………………………………………………………………… i
IMPORTANT …………………………………………………………………… i
PRECAUTION ………………………………………………………………… i–ii
SUPPLIED ACCESSORY……………………………………………………… ii
TABLE OF CONTENTS ……………………………………………………… iii
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 REPEATER FUNCTION ………………………………………………… 12
7 SCAN FUNCTION ………………………………………………………… 13
8 GROUP MODE (CTCSS) …………………………………………… 14–15
■ Setting the group code ………………………………………………… 14
9 RING FUNCTIONS ……………………………………………………… 16
■ Smart-Ring ……………………………………………………………… 16
■ Call-Ring ………………………………………………………………… 16
10 OTHER FUNCTIONS ………………………………………………… 17–22
■ Voice scrambler function ……………………………………………… 17
■ Initial set mode ………………………………………………………… 17
■ Lock function …………………………………………………………… 20
■ Low battery indicator …………………………………………………… 20
■ Auto power save………………………………………………………… 20
■ ATS (Automatic Transponder System) ……………………………… 21
■ Resetting the transceiver ……………………………………………… 21
■ Optional HM-75A functions …………………………………………… 22
11 OPTIONS…………………………………………………………………… 23
12 SPECIFICATIONS …………………………………………………… 24–25
13 WARRANTY …………………………………………………………… 26–27
iii
PREPARATION
Alkaline cells
BP-202
1
■ Belt clip attachment
Attach the belt clip using the
supplied screw. Conveniently
attaches to a belt.
■ Battery installation
Install 3 R6 (AA) size alkaline cell batteries or the optional BP-202
BATTERY PACK
qRemove the battery case
cover from the transceiver.
w Install 3×R6 (AA) size alka-
line cell batteries or BP-
202.
• Be sure to observe the correct polarity.
as illustrated below.
1
NOTE: Keep battery contacts clean. It’s good idea to clean bat-
tery terminals once a week.
1
2
q
Antenna
Function
display
(p. 4)
Speaker
Microphone
w
e
r
t
y
u
i
PANEL DESCRIPTION
■ Switches, controls, keys and
connectors
2
PANEL DESCRIPTION
q EXTERNAL SPEAKER AND MICROPHONE JACKS
Connect an optional speaker-microphone or headset, if desired.
w VOLUME CONTROL [VOL]
Rotate clockwise to increase and counterclockwise to decrease
volume.
e PTT SWITCH [PTT]
Push and hold to transmit; release to receive.
r MODE SWITCH [MODE]
➥ Push to enter and select set mode for group (p. 14) and voice
scrambler code. (p. 17)
➥ Push and hold for 1 sec. to turn the monitor function ON and
OFF. (p. 8)
t CHANNEL 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. 13)
y CHANNEL 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. 13)
u POWER SWITCH [PWR]
➥ Push to turn the power ON.
➥ Push to switch between repeater and simplex operation.
(p. 12)
➥ Push and hold this key to toggle the key lock function
ON/OFF. (p. 20)
i EXTERNAL DC IN JACK [DC 6V] (p. 6)
Connects the AC adapter or DC power cable for battery charging.
2
2
3
PANEL DESCRIPTION
qewtry
uio!0
!1
2
■ Function display
q KEY LOCK INDICATOR
Appears during the key lock function ON.
w BUSY INDICATOR
Appears while receiving a signal or when the squelch is open.
e VOICE SCRAMBLER INDICATOR
Appears while the voice scrambler function is in use.
r REPEATER INDICATOR
Appears when repeater operation is selected.
t AUTO POWER OFF INDICATOR
Appears while the auto power off function is ON.
y LOW BATTERY INDICATOR
Appears or blinks when the battery decreases to a specified level.
u GROUP NUMBER INDICATOR
Indicates the selected group number during the group function ON.
i CHANNEL NUMBER INDICATOR
Indicates the selected operating channel number.
o POWER ON INDICATOR
Appears while the power is ON.
!0 ANSWER 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.
!1 TRANSMIT INDICATOR
Appears during PTT ON.
4
BATTERY CHARGING
3
■ Battery caution
CAUTION NEVER short the terminals.
NEVER mix old and new batteries.
NEVER incinerate used battery cells. Internal battery gas may
cause explosion.
Make sure all battery cells are the same brand, type and capacity.
AVOID over charging— The BP-202 can be charged when the AC
adapter or the DC power cable with a DC power supply is connected. To prevent over charging, the IC-4088S has charging timer
that automatically disconnecting the charging line electronically
after 15 hours from charging. However, the charging timer will reset
and start charging again when disconnect then re-connecting the
AC adapter or DC power cable more than 1 min. interval.
Recommended temperature range for charging: +10˚C to +40˚C
NEVER connect an AC adapter or DC power cable with an external
DC power supply that outputs lower than 5.7 V DC and more than
6.3 V DC voltage when charging the installed BP-202.
The optional BP-202
batteries and can be charged approx. 300 times. Charge the battery
pack before first operating the transceiver or when the battery pack
becomes exhausted.
If the battery pack seems to have no capacity even after being fully
charged, completely discharge it by leaving the power ON all day.
Then, fully charge the battery pack again.
If the battery pack still does not retain a charge (or very little), a new
battery pack must be purchased.
BATTERY PACK
includes rechargeable Ni-Cd
2
3
DD
Operating period
Depending on the installed battery, the operating period of the
transceiver varies. Refer to p. 24 for operating period details.
5
BATTERY CHARGING
to [DC 6V]
jack
DC power cable
AC adapter
to a DC power supply
to AC outlet
Turn the power OFF!
When the installed Ni-Cd
battery is nearly exhausted
and the function display
blinks in intermittently,
push [PWR] until the transceiver’s power goes OFF.
*About the plug
Polarity:
Outer: 4.0±0.1 mm (d)
Inner: 1.7±0.05 mm (d)
Length: 9.5±0.5 mm
+_
*
*
3
■ Charging connections
DD
Regular charging via [DC 6V] jack
➥ Connect the AC adapter or DC power cable with an external DC
power supply to [DC 6V].
• The supplied voltage must be within the range of 5.7 to 6.3 V
DC.
• Charging period: approx. 15 hours
IMPORTANT!:
Use the AC adapter or DC power cable with an external DC
power supply (6.0 V DC ±0.3 V), which specified by Icom Aus-
tralia, ONLY. Other type of AC adapter or DC power cable with
an external power supply may damage the transceiver.
The optional BP-202 can only be charged— other AA (R6) size
rechargeable Ni-Cd cannot be charged.
6
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