Kenwood TH-235A User manual

GOOMN=>A>
144 MHz FM TRANSCEIVER
TH-235A
144 MHz FM TRANSCEIVER
H-235E
INSTRUCTION
MANUAL
KENWOOD CORPORATION

THANK YOU!
We are grateful you decided to purchase this KENWOOD
FM transceiver. This series of handhelds were developed
to satisfy the requirement for a compact rig that’s simple to
operate yet contains numerous sophisticated features.
KENWOOD believes that the compact size coupled with
the reasonable cost will guarantee your satisfaction with
this product.
MODELS COVERED BY THIS MANUAL
The models listed below are covered by this manual.
TH-235A: 144 MHz FM transceiver
({U.S.A./ Canada/ General market)
TH-235E: 144 MHz FM transceiver
(Europe)
FEATURES
e Contains 60 memory channels programmable with
desired frequencies and related data (Tone, CTCSS,
DTSS, etc.)
¢ Equipped with a keypad that includes numeric keys, so
frequencies or memory channels are selectable via
keypad direct entry.
e Innovative Menu Set-up method combines sophisticated
features with simple operation; only frequently-used
keys are placed on the front and side panels.
¢ Dual Tone Squeich System (DTSS) allows selective
calling of specific stations.
e Programmable with a RX tone and TX tone separately.
This enhances the optional Continuous Tone Coded
Squelch System (CTCSS).

NOTICES TO THE USER
ATTENTION (U.S.A. Only)
Nickel-Cadmium batteries must be replaced or
disposed of property.
State laws may vary regarding the handling and
disposal of Nickel-Cadmium batteries.
Please contact your authorized KENWOOD dealer for
more information.
One or more of the following statements may be
applicable:
FCC WARNING
This equipment generates or uses radio frequency energy. Changes or
modifications to this equipment may cause harmtul interference unless
the modifications are expressly approved in the instruction manual. The
user could lose the authority to operate this equipment if an
unauthorized change or modification is made.
INFORMATION TO THE DIGITAL DEVICE USER REQUIRED BY
THE FCC
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation.
This equipment generates, uses and can generate radio frequency
energy and, if not installed and used in accordance with the instructions,
may cause harmtul interference to radio communications. However,
there is no guarantee that the interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turing the
equipment off and on, the user is encouraged to try to correct the
interference by ane or more of the following measures:
» Reorient or relocate the receiving antenna.
« Increase the separation between the equipment and receiver.
e Connect the equipment to an outlet on a circuit different from that to
which the receiver is connected.
Consult the dealer for technical assistance.
PRECAUTIONS :
Piease observe the following precautions to prevent fire,
personal injury, and transceiver damage:
Do not transmit with high output power for extended
periods. The transceiver may overheat.
Do not modify this transceiver unless instructed by
this manual or by KENWOOD documentation.
When using a regulated power supply, connect the
specified DC cable (option) to the DC IN jack on the
transceiver. The supply voltage must be between
7.5 V and 16 V to prevent damaging the transceiver.
When connecting the transceiver to a cigarette lighter
socket in a vehicle, use the specified cigarette lighter
cable (option).
Do not expose the transceiver to iong periods of
direct sunlight nor place the transceiver close to
heating appliances.
Do not place the transceiver in excessively dusty
areas, humid areas, wet areas, nor on unstable
surfaces.
if an abnormal odor or smoke is detected coming
from the transceiver, turn OFF the power immediately
and remove the battery case or the battery pack from
the transceiver. Contact a KENWOOD service
station or your dealer.

CONTENTS
=
SUPPLIED ACCESSORIES 0... ee eeseeeeeseeecreeerenees 1
CONVENTIONS FOLLOWED IN THIS MANUAL ...... 1
Hie BATTERY INFORMATION
BATMERY: PAGK 3. cccecrcra auish aiiaterstetecdavsouasrnieees 2
INSTALLING/REMOVING ALKALINE BATTERIES... 3
BATTERY OPERATING TIME ......cccceccscsseseesssscessreeees 4
YOUR FIRST CONTACT (QSO)
| CHAPTER) | GETTING ACQUAINTED aun
ORIENTATION: a. aietiarivi ede ndaidhaedonsiiterniees 6
BASIC TRANSCEIVER MODES ............:ceseceeeeseeeees 6
DISPLAY shcin nine bani ainda Merlo ebfieesistint 7
tacos OPERATING BASICS
SWITCHING POWER ON/OFF ..........::::ccccccseesseeeseees 8
ADJUSTING VOLUME 0... eee eeeeetesssessesseesseeseesnenanes 8
ADJUSTING SQUELCH 00.0... eeecececeeeeneeeeeeestseeeeseees 8
SELECTING FREQUENCIES oo... eeeceecssteeseceeeeees 9
TRANSMITTING ou... ceceseneeeeeeesaeeeeteereaeereeeeeaeees 9
Selecting Transmit PoWe?r «0... eesseeceessesteesseeees 9
INSTALLING/REMOVING THE NiCd
CTTMMON
MENUSerUP
MENU ACCESS 1... eee ccesesseeeeeneeeetaneneesesseesreanens 10
| CHAPTER © | GE OPERATING THROUGH REPEATERS
REPEATER ACCESS ooo. .eececcccccceeecseentcseeesseesnneenens 11
Selecting Offset Direction ............ccccccseeeeceeees 12
Selecting Offset Frequency ..........cccecseeeeeesees 12
Activating Tone Function ............:ceeescssessesessesseees 13
Selecting a Tone Frequency ............ccccccceeeerees 13
Automatic Repeater Offset
(U.S.A/ Canada/ Europe Only) .......ceccceeeceeees 14
REVERSE FUNCTION ........cccccessssscsscsseeeeesseceeeseeses 15
LaLa
MK@O
MEMORY
CHANNELS
bee]
SIMPLEX OR SPLIT MEMORY CHANNEL’? ........... 16
STORING DATA IN SIMPLEX CHANNELS ............. 17
STORING DATA IN SPLIT CHANNELS..............000 17
CONTINUOUSLY STORING IN SIMPLEX OR
SPLIT CHANNELS. ....0.....cccecececcccececsecsessseeesesennsevenns 18
RECALLING MEMORY CHANNELS... 19
CLEARING MEMORY CHANNELS ........0.-cceeeeuee 19
MEMORY = VFO TRANSFERS ..........cccccerccsceeeseee 19
CLONE Sr cesienagas eadineven raed tees Tae 20
CHANNEL DISPLAY FUNCTION ..........00cece eee 21
INITIALIZING MEMORY ........:c:cccsccseeeeeesesesseeseeeees 21
Partial Reset (VFO)... cccsscscsseescscsseessrsneessess 21
Full Reset (M@MOry) ........:cscscesessesssesseesterenseere 21

CHAPTER © yee
SCAN
RESUME
METHODS
..........cccseeescesseeeeneees
22
Selecting Scan Resume Method ...........:: eee 23
VEO“SGCAN
Sosieitevectaneageaie
dedetendatas
ened
gaaeaedsteecelenerss
23
MEMORY
SCAN
.......:::cecceecseteeieeereesesesispereaseeseeeneees
24
Locking Out Memory Channels ..........cccesseseee 24
CHAPTER ©)
CONTINUOUS TONE CODED:SQUELCH SYSTEM (CTCSS)
USING
CT
CSS:
iscscdevsecieedinganit
rastolieateh
itivasesvesunnine
ete
25
ICHAPTER (© | (ms DUAL TONE SQUELCH SYSTEM (DTSS):
STORING DTSS CODES Wu... ceecceeeceneeeneeeeeenees 27
USING: DISS 145 nceeaiesiedii ea dan iain die 27
DTSS and Repeaters ........ ec cccsseeeeeeeeeