ICOM orporated IC-T81A User Manual manual

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Date Submitted	1999-02-03 00:00:00
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IC-T81A/E Manual
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Page A (1,1)
INSTRUCTION MANUAL
MULTIBAND FM TRANSCEIVER
iT81A/E
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.
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IMPORTANT
READ ALL INSTRUCTIONS
CAUTIONS
carefully and com-
pletely before using the transceiver.
SAVE THIS INSTRUCTION MANUAL—This instruction manual contains important operating instructions for
the IC-T81A/E.
EXPLICIT DEFINITIONS
The explicit definitions below apply to this instruction manual.
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
(2 to 4 in) away from the lips and the transceiver is vertical.
RWARNING! NEVER operate the transceiver with a
headset or other audio accessories at high volume levels.
Hearing experts advise against continuous high volume operation. If you experience a ringing in your ears, reduce the
volume or discontinue use.
NEVER
connect the transceiver to an AC outlet or to a
power source of more than 16 V DC. Such a connection will
damage the transceiver.
NEVER
connect the transceiver to a power source that is
DC fused at more than 5 A. Accidental reverse connection will
be protected by this fuse, higher fuse values will not give any
protection against such accidents and the transceiver will be
ruined.
Versions of the IC-T81A/E which display the “CE” symbol on the serial number seal, comply with the ETSI
specification ETS300 684 (EMC product standard for
Commercially Available Amateur Radio Equipment).
ii
NEVER attempt to charge alkaline or dry cell batteries. Beware that external DC power connections will charge batteries
inside the battery case. This will damage not only the battery
case but also the transceiver.
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SUPPLIED ACCESSORIES
DO NOT push the PTT when not actually desiring to trans-
Accessories included with the transceiver:
mit.
Place unit in a secure place to avoid inadvertent use by children.
DO NOT
operate the transceiver near unshielded electrical blasting caps or in an explosive atmosphere.
➀ Battery pack (BP-199 or BP-200) . . . . . . . . . . . . . . . . . 1
➁ Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
➂ Handstrap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
➃ Belt clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
*Some versions are supplied with a wall charger.
AVOID using or placing the transceiver in direct sunlight or
in areas with temperatures below –10°C (+14°F) or above
+60°C (+140°F).
The use of non-Icom battery packs/chargers may impair
transceiver performance and invalidate the warranty.
Even when the transceiver power is OFF, a slight current still
flows in the circuits. Remove the battery pack or case from
the transceiver when not using it for a long time. Otherwise,
the battery pack or installed Ni-Cd batteries will become exhausted.
For USAonly:
Caution: Changes or modifications to this transceiver, not expressly approved by Icom Inc., could void your authority to
operate this transceiver under FCC regulations.
iii
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TABLE OF CONTENTS
IMPORTANT ...................................................................................................ii
EXPLICITDEFINITIONS ................................................................................ii
CAUTIONS .....................................................................................................ii
SUPPLIED ACCESSORIES...........................................................................iii
TABLE OF CONTENTS .................................................................................iv
1 ACCESSORYATTACHMENT...................................................................1
2 PANELDESCRIPTION .........................................................................2–5
■ Switches, controls, keys and connectors ...............................................2
■ Function display .....................................................................................4
3 BATTERYPACKS AND CHARGING ...................................................6–8
■ Battery pack charging ............................................................................6
■ Charging precautions.............................................................................6
■ About battery packs ...............................................................................6
■ Charging connections ............................................................................7
■ Battery case ...........................................................................................8
4 BASIC OPERATION ...........................................................................9–14
■ Power ON ..............................................................................................9
■ Setting a frequency ................................................................................9
■ Setting tuning steps .............................................................................10
■ Selecting a memory channel ................................................................11
■ Lock function ........................................................................................11
■ Receive and transmit ...........................................................................11
■ FM broadcast reception .......................................................................12
■ Air band reception................................................................................12
■ Narrow FM operation ...........................................................................12
■ RIT/VXOa function ...............................................................................13
■ Receive mode ......................................................................................14
5 REPEATER OPERATION .................................................................15–17
■ General ................................................................................................15
■ Subaudible tones for repeater use .......................................................16
iv
■ Setting an offset frequency ..................................................................16
■ Auto repeater function .........................................................................17
6 MEMORY/CALLPROGRAMMING ...................................................18–20
■ General ................................................................................................18
■ Programming a memory channel.........................................................18
■ Memory editing ....................................................................................19
■ Memory names ....................................................................................20
7 DTMF MEMORY .....................................................................................21
■ Programming a DTMF code ................................................................21
■ Transmitting a DTMF code ..................................................................21
8 SCAN FUNCTIONS ..........................................................................22–24
■ Scan types ...........................................................................................22
■ Full/programmed scan .........................................................................23
■ Memory (skip) scan .............................................................................23
■ Skip channel setting .............................................................................24
■ Scan resume condition ........................................................................24
9 SUBAUDIBLE TONE OPERATION ..................................................25–26
■ Tone squelch........................................................................................25
■ Tone scan ............................................................................................26
■ Pocket beep operation .........................................................................26
10 OTHER FUNCTIONS ........................................................................27–30
■ Help function ........................................................................................27
■ Initial set mode.....................................................................................27
■ Resetting the CPU ...............................................................................29
■ Cloning.................................................................................................30
11 TROUBLESHOOTING ............................................................................31
12 SPECIFICATIONS...................................................................................32
13 OPTIONS ................................................................................................33
14 MODE ARRANGEMENT ..................................................................34–35
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ACCESSORY ATTACHMENT
D Antenna
D Handstrap
D Belt clip
Screw the supplied antenna onto the
antenna connector as shown in the diagram below.
Attach the handstrap to the belt clip, before attaching the belt clip to the transceiver, as below.
Attach the belt clip to the transceiver as
illustrated below.
Keep the jack cover attached when
jacks are not in use to avoid bad contacts.
uCAUTION:
Transmitting
without the antenna may damage the
transceiver.
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PANEL DESCRIPTION
■ Switches, controls, keys and connectors
q MULTIFUNCTION SWITCH [MULTI]
➥ Push to select the tone or duplex menu. (pgs. 15–17);
push for 1 sec. to enter set mode (pgs. 27–29).
➥ Push ↕ to increase/decrease the volume (p. 11).
➥ Push ↔ to change the operating band; push for 1 sec.
to start a scan (p. 23).
w SQUELCH SWITCH [SQL] (p. 11)
➥ Push and hold to open the squelch.
➥ While pushing, rotate [DIAL] to adjust the squelch setting.
e TX/RX INDICATOR (p. 11)
Lights red while transmitting; green while receiving (or
when the squelch is open).
r PTT SWITCH [PTT] (p. 11)
Push and hold to transmit; release to receive.
t POWER SWITCH [PWR] (p. 9)
Push for 1 sec. to turn power on and off.
y ANTENNA CONNECTOR (p. 1)
Connects the supplied antenna.
NOTE: In this manual—
Push [MULTI] means push directly;
Push [MULTI(↕)] means push up or down; and
Push [MULTI(↔)] means push left or right. See q above.
u EXTERNAL SPEAKER AND MICROPHONE JACKS
[SP/MIC]
Connect an optional speaker-microphone or headset, if desired. The internal microphone and speaker will not function when either is connected. (See p. 33 for options.)
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PANEL DESCRIPTION
!2 OUTPUT POWER KEY [H/L(LOCK)Î]
➥ Push to toggle between low and high power. (p. 11)
• “LOW” appears while low power is selected.
➥ Push for 1 sec. to toggle the lock function on/off. (p. 11)
• “L” appears while the lock function is activated.
☞ NOTE: When connecting or disconnecting an external
➥ While pushing [PTT], this key sends a DTMF “D.” (p. 21)
speaker-microphone, first turn off power to the transceiver.
!3 RIT KEY [RIT(TSCAN)#] (p. 13)
➥ Push, then rotate [DIAL] to change the RIT/VXO setting.
i TUNING CONTROL [DIAL]
Changes the operating frequency; memory channel in
memory mode; set mode contents in set mode, etc.
o VFO/CLEAR KEY [VFO(CLR/MHz)Å]
➥ Push to select VFO mode. (p. 9)
➥ Cancels some functions such as digit input before entry,
scans, etc.
➥ Push and hold for 1 sec., then rotate [DIAL] to change
the MHz digit. (p. 10)
➥ While pushing [PTT], this key sends a DTMF “A.” (p. 21)
!0 MEMORY MODE KEY [MR(MW)ı]
➥ Push to select memory mode. (p. 11)
• “X” appears while in memory mode.
➥ Push for 1 sec. to enter memory write mode. (p. 18)
➥ While pushing [PTT], this key sends a DTMF “B.” (p. 21)
!1 CALL KEY [CALLÇ]
➥ Push to select the call channel. (p. 19)
➥ While pushing [PTT], this key sends a DTMF “C.” (p. 21)
• This function is only available for the 1.2 GHz band and RIT
or VXO must be activated in set mode (p. 13).
➥ Push for 1 sec. to turn the tone scan function on/off. (p.
26)
➥ While pushing [PTT], this key sends a DTMF “F.” (p. 21)
!4 DIGIT KEYS
➥ Input the specified digit during frequency input, memory
channel selection, etc.
➥ Transmit the DTMF code of the specified digit while
pushing [PTT]. (p. 21)
!5 MHz KEY [• (M)] (p. 10)
➥ Used as a shortcut for inputting frequencies.
➥ Transmits an “E” for DTMF operation while pushing
[PTT].
!6 EXTERNAL DC POWER JACK [DC13.5V]
Allows you to operate the transceiver with a 4.5 to 16 V DC
power source using optional cables, CP-12Lor OPC-254L.
u CAUTION: DO NOT connect when a battery case is attached.
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PANEL DESCRIPTION
■ Function display
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PANEL DESCRIPTION
q FREQUENCY INDICATION
Shows the selected frequency, set mode contents, etc.
w MODE INDICATORS
Indicate the operating mode.
e DUPLEX INDICATOR (p. 15)
Appears during semi-duplex operation.
•“–DUP” appears for minus duplex; “DUP” appears for plus duplex.
r TONE INDICATORS
“T” appears when the subaudible tone encoder (p. 15) is in
use; “T SQLS” appears during pocket beep operation
(p. 26) and “T SQL” appears when the tone squelch function (p. 25) is activated.
o RIT/VXO INDICATOR (p. 13)
Appears when either the RIT or VXO function is activated
and the 1.2 GHz band is selected.
!0 LOW POWER INDICATOR (p. 11)
Appears when low output power is set.
!1 VOLUME INDICATOR
Appears while adjusting the volume.
• Indicators also appear in place of the operating frequency while
adjusting volume to visually indicate the selected volume level.
t SKIP INDICATOR (p. 23)
Appears when the selected channel is set as a “skip” channel.
y MEMORY MODE INDICATOR (p. 11)
Appears while in memory mode.
u MEMORY CHANNEL INDICATOR
Indicates the selected memory channel and other items
such as the call channel, set mode items, etc.
i S/RF INDICATORS (p. 11)
Show the relative signal strength while receiving and the
output power selection while transmitting.
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BATTERY PACKS AND CHARGING
■ Battery pack charging
■ About battery packs
The supplied* BP-198, BP-199 or BP-200 BATTERY PACK includes rechargeable Ni-MH batteries and can be charged approx. 300 times. Charge the battery pack before first
operating the transceiver or when the battery pack becomes
exhausted.
D Operating period
*Optional for versions which come with the BP-197 BATTERY CASE.
If you want to get the longest life out of your battery pack
(300+ charges), the following points should be observed:
1. Avoid overcharging. The charging period should be less
than 15 hours.
2. Use the battery until it becomes completely exhausted
under normal conditions. We recommend battery charging
just after transmitting becomes impossible.
Depending on attached battery pack, the operating period of
the transceiver varies. When the approx. voltage of battery
packs BP-198, BP-199 or BP-200 falls to 4, 5 or 8 V, respectively, charging is necessary. Refer to p. 33 for operating period details.
D Battery life
If your battery pack seems to have no capacity even after
being fully charged, completely discharge it by leaving the
power ON overnight. 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.
☞ NOTE: When using a battery pack for the first time or after
■ Charging precautions
NEVER attempt to charge alkaline batteries. This will cause
internal liquid leakage and damage the battery case and
transceiver.
NEVER connect two or more chargers at the same time.
Charging may not occur under temperatures of 10°C (50°F)
or over temperatures of 40°C (104°F).
long periods of inactivity between charges (approx. 2
months or more), the battery pack will not be able to retain
a full charge immediately. Subsequent charge/discharge
cycles will eventually bring the battery pack up to full
charge capacity.
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BATTERY PACKS AND CHARGING
■ Charging connections
Charging periods: 1 hour (w/BP-198 or BP-199)
1.5 hours (w/BP-200)
D Regular charging
Attach the supplied or optional
battery pack;
then, connect the
supplied* wall
charger via an AC
outlet as shown at
right.
Charging period:
15 hours
*Optional for versions which include
a battery case.
D Rapid charging with the BC-119
➀ Fix the optional AD-88
TERMINAL PC BOARD FOR CHARGER
into the BC-119 with the 4 supplied screws.
➁ Insert the optional AD-87A CHARGEADAPTER into the charging slot of the BC-119.
➂ Insert the optional AD-87B CHARGE ADAPTER into AD-87A
(check orientation).
➃ Insert the battery pack, either by itself or attached to the
transceiver, into the whole assembly for charging (see
right).
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BATTERY PACKS AND CHARGING
D Operation with an optional cable
Connect an optional charger or cable to the transceiver as illustrated below. Be careful of battery overcharging as the
connected battery is charged simultaneously.
u CAUTION: When the BP-197
BATTERY C A S E
nected, charging cannot take place.
*To charge the battery pack
13 to 16 V DC is necessary.
is con-
■ Battery case
When using a battery case attached to the transceiver, install
3 AA(R6) size alkaline batteries as illustrated below.
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BASIC OPERATION
■ Power ON
■ Setting a frequency
☞ NOTE: Charge the battery pack before turning power on
D Via the keypad
for the first time (pgs. 6–8)
(from the MHz digits)
➀ Push [VFO] to select VFO
Push and hold [PWR] for 1 sec. to turn power on.
• Current battery voltage may be displayed for 2 sec.
• The display shows the approx. voltage in 0.5 V steps.
• When the battery voltage is lower
than a specified level (varies according to battery pack used), “LOW V”
appears. Charge the battery pack in
this case; when using a battery case
with alkaline cells this indication does
not appear.
• If “OVER V” appears, UNPLUG the
external DC plug immediately. Connected voltage is over 16 V and could
damage the transceiver.
mode.
➁ Push digit keys corresponding to the desired frequency.
• When inputting a frequency in
the 50 MHz band, it is necessary to input the decimal
point.
•When a digit is mistakenly
input, push [VFO] and input
from the beginning.
•When an unacceptable frequency is input, the display reverts to the previously
displayed frequency.
•“0,” “2,” “5” and “7” are acceptable as the 1 kHz digit input
depending on the 10 kHz digit.
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BASIC OPERATION
D Via the keypad
(from the decimal point)
➀ Push [VFO] to select VFO
mode.
➁ Push [•] to leave the MHz
setting as is and input from
the kHz digits.
■ Setting tuning steps
USING
SET MODE
The transceiver has 9 tuning steps* (each band has independent settings) as follows:
5 kHz
10 kHz
12.5 kHz
15 kHz
20 kHz
25 kHz
30 kHz
50 kHz
100 kHz
*The 5 and 15 kHz steps are not available on the 1200 MHz band.
➀ Push [VFO] to select VFO mode.
➁ Push [MULTI(↔)] to select the desired band.
➂ Push [MULTI] for 1 sec. to enter set mode.
➃ Push [MULTI(↕)] one or more times
until “TS” appears.
➄ Push [MULTI(↔)] (or rotate [DIAL])
to select the desired tuning step.
➅ Push [VFO] to exit set mode.
✔CONVENIENT
D Other methods
➥ Via the [DIAL]: Rotate [DIAL] to change the frequency ac cording to the set tuning steps.
➥ Via the MHz STEP: Push [ (VFO)MHz] for 1 sec., then rotate [DIAL] to change the frequency in 1 MHz steps.
10
Select a tuning step that matches the frequency intervals of
repeaters in your area.
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BASIC OPERATION
■ Selecting a memory channel
■ Receive and transmit
➀ Push [MR] to select mem-
➀ Push [PWR] for 1 sec. to turn power on.
➁ Push [MULTI(↕)] to set a volume level.
➂ Set the squelch level.
ory mode.
➁ Push [MULTI(↔)] (or rotate
[DIAL] or push digit keys) to
select the desired memory
channel.
•Only programmed memory
channels can be selected.
•Memory channels 1–9 are
preceded with a “0” when selecting with the digit keys;
push “0@” to select scan edge
0A, push “0 ?” to select scan
edge 0B.
■ Lock function
Push [(H/L)LOCK] for 1 sec. to toggle
the lock function on and off.
• “L” appears while the lock function is activated.
•[PTT], [PWR], [MULTI(↕)] (volume), [SQL] and [H/L] can be used
even when the lock function is activated.
•While pushing [SQL], rotate [DIAL].
•10 selections are available, “OPEN,”
“AUTO,” and “SQL1 to “SQL8.”
➃ Set an operating band and frequency.
•When a signal is received:
➟ Squelch opens and audio is emitted from the speaker.
➟ The [TX/RX] indicator lights green.
➄ Push [H/L] to toggle output power between high and low.
•“LOW” appears when low output power is selected.
➅ Push and hold [PTT] to transmit; then speak into the mic.
• Do not hold the microphone too close to your mouth or speak
too loudly. This may distort the signal.
•The S/RF indicator shows the output power selection.
•The [TX/RX] indicator lights red.
➆ Release [PTT] to return to receive.
✔CONVENIENT
Monitor function: Push and hold [SQL] to listen to weak signals that do not open the squelch.
11
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BASIC OPERATION
■ FM broadcast reception
The transceiver can receive FM radio broadcasts. These are
typically in the range 76–107.995 MHz (88–107.995 for some
versions) and are in WFM receive mode.
To select the FM broadcast band:
➥ Push [MULTI(↔)] one or more
times until “WFM” appears in the
display, then rotate [DIAL] to select
a frequency; or,
➥ Select a frequency with the digit keys directly.
play, then rotate [DIAL] to select a frequency; or,
➥ Select a frequency with the digit keys directly.
•“AM” automatically appears when a frequency in the range
118–135.995 MHz is input.
☞ NOTE: When pushing [PTT], “OFF” appears indicating the
frequency and mode are outside the permitted range.
SET MODE
■ Narrow FM*
operation (Eur., France, Italy ver. only)
USING
•“WFM” automatically appears when a frequency in the range
76–107.995 MHz is input.
➀ Push [MULTI(↔)] one or more
☞ NOTE: When pushing [PTT], “OFF” appears indicating the
➁ Push [MULTI] for 1 sec. to enter set
frequency and mode are outside the permitted range.
times to select the 144 MHz band.
mode.
➂ Push [MULTI(↕)] one or more times
to display “MO,” if necessary.
■ Air band reception (USA ver. only)
The transceiver can receive frequencies reserved for commercial/private aircraft and ground support. These are in the
range 118–135.995 MHz and are in AM receive mode.
To select the air band:
➥ Push [MULTI(↔)] one or more
times until “AM” appears in the dis12
➃ Push [MULTI(↔)] (or [DIAL]) to toggle narrow FM operation on and
off.
• “FM” appears when narrow FM
operation is on.
➄ Push [VFO] to exit set mode and return to regular operation.
☞ *NOTE: FM narrow operation can be set for individual
memory channels or in VFO mode; narrow FM affects
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BASIC OPERATION
■ RIT/VXO function (1200 MHz band)
In the 1200 MHz band, differences between actual and displayed frequencies can often be large. The RIT (receive incremental tuning) function allows you to compensate the
displayed frequency for differences in the actual receive frequency; the VXO (variable crystal oscillator) function allows
you to compensate the displayed frequency for differences in
the actual receive and transmit frequencies.
D Activating RIT/VXO
USING
SET MODE
➀ Select a frequency in the 1200 MHz band (or a memory
channel with a 1200 MHz band frequency; or the 1200
MHz band call channel).
➁ Push [MULTI] for 1 sec. to enter set mode.
➂ Push [MULTI(↕)] one or more times until “rV” appears.
➃ Push [MULTI(↔)] one or more
times to select “RIT” (RIT activated,
“VXO” (VXO activated) or “OFF”
(neither activated)—[DIAL] can
also be used.
➄ Push [VFO] to exit set mode and
return to the previously selected
mode.
D Adjusting the frequency with RIT/VXO
Make sure that RIT or VXO is activated in set mode and that
the 1200 MHz band is selected.
➀ Select a frequency in the 1200 MHz band (or a memory
channel with a 1200 MHz band frequency; or the 1200
MHz band call channel).
➁ Push [RIT] to display the frequency
offset in kHz.
➂ Push [MULTI(↔)] one or more
times (or rotate [DIAL]) to adjust
the frequency offset.
•The frequency offset can be set
±5 kHz in 1 kHz steps.
➃ Push [VFO] to return to regular display indication.
• When RIT or VXO is activated, “:” appears above the decimal point in the
frequency indication (in the 1200 MHz band).
13
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BASIC OPERATION
■ Receive mode
USING
SET MODE
The IC-T81A/E allows you to receive frequencies in the 50
MHz band in AM mode (as well as to transmit in FM narrow
mode in the 144 MHz band for Italy/Europe versions only—
see p. 12).
➀ Push [VFO] to select VFO mode.
➁ Push [MULTI(↔)] one or more
times to select the 50 MHz band.
➂ Push [MULTI] for 1 sec. to enter set
mode.
➃ Push [MULTI(↕)] one or more times
until “MO” appears.
➄ Push [MULTI(↔)] (or rotate [DIAL])
one or more times to select “AM.”
➅ Push [VFO] to exit set mode and return to VFO mode.
•“AM” appears when frequencies in the 50 MHz band are selected.
☞ NOTE:
➥ When AM operation is selected, transmit is not possible.
When [PTT] is pushed, “OFF” appears.
➥ AM operation can also be selected for individual memory channels programmed with 50 MHz frequencies. In
this way you can program individual frequencies for AM
receive while allowing regular transmit/receive for 50
MHz frequencies in VFO mode.
14
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REPEATER OPERATION
■ General
When using a repeater, the transmit frequency is shifted from
the receive frequency by the offset frequency. It is convenient
to program repeater info into memory channels (pgs. 18–20).
➀ Set the operating band and receive frequency (repeater
output frequency).
➁ Push [MULTI] to enter duplex set mode.
• “D” appears; if “T” appears instead of “D” push [MULTI(↕)] to select “D.”
➂ Push [MULTI(↔)] (or rotate [DIAL]) one or more times to
select DUP ( plus duplex) or –DUP (minus duplex).
•When the auto repeater function is in use (USAversion only) this
selection and steps ➃ and ➄ are not necessary (p. 17).
➃ Push [MULTI(↕)] to select tone set mode.
•“T” appears.
➄ Push [MULTI(↔)] (or rotate [DIAL]) to activate the subaudible tone encoder according to repeater requirements.
•Refer to the table of subaudible tone frequencies on the following
page.
D Tone information
Some repeaters require a tone to be accessed. In this case,
precede step ➅ at left with the required tone.
DTMF TONES
While pushing [PTT], push the desired digit key(s) to transmit
DTMF tones.
• The transceiver has 9 DTMF memory channels. See p. 21 for details.
1750 Hz TONE
While pushing [PTT], push and hold [MULTI] for 1 to 2 sec.
to transmit a 1750 Hz tone signal.
✔ Convenient
Tone scan function: When you don’t know the subaudible
tone used for a repeater, the tone scan is convenient for detecting the tone frequency.
Push [(RIT)TSCAN)] for 1 sec. to activate the tone scan. See
p. 26 for more details.
➅ Push and hold [PTT] to transmit.
•The displayed frequency automatically changes to the transmit
frequency (repeater input frequency).
•If “OFF” appears, check the offset frequency (p. 16).
➆ Release [PTT] to receive.
➇ Push and hold [SQL] to check whether the other station’s
transmit signal can be directly received or not.
15
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REPEATER OPERATION
■ Subaudible tones
for repeater use
USING
SET MODE
USING
SET MODE
Some repeaters require subaudible tones to be accessed.
Subaudible tones are superimposed over your normal signal
and must be set in advance.
When communicating through a repeater, the transmit frequency is shifted from the receive frequency by an amount
determined by the offset frequency.
➀ Push [VFO] to select VFO mode.
➁ Push [MULTI(↔)] to select a band.
➂ Push [MULTI] for 1 sec. to enter set
➀ Push [VFO] to select VFO mode.
➁ Push [MULTI(↔)] to select a band.
➂ Push [MULTI] for 1 sec. to enter set
mode.
mode.
➃ Push [MULTI(↕)] one or more times
➃ Push [MULTI(↕)] one or more times
until “rT” appears.
until “OW” appears.
➄ Push [MULTI(↔)] (or rotate (DIAL)
➄ Push [MULTI(↔)] (or rotate (DIAL)
to select the desired subaudible
tone.
➅ Push [VFO] to enter the selected tone and exit set mode.
Available subaudible tone frequencies
67.0
69.3
71.9
74.4
77.0
16
■ Setting an offset
frequency
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
(unit: Hz)
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
to select the desired offset.
•The offset frequency changes according to the selected tuning
steps.
•The MHz step may be helpful for large frequency changes—push
[(VFO) MHz] for 1 sec.
➅ Push [VFO] to enter the selected offset and exit set mode.
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REPEATER OPERATION
INITIAL SET MODE
■ Auto repeater
function (USAversion only)
USING
The USAversion automatically activates the repeater settings
(duplex, ON/OFF, duplex direction, tone encoder ON/OFF)
when the operating frequency falls within or outside of the
general repeater output frequency range. The offset and repeater tone frequencies are not changed by the auto repeater
function, reset these frequencies, if necessary.
➀ While pushing [MULTI], push
[PWR] to turn power on and enter
initial set mode.
➁ Push [MULTI(↕)] one or more times
until “Ar” appears.
➂ Push [MULTI(↔)] (or rotate [DIAL]
to select the desired condition.
Frequency range and offset direction
FREQUENCYRANGE
DUPLEX DIRECTION
145.200– 145.495 MHz
146.610– 146.995 MHz
“–DUP” appears
147.000– 147.395 MHz
“DUP” appears
442.000– 444.995 MHz
“DUP” appears
447.000– 449.995 MHz
“–DUP” appears
51.620–
52.500–
53.500–
51.980 MHz
52.980 MHz
53.980 MHz
1282.000–1287.995 MHz*
1288.000–1295.995 MHz
“–DUP” appears
“–DUP” appears
*When operating in this range, the offset frequency must be set to
–12 MHz (see previous page for setting an offset).
•“OFF”—the auto repeater function is
turned off;
“ON1”—the auto repeater function activates for duplex only;
“ON2”—the auto repeater function activates for duplex and tone.
➃ Push [VFO] to exit initial set mode.
17
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MEMORY/CALL PROGRAMMING
■ General
The transceiver has 124 memory channels (100 regular, 10
pairs of scan edge channels for mixed bands and 1 call channel for each band—VHF, UHF, 50 MHz and 1200 MHz). Note
that memory channels are not grouped according to band. In
other words, a given memory channel can be programmed
with either a VHF frequency, a UHF frequency, a 50 MHz frequency or a 1200 MHz frequency. This is not the case with
call channels. Call channels are band specific.
The following can be programmed into memory/call channels:
• Operating frequency
• Duplex direction with an offset frequency (pgs. 15, 16)
• Subaudible tone encoder or tone squelch on/off with a tone
(CTCSS) frequency (pgs. 25, 26)
•Subaudible tone and tone squelch frequencies (pgs. 16, 25)
• Mode—AM, FM, etc. (p. 14)
• Skip information* (p. 23)
*Except for scan edge memory channels and call channels.
☞ NOTE:
➥ Memory channels can be assigned names (of up to 6
characters).
➥ When memory names are assigned, each push of [MR]
toggles between frequency and name indication.
18
■ Programming a memory
channel
➀ Push [VFO] to select VFO mode.
➁ Set the desired frequency:
➥ Set other data, such as repeater
information, if required.
➂ Push [(MR)MW] for 1 sec.
• “ X” and the previously selected
memory channel flash.
➃ Push [MULTI(↔)] (or rotate [DIAL])
to select the desired memory channel.
• Call channels and scan edge
channels, as well as regular channels, can be programmed in this
way.
•Only the decimal point appears
for memories not yet programmed.
• If you want to confirm the VFO frequency, push [MR] momentarily—the VFO frequency briefly appears.
➄ Push [(MR)MW] for 1 sec. to program.
• “X” and the memory channel number stop flashing.
• VFO mode is selected.
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MEMORY/CALL PROGRAMMING
■ Memory editing
Memory (call) channel contents can be moved to VFO or to
another memory.
D Transferring a memory (call) channel’s
contents
➀ Select the memory (call) channel to
be transferred:
➥ Push [MR] ([CALL)]) to select
memory (call) mode.
➥ Push [MULTI(↔)] (or rotate
[DIAL]) to select the memory
(call) channel.
➁ Push [(MR)MW] for 1 sec.
•“VF” appears and flashes with “X”
and the previously selected VFO frequency appears..
To transfer the contents to VFO:
➂ Push [(MR)MW] for 1 sec.
D Clearing a memory
➀ Push [MR] to select memory mode.
➁ Push [MULTI(↔)] (or rotate [DIAL]) to select a channel to
be cleared.
➂ Push [VFO] to select VFO mode.
➃ Push [ (MR)MW] for 1 sec. to enter
memory menu mode.
• “X” and a memory channel number
flash.
➄ Push [MULTI(↕)] to display “CLR.”
•Scan edge channels 0A/0B and call
channels cannot be cleared.
➅ Push [ (MR)MW] for 1 sec. to clear
the previously selected memory
channel.
• “X” and a memory channel number
flash and the previously stored information is erased.
➆ Push [VFO] to select return to VFO
mode.
•The contents are transferred and VFO mode is selected.
To transfer the contents to another memory (call) channel:
➂ Push [MULTI(↔)] (or rotate [DIAL]) to select the memory
☞ NOTE: Be careful—the contents of cleared memories cannot be recalled.
(call) channel to be transferred to.
➃ Push [(MR)MW] for 1 sec.
•The contents are transferred and memory (call) mode is selected.
19
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MEMORY/CALL PROGRAMMING
■ Memory names
Memory channels can be programmed with names of up to
six characters.
mode.
• Push [(MR)MW] for 1 sec. to erase a channel’s name and return
to VFO mode.
•When in memory mode push [MR] to toggle between memory
name indication and frequency indication.
➀ Push [VFO] to select VFO mode (or select a memory channel).
➁ Push [(MR)MW] for 1 sec.
• “ X” and the previously selected
memory channel number flash.
➂ Push [MULTI(↔)] (or rotate [DIAL])
to select the desired memory channel.
➃ Push [MULTI(↕)] so that “NAME”
appears.
•Not valid for call channels.
➄ Push [MULTI] to enter name editing
mode.
•The first character of the name flashes.
➅ Rotate [DIAL] (or push [MULTI(↕)]
20
to select a character; then, push
[MULTI(↔)] to advance to the next
character.
➆ Repeat step ➅ until the desired
name appears.
➇ Push [MULTI] to program the name
and return to the “NAME” display;
then push [VFO] to return to VFO
☞ NOTE: To clear a memory name (or remove one or more
characters from a name) without clearing the rest of the
memory channel contents, follow steps ➀ to ➇ at left and
insert an underscore “_” in place of other characters in
steps ➅ and ➆.
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DTMF MEMORY
■ Programming a DTMF code
■ Transmitting a DTMF code
The transceiver has 9 DTMF memory channels (D1 to D9) for
storage of often-used DTMF codes of up to 16 characters.
➀ Push [ (MR)MW] for 1 sec. to enter memory write mode;
➀ Push [ (MR)MW] for 1 sec. to enter
memory write mode; then push
[MULTI(↕)] to enter DTMF memory
mode.
•One of “D1” to “D9” appears and
flashes.
D Using a DTMF memory channel
then push [MULTI(↕)] to enter DTMF memory mode
•One of “D1” to “D9” appears.
➁ Rotate [DIAL] (or push [MULTI(↔)]) to select the desired
channel.
➂ While pushing [PTT], push [SQL] to transmit the selected
DTMF channel’s contents.
➁ Rotate [DIAL] (or push [MULTI(↔)])
D Manual DTMF code transmission
to select the desired channel.
➂ Push [MULTI] to enter DTMF programming mode.
➀ While pushing [PTT], push digit keys to transmit a DTMF
•The first character of the DTMF code
flashes.
➃ Push digit keys (or rotate [DIAL] or
push [MULTI(↕)]) to enter the desired DTMF character; then push
[MULTI(↔)] to advance to the next
character.
•Amaximum of 16 characters can be input.
•Pushing [MULTI(↕)] can also be used to enter DTMF characters.
•When pushing [SQL], the programmed contents can be monitored.
➄ Push [MULTI] to input the digits; then push [VFO] to exit
DTMF programming mode.
code manually.
➁ Release [PTT] to return to receive.
D DTMF transmit speed
USING INITIAL SET MODE
When slow DTMF transmission speeds are required (such as
for some repeaters) the transceiver’s rate of DTMF transmission can be adjusted.
➀ While pushing [MULTI], push [PWR] to turn power on and
enter initial set mode.
➁ Push [MULTI(↕)] one or more times
until “DT” appears.
➂ Rotate [DIAL] (or push [MULTI(↔)])
to select the a transmit speed.
•100 (default), 200, 300 and 500 msec. are available.
➃ Push [VFO] to exit initial set mode.
21
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SCAN FUNCTIONS
■ Scan types
FULL SCAN (p. 23)
MEMORY SCAN (p. 23
Repeatedly scans all frequencies over a selected
band.
PROGRAMMED SCAN (p. 23) Repeatedly scans be-
Repeatedly scans all programmed memory channels.
MEMORY SKIP SCAN (p. 23) Repeatedly scans all
☞ NOTE: Push [MULTI(↔)] during full/programmed scan to
change the band being scanned or to select a different pair
of scan edges.
22
tween two user-programmed frequencies.
Used for checking for frequencies within a specified range such as
repeater output frequencies.
memories, except those
set as skip channels.
Push [MULTI(↔)] during memory (skip) scan to change the
memory channel groups: 1.2 GHz, VHF, UHF, 50 MHz, air
band or WFM programmed memories; or, all programmed
memories.
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SCAN FUNCTIONS
■ Full/programmed scan
■ Memory (skip) scan
➀ Push [VFO] to select VFO mode, if necessary.
➁ Push [MULTI(↔)] for 1 sec. to start the scan; after that,
➀ Push [MR] to select memory mode, if necessary.
➁ Push [MULTI(↔)] for 1 sec. to start the scan; after that,
each push of [MULTI(↔)] selects a different scan range.
each push of [MULTI(↔)] selects a different scan group.
•To change the scan direction, rotate [DIAL].
•To change the scan direction, rotate [DIAL].
➥ The following scan ranges are selectable:
➥ The following memory groups are selectable:
•“ALL50” for full scan on the 50 MHz band.
•“ALL144” for full scan on the 144 MHz band.
• “ALL 430” or “ALL 440” for full scan on the 430(440) MHz
band.
•“ALL WFM” for full scan on the WFM (FM broadcast) band.
•“ALL 118” for full scan on the air band.
•“ALL1200” for full scan on the 1.2 GHz band.
•“PROG 0” to “PROG 9” for one of the programmed scans.
➂ To stop the scan, push [VFO].
☞ NOTE: For programmed scan, scan edges must be programmed in advance (0A/0B are programmed by default).
Program scan edges in the same manner as regular memory channels (p. 18).
If the same frequencies are programmed into a pair of scan
edges, programmed scan does not proceed.
•“SELALL” scans all programmed memory channels.
•“SEL50” scans programmed memories in the 50 MHz band.
• “SEL 144” scans programmed memories in the 144 MHz
band.
• “SEL430” or “SEL440” scans programmed memories in the
430(440) MHz band.
•“SELWFM” scans all programmed WFM channels.
•“SEL118” scans all programmed air band channels.
• “SEL 1200” scans programmed memories in the 1.2 GHz
band.
➂ To stop the scan, push [VFO].
☞ NOTE: For memory skip scan, program memory channels
you don’t want to search, as “skip” channels (p. 24). Scan
proceeds as above except that any channels specified as
skip channels are not searched.
23
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SCAN FUNCTIONS
■ Skip channel setting
Memory channels can be set to be skipped during memory
scan. This is useful to speedup the memory scan interval.
➀ Push [MR] to select memory mode.
➁ Push [(MR)MW] for 1 sec. to enter memory write mode.
➂ Rotate [DIAL] (or push [MULTI(↔)]) to select a memory
■ Scan resume
condition
USING
SET MODE
The resume condition can be selected as a pause or timer
scan. This setting is common for all scans.
channel.
➃ Push [MULTI(↕)] twice times to select “SKIP.”
➄ Push [MULTI(↔)] (or rotate [DIAL])
When receiving a signal, pause
scan pauses until the signal disappears; timer scan pauses for
10 sec.
to toggle the skip setting for the selected channel ON/OFF.
•“SKIP” appears when the channel is
set as a skip channel.
➅ Push [VFO] to program the setting
and exit memory write mode.
➀ Push [MULTI] for 1 sec. to enter set
mode.
☞ NOTE: Scan edge channels, 0A to 9B, cannot be set to
➁ Push [MULTI(↕)] one or more times
show “SKIP” settings, however, they will be skipped during scan.
➂ Push [MULTI(↔)] (or rotate [DIAL])
until “SC” appears.
to select the desired scan resume
condition.
• “T-10”: scan pauses for 10 sec. on a
received signal.
•“P-02”: scan pauses on a received signal until it disappears.
➃ Push [VFO] to exit set mode.
24
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SUBAUDIBLE TONE OPERATION
■ Tone squelch
D Setting subaudible tones for USING SET MODE
tone squelch operation (CTCSS* tones)
The tone squelch opens only when receiving a signal containing a matching subaudible tone. You can silently wait for
calls from group members using the same tone.
Separate tone frequencies can be set for tone squelch operation than for repeater operation (the same range of tones is
available—see below).
➀ Set the operating frequency.
➁ Set the desired subaudible tone in set mode (see right).
➂ Push [MULTI] to enter subaudible tone mode.
➀ Select VFO or a memory channel.
➁ Push [MULTI] for 1 sec. to enter set
•“T” appears; if “D” appears, push [MULTI(↕)] to select “T.”
➃ Push [MULTI(↔)] (or rotate [DIAL]) one or more times until
“TSQL” appears; then push [VFO] to exit set mode.
➄ When the received signal includes a matching tone,
squelch opens and the signal can be heard.
•When the received signal’s tone does not match, tone squelch
does not open, however, the S-indicator shows signal strength.
•To open the squelch manually, push and hold [SQL].
➅ Operate the transceiver in the normal way.
➆ To cancel the tone squelch, repeat steps ➂ and ➃ so that
no tone indicator appears.
☞ NOTE: Some tone frequencies may receive interference
from adjacent tone frequencies.
mode.
➂ Push [MULTI(↕)] one or more times
until “CT” appears.
[DIAL]
(or
push
[MULTI(↔)]) to select the a subaudible tone.
➄ Push [VFO] to program the selected tone and exit set mode.
➃ Rotate
Available subaudible tone frequencies
67.0
69.3
71.9
74.4
79.7
82.5
85.4
88.5
94.8
97.4
100.0
103.5
110.9
114.8
118.8
123.0
131.8
136.5
141.3
146.2
156.7
159.8
162.2
165.5
171.3
173.8
177.3
179.9
(unit: Hz)
186.2
189.9
192.8
196.6
203.5
206.5
210.7
218.1
229.1
233.6
241.8
250.3
✔ CONVENIENT
Store subaudible tone frequencies and tone squelch on/off
settings in memories (call) for easy recall.
*CTCSS stands for continuous tone coded squelch system.
25
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SUBAUDIBLE TONE OPERATION
■ Tone scan
■ Pocket beep operation
The transceiver can detect the subaudible tone frequency in a
received signal. By monitoring a signal, such as that being
transmitted on a repeater input frequency, you can determine
the tone frequency required to access the repeater.
This function uses subaudible tones for calling and can be
used as a “common pager” to inform you that someone has
called you while you were away from the transceiver.
➀ Set the desired frequency or memory channel to be
➀ Set the operating frequency.
➁ Set the desired subaudible tone (same as that used for
checked for a tone frequency.
➁ Push [(RIT)TSCAN)] for 1 sec. to start the tone scan.
•Rotate [DIAL] to change the scan direction.
➂ When the tone frequency is decoded, the set mode contents are programmed with the tone frequency.
•“TSQL” flashes: the matched tone is stored as a CTCSS tone;
“T” flashes: the matched tone is stored as a repeater tone.
•When in memory mode, the decoded tone frequency is stored
temporarily—changing memory channels or selecting VFO mode
erases the matched tone.
•“CT” appears during tone scan when the tone squelch is activated; “rT” appears when the tone squelch is not activated.
•Subaudible tone frequencies flash as they are scanned.
