IC-4088A_3_Draft.qxd 03.7.16 21:05 Page A (1,1) INSTRUCTION MANUAL FRS UHF FM TRANSCEIVER i4088A This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page i (1,1) Safety Training Information Your FRS radio generates RF electromagnetic energy during transmit mode. This radio is intended for use by “General Population” in uncontrolled environment. This radio has been tested and complies with the FCC RF exposure limits for “General population.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page ii (1,1) fety Training Information To ensure that your expose to RF electromagnetic energy is within the FCC allowable limits for general population/uncontrolled use, always adhere to the following guidelines: • DO NOT transmit for more than 50% of total radio use time (“50% duty cycle”). Transmitting more than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded. The radio is transmitting when the “TX indicator” lights red.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page iii (1,1) 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 RDANGER! NEVER operate the transceiver near unshielded electrical blasting caps or in an explosive atmosphere.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page iv (1,1) 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 children.
IC-4088A_3_Draft.qxd 03.7.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 1 (1,1) PREPARATION ■ Belt clip attachment 1 1 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 as illustrated below. q Remove the battery case cover from the transceiver. w Install 3×R6 (AA) size alkaline cell batteries or BP202. • Be sure to observe the correct polarity.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 2 (1,1) 2 PANEL DESCRIPTION ■ Switches, controls, keys and connectors q w Antenna e Function display (p.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 3 (1,1) PANEL DESCRIPTION 2 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. 2 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. 12) and voice scrambler code. (p. 16) ➥ Push and hold for 1 sec.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 4 (1,1) 2 PANEL DESCRIPTION ■ Function display qw e r t !0 o i u y 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 AUTO POWER OFF INDICATOR Appears while the auto power off function is ON. t LOW BATTERY INDICATOR Appears or blinks when the battery decreases to a specified level.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 5 (1,1) BATTERY CHARGING ■ Battery caution 3 CAUTION NEVER short the terminals. 2 NEVER mix old and new batteries. 3 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 during operation when the AC adapter or the optional cigarette lighter cable is connected.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 6 (1,1) 3 BATTERY CHARGING ■ Charging connections D Regular charging with the BC-149A, CP-18A ➥ Connect the optional BC-149A AC ADAPTER or CP-18A CIGARETTE LIGHTER CABLE to [DC 6V]. • Charging period: approx. 15 hours Optional CP-18A Cigarette lighter cable with DC-DC converter to cigarette lighter socket to [DC 6V] jack Optional BC-149A to AC outlet IMPORTANT!: Use the BC-149A or CP-18A ONLY.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 7 (1,1) BATTERY CHARGING 3 D Rapid charging with the BC-119N+AD-105 q Insert the optional AD-105 DESKTOP CHARGER ADAPTER into the charging slot of the BC-119N. w Insert the battery pack, either by itself or attached to the transceiver, into the charger. IC-4088A 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.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 8 (1,1) 4 BASIC OPERATION ■ Power ON ➥ Push [PWR] for 1 sec. to turn the power ON. • “ ” and operating channel number appear on the display. [PWR] ■ Adjusting the volume q Push and hold [MODE] for [VOL] 1 sec. to open the squelch (monitor function ON). • “ ” indicator appears on the disAppears play while the squelch is open. w Adjust the audio to a suitable level using [VOL]. e Push and hold [MODE] for 1 sec. to close the squelch.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 9 (1,1) BASIC OPERATION 4 ■ Selecting the operating channel Push [Y] or [Z] keys several times until the desired operating channel number appears on the display. • While pushing and holding [Y] or [Z] keys, the displayed channel changes continuously until channel number “1” appears. [Y] To keep the automatic selection, release the [Y] or [Z] keys then [Z] push and hold them again. • When displayed channel stops at channel number “1,” a beep is emitted.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 10 (1,1) 5 RECEIVE AND TRANSMIT q Select the desired operating channel with [Y]/[Z]. When a signal is received: • “ ” indicator appears on the display. • Squelch opens and audio is emitted from the speaker. [Y] - Further adjustment of [VOL] may be necessary at this point. [Z] w Push and hold [PTT] to transmit then speak into the microphone. • Do not hold the transceiver too Appears close to your mouth or speak too loudly. This may distort the sig- [PTT] nal.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 11 (1,1) RECEIVE AND TRANSMIT 5 ✔ Talk Range The IC-4088A is designed to maximize performance and improve transmission range in the field. However, the single most important factor in transmit range (talk power) is the surrounding environment. These radios are “line of sight” radios and as such, transmission range are influenced by the degree to which you can “see” the other communicating party.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 12 (1,1) 6 GROUP MODE (CTCSS) ■ Setting the group code The IC-4088A is equipped with 38 group codes. Group mode operation provides communication with silent standby since you will only receive calls from group members using the same group number. First of all, set the same group code number for all group member’s transceivers. To turn ON the group mode operation: q Push [MODE] to enter set mode. • “- - -” (group mode OFF) appears on the display.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 13 (1,1) GROUP MODE (CTCSS) 6 D CTCSS code table CH Freq. CH Freq. CH Freq. CH Freq. 01 02 03 04 05 06 07 08 09 10 67.0 71.9 74.4 77.0 79.7 82.5 85.4 88.5 91.5 94.8 11 12 13 14 15 16 17 18 19 20 97.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 21 22 23 24 25 26 27 28 29 30 136.5 141.3 146.2 151.4 156.7 162.2 167.9 173.8 179.9 186.2 31 32 33 34 35 36 37 38 --- 192.8 203.5 210.7 218.1 225.7 233.6 241.8 250.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 14 (1,1) 7 SCAN FUNCTION Scanning is an efficient way to locate signals quickly over all channels. Select scan resume condition in advance, using Initial Set Mode (p. 17) CH 1 CH 2 CH 14 CH 3 CH 5 D Starting the scan ➥ While pushing [Y], push [Z] to start the scan. • “-” flashes. • While pushing [Z], pushing [Y] also starts the scan. • Push [Z] or [Y] to change the scanning direction or resume [Y] the scan manually.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 15 (1,1) RING FUNCTIONS ■ Smart-Ring 8 The ring function has an answer back feature. This allows confirmation of whether or not a call has reached the receiving party even if the operator is temporarily away from the transceiver. q Set the same group channel number for all of the group transceivers. (See p. 12) w While pushing [PTT], push [Y] . • A beep is emitted and “ ” blinks [PTT] on the display. e Release the [PTT].
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 16 (1,1) 9 OTHER FUNCTIONS ■ Voice scrambler function The voice scrambler function provides communication privacy. q Push [MODE] twice to select voice scrambler setting mode. • “Sr-” appears on the display. w Push [Y]/[Z] to turn the function ON and OFF. •“ ” appears when the voice scrambler is activated. e Push [MODE] to exit voice scrambler setting mode. NOTE: All transceivers in a specific group MUST turn ON the voice scrambler function.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 17 (1,1) OTHER FUNCTIONS 9 D Beep tones ON/OFF Confirmation beep tones normally sound when a key is pushed. These can be turned ON or OFF. ON (on) OFF (oF) : Emits confirmation beep. : No confirmation beep. D Scan resume type Select the scan resume type from timer scan and pause scan. Timer scan (tS) : Scan resumes after the specified time period even signal is received. Pause scan (PS): Scan pauses until the signal disappears.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 18 (1,1) 9 OTHER FUNCTIONS D Ring tone type Ring tone is selectable with 10 different individual sounds. D LCD backlight The IC-4088A has LCD backlight light for nighttime operation, and the lighting condition can be selected to suits a specific preference, from Auto, ON and OFF. Auto (At) ON (on) OFF (oF) 18 : Lights when any switch, except [PTT], is pushed. When no key operation is performed for 5 sec., the backlight goes OFF. : Lights continuously.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 19 (1,1) OTHER FUNCTIONS 9 ■ Lock function This function electronically locks all keys and switches to prevent accidental channel changes and function access. ➥ Continue to hold [PWR] down for 2 sec. after power ON to turn the lock function ON and OFF. •“ ” appears on the display. - Only [PWR] and [PTT] are functional. “ ” appears when the - The Ring function is also available. lock function is in use. (See p.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 20 (1,1) 9 OTHER FUNCTIONS ■ ATS (Automatic Transponder System) This allows the user to confirm whether or not a call has reached the receiving party even if the operator is temporarily away from the transceiver. No “Ring” tone is emitted with this function. ➥ While pushing [PTT], push [MODE] to turn the function ON and OFF. • “ ” appears on the display. • The transceiver starts to send a [PTT] searching signal every 60 sec.
IC-4088A_3_Draft.qxd 03.7.16 21:05 Page 21 (1,1) OTHER FUNCTIONS 9 ■ Optional HM-75A functions The optional HM-75A allows remotely selected operating channels, open the squelch, etc. The switches on the HM-75A function as follows. CAUTION: When connecting the HM-75A to the transceiver, make sure that power to the transceiver is turned OFF, otherwise the transceiver may malfunction.
IC-4088A_3_Draft.qxd 03.7.16 21:06 Page 22 (1,1) 10 SPECIFICATIONS GENERAL • Frequency coverage : 462.5625–467.7125 MHz • No. of operating Ch. : 14 (simplex) • Mode : 11K0F3E (FM) • Frequency stability : ±2.5 ppm • Channel separation : 25 kHz • Power supply requirement : 3 AA (R6) alkaline, BP-202, BC-149A (negative ground) or CP-18A • Current drain : Less than 500 mA • Operating temp. range : –4˚F to +122˚F; –20˚C to +50˚C • No. of CTCSS freq.
IC-4088A_3_Draft.qxd 03.7.16 21:06 Page 23 (1,1) SPECIFICATIONS 10 D Channel number and group number Use this page to record a group operating channel number (see p. 9) and group code number (p. 12) for your reference. Operating channel number Group code number ï Channel frequency list CH Freq.(MHz) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 462.5625 462.5875 462.6125 462.6375 462.6625 462.6875 462.7125 467.5625 467.5875 467.6125 467.6375 467.6625 467.6875 467.
IC-4088A_3_Draft.qxd 03.7.16 21:06 Page 24 (1,1) 11 OPTIONS BP-202 Ni-Cd BATTERY PACK 3.6V/700 mAh Ni-Cd battery pack. BC-119N DESKTOP CHARGER + AD-105 DESKTOP CHARGER ADAPTER Rapidly charges battery pack in 1 to 1.5 hrs. An AC adapter is packed with the BC-119N. The AD-105 must be used with the BC-119N for charging the battery pack. The CP-17L or OPC-515L can be used instead of the supplied AC adapter. (p. 7) BC-149A AC ADAPTER Regularly charges installed BP-202 in 15 hours (approx.).
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IC-4088A_3_Draft.qxd 03.7.16 21:06 Page 26 (1,1) A-6274D-1US-w Printed in Japan © 2003 Icom Inc.