D Waiting for a call from a specific station
tone squelch operation, “CT”) in set mode.
•See previous page for programming.
➂ Push [MULTI] to enter subaudible tone mode.
•“T” appears; if “D” appears, push [MULTI( ↕)] to select “T.”
➃ Push [MULTI(↔)] (or rotate [DIAL]) one or more times until
“TSQLS” appears; then push [VFO] to exit set mode.
➄ When a signal with a matched tone is received, the transceiver emits beep tones for 30 sec. and flashes “S.”
➅ Push [PTT] to answer or push [VFO] to stop the beeps and
flashing.
•Tone squelch is automatically selected.
D Calling a waiting station using pocket beep
A subaudible tone matched with the station’s tone frequency
is necessary. Use the tone squelch on the previous page or
subaudible tone encoder (p. 15).
➃ Push [TSCAN)] (or [PTT] or [VFO]) to stop the scan.
26
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OTHER FUNCTIONS
☞ NOTE: VFO mode cannot be se-
■ Help function
When in set mode or initial set mode and no operation is performed for 5 sec., the name of the selected item scrolls
across the function display for convenience.
■ Initial set mode
AT POWER
ON
Initial set mode is accessed at power on and allows you to
set seldom-changed settings. In this way you can “customize”
transceiver operations to suit your preferences.
➀ While pushing [MULTI], push [PWR] to turn power on.
•The transceiver enters initial set mode and an initial set mode
item is displayed.
➁ Push [MULTI(↕)] to select the desired display as described
on the following pages.
➂ Push [MULTI(↔)](or rotate [DIAL]) to select the desired
condition.
➃ Push [VFO] (or [PTT]) to exit initial set mode for regular operation.
D Optional HM-75A functions
Microphone simple mode is used to
change the function assignments for
switches on the optional HM-75A REMOTE CONTROLMICROPHONE as at right.
10
lected via the microphone when
SIMPLE mode is selected.
SWITCH
NORMAL 1/NORMAL 2
NORMAL1:
BAND
Selects a band.
No function in memory mode.
NORMAL2:
MONITOR
Toggles squelch between
open and closed.
VFO/MEMORY
Toggles VFO and memory
mode.
Change the frequency or
memory channel when
pushed.
Start previously selected scan
when pushed and held.
•Normal 2 (while squelch is
open):
Adjust volume.
SIMPLE
MONITOR
Toggles squelch between open and
closed.
CALL
Selects the call
M00
Selects memory
M01
Selects memory
☞ NOTE: During transmit, pushing [A] transmits a 1750 Hz
tone for Europe, France and Italy versions.
27
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Page 28 (1,1)
OTHER FUNCTIONS
D Auto power OFF
D Beep tones ON/OFF
This item allows you to set a time at
which the transceiver will automatically turn off. The power off time can
be set to 20, 40, 60 min. or turned
OFF (default).
Confirmation beep tones normally
sound when you push a key or switch.
These can be turned ON (default) or
OFF as you prefer.
D Auto repeater (see p. 17)
D Display backlighting
When set to AUTO (default), display
backlighting automatically turns on
when a key is pushed; when set to
OFF, display backlighting cannot be
turned ON; when set to ON, display
backlighting remains ON continuously.
28
D Power saver
This item sets the power saver duty
cycle—the ratio of receive circuit on to
receive circuit off while standing by.
The duty cycle can be set to automatic (default) or OFF. Setting to automatic conserves battery power.
AUTO
Selects “1:4” duty ratio when receiving no signal
for 5 sec., then “1:8” 60 sec. after that.
OFF
No power saver function.
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OTHER FUNCTIONS
D Voltage display
This item sets the voltage display ON
(default) or OFF. When set to ON,
battery voltage is briefly displayed
after turning power on.
■ Resetting the CPU
AT
10
POWER ON
Reset the CPU before operating the transceiver for the first
time, or when the internal CPU malfunctions.
➥ While pushing [SQL] + [VFO] +
[MR], push [PWR] to turn power on
and reset the transceiver’s CPU.
D DTMF speed (see p. 21)
•“CLEAR” appears briefly to indicate
the CPU has been reset.
uCAUTION: Resetting the CPU returns all programmed
contents to their default settings.
D Function display contrast
This item sets the function display
contrast to one of two levels—“1” is
low contrast and “2” (default) is high
contrast.
29
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Page 30 (1,1)
OTHER FUNCTIONS
■ Cloning
AT
POWER ON
Cloning allows you to quickly and easily transfer the programmed contents from one transceiver to another transceiver; or, data from a PC to a transceiver using the optional
CS-T81 CLONING SOFTWARE.
D Transceiver-to-transceiver cloning
➃ When cloning is finished, turn power off, then on again to
return to normal operation.
D Cloning using a PC
CLONING CABLE with adapter plugs
to the [SP] jack of the master and slave transceivers.
Data can be cloned to and from a PC (IBM compatible) using
the optional CS-T81 CLONING SOFTWARE and the optional
OPC-478 CLONING CABLE.
• The master transceiver is used to send data to the slave transceiver.
D Cloning error
➀ Connect the OPC-474
➁ While pushing [MR], push [PWR]
☞ NOTE:DO NOT push the [PTT] on
to enter cloning mode (master
transceiver only—power on only for
slave transceiver).
the slave transceiver during
cloning. This will cause a cloning
error.
• “CLONE” appears and the transceivers enter the clone standby
condition.
➂ Push [PTT] on the master transceiver.
•“CLOUT” appears in the master transceiver’s display and the S/RF indicator shows that data is being transferred to the slave transceiver.
• “CL IN” appears automatically in the
slave transceiver’s display and the
S/RF indicator shows that data is
being received from the master trans-
30
ceiver.
• When cloning is finished, “CLONE” appears in the master transceiver’s display and “CLEND” appears in the slave transceiver’s
display.
When the display at right appears, a cloning error has occurred.
In such a case, memory contents return to their default settings and both transceivers automatically enter VFO mode.
Cloning must then be repeated.
IC-T81A/E Manual
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Page 31 (1,1)
TROUBLESHOOTING
11
If your transceiver seems to be malfunctioning, please check
the following points before sending it to a service center.
PROBLEM
No power comes on.
POSSIBLE CAUSE
•The battery is exhausted.
(A slight current flows in the circuits even when the
power is off.)
SOLUTION
REF.
•Charge the battery pack or place new dry cell bat- pgs. 7,
teries in the battery case.
(Remove the battery pack if you will not be using the transceiver for a long time.)
Transmitting is impossible. •The battery is exhausted.
•Charge the batteries or place new dry cells in the pgs. 7,
battery case.
Frequency cannot be set.
•Memory (call) mode is selected.
•The lock function is activated.
•Push [VFO] to select VFO mode.
•Push [ (H/L) LOCK)] for 1 sec.
Scan does not function.
• The same frequencies are programmed into XA •Program different frequencies.
p. 18
and XB (a pair of scan edges).
• Only CH00 is programmed; or, all other memory •Program additional memories; or, cancel skip set- pgs.
channels are set as skip channels.
tings for one or more channels.
18, 24
[Y] or [Z] keys do not
function when using the
optional HM-75A.
•Memory channels 00 and/or 01 are not pro- •Program the memory channels or set to microphone pgs.
grammed and simple mode is selected.
normal 1 or normal 2.
18, 27
Squelch does not open for
received signals.
•Tone squelch is activated.
•Turn off the tone squelch.
p. 25
Some memory channels
cannot be selected.
•Some memories have been cleared.
•Program the cleared memories.
p. 19
RIT/VXO offset cannot be
adjusted.
• RIT/VXOfunction has not been activated or the • Activate the RIT/VXOfunction in set mode or push p. 13
1200 MHz band is not selected.
[MULTI(↔)] to select the 1200 MHz band.
Cannot transmit on the 50
MHz band.
•AM mode has been set for the 50 MHz band.
•Turn AM mode off in set mode.
p. 9
p. 11
p. 14
31
IC-T81A/E Manual
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12
Page 32 (1,1)
SPECIFICATIONS
GENERAL
•Frequency coverage
Version
50 MHz
Europe
UK
Italy
50–54
50–52
50–52
(Rx only*)
50–52
Asia
50–54
USA
Australia 50–54
Taiwan
N/A
144 MHz
430 MHz
(Unit: MHz)
1.2 GHz
WFM*4
Rx: 118–174*1
Tx: 144–148
Rx: 400–470*2
Tx: 430–450*2
1240–1300
76–107.995
144–146
430–440
1240–1300
88–107.995
136–174*1
Rx: 118–174*1
Tx: 136–174*1
144–148
144–146
400–470*3
1240–1300
88–107.995
430–440
1240–1300
76–107.995
430–440
430–440
1240–1300
1260–1265
88–107.995
76–107.995
:Variable reactance modulation
:High 5 W typ. (except 1200 MHz)
1 W (1200 MHz)
Low 0.5 W typ. (0.1 W typ. for 1200
MHz)
*Some versions may be able to transmit.
•Operating mode
•No. of memory channels
:FM(F3E), WFM(Rx), AM(Rx)
:124 (100 regular, 20 program scan
edges and 4 call)
•Tuning steps
:5*, 10, 12.5, 15*, 20, 25, 30, 50 and
100 kHz
*Not available for 1200 MHz band.
•Frequency stability
:±3 ppm (–10°C to 60°C; 14°F to 140°F)
•Power supply requirements (negative ground):
4.5 to 16 V DC or specified battery
pack/case
•Current drain( at 13.5 V DC):
Rx Power saved
40 mA(typ.)
standby
80 mA(typ.; 90 mA: 1200 MHz)
rated audio
220 mA(typ.)
Tx max. power
1.4 A(0.8 Atyp.: 1200 MHz)
•Antenna connector
:SMA(50 Ω)
•Usable temperature range
:–10°C to +60°C; +14°F to +140°F
•Dimensions
:58(W)×106(H)×28.5(D) mm;
29⁄32(W)×43⁄16(H)×11⁄ 8(D) in
•Weight (approx.)
:300 g; 10.6 oz (w/ant. & BP-197)
280 g; 9.9 oz (w/ant. & BP-199)
310 g; 10.9 oz (w/ant. & BP-200)
32
TRANSMITTER
•Modulation system
•Output power(at 13.5 V DC)
•Spurious emissions
•Max. frequency deviation
•Ext. microphone connector
RECEIVER
•Receive system
:Less than –60 dB
(Less than –40 dB for 1200 MHz)
:±5 kHz
: 3-conductor 2.5(d) mm (1⁄8″)/ 2 kΩ
:Double conversion
superheterodyne
•Intermediate frequencies
:1st
69.45 MHz (FM)
13.35 MHz (WFM)
2nd
450 kHz
•Sensitivity (except spurious points) :
FM
50 MHz
Less than 0.18 µV
(at 12 dB SINAD)
144 MHz
Less than 0.18 µV
430(440) MHz
Less than 0.18 µV
1200 MHz
Less than 0.25 µV
WFM
91.5 MHz
Less than 1.99 µV
(at 12 dB SINAD; 1 kHz/52.5 kHz deviation)
•Squelch sensitivity
:0.18 µV (FM)
0.25 µV (1200 MHz)
5.6 µV (WFM)
•Spurious and image rejection ration:
50, 144 MHz bands
Less than –60 dB
430(440) MHz band
Less than –50 dB
1200 MHz band
Less than –50 dB
(–50 dB typ. for half IF; except 2nd image, 50 MHz band IF and WFM)
•Audio output power (at 25°C)
:250 mW typ.at 10% distortion with an
8 Ω load
IC-T81A/E Manual
98.12.16 4:40 PM
Page 33 (1,1)
OPTIONS
D Battery packs
D Speaker-microphones
BATTERY VOLTAGE CAPACITY OUTPUT OPERATING
PACK
POWER
PERIOD*
BP-197 Battery case for R6(AA)
0.8 W
10/14 hr
× 3 alkaline or Ni-Cd cells
BP-198 4.8 V
700 mAh
1.2 W
6/8.5 hr
BP-199 6.0 V
700 mAh
2.0 W
4/8 hr
BP-200 9.6 V
680 mAh
4.5 W
4/7 hr
*Operating periods are calculated under the following conditions:
Tx:Rx:standby=1:1 :8;
Longer operating times are when operating on the 1200 MHz band.
HM-46
HM-54
HM-75A
HS-85
D Chargers and cables
BC-110A/C/D/V WALLCHARGER
Regularly charge battery packs attached to the transceiver in 15 hrs.
BC-119 DESKTOP CHARGER+
AD-88 TERMINALPC BOARD FOR CHARGER +
AD-87 BATTERY PACK ADAPTER +
Rapidly charge battery packs in 1 to 1.5 hrs. depending on the battery
pack. An AC adapter is packed with the BC-119 (except for the UK
version). The AD-87 must be used with the BC-119 for charging the
battery pack. The CP-17L or OPC-515L can be used instead of the
supplied AC adapter.
CP-12L CIGARETTE LIGHTER CABLE WITH NOISE FILTER
For operation and charging via a 12 V cigarette lighter socket.
OPC-254L DC POWER CABLE
For operation and charging via an external power supply.
13
•PTTswitch
•VOX
•One-touch PTTfor
hands-free operation
Remote control
capability (see p. 27)
D Others
CS-T81 CLONING SOFTWARE
Allows you to clone the memory contents of an IC-T81 transceiver
between transceivers or to a PC for editing.
LC-148 CARRYING CASE
SP-13 EARPHONE
Provides clear receive audio in noisy environments.
33
IC-T81A/E Manual
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14
34
Page 34 (1,1)
MODE ARRANGEMENT
IC-T81A/E Manual
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Page 35 (1,1)
MODE ARRANGEMENT
14
35
IC-T81A/E Manual
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Page 36 (1,1)
Count on us!
A-5518D-1EX
Printed in Japan
© 1998 Icom Inc.
6-9-16 Kamihigashi, Hirano-ku, Osaka 547-0002 Japan

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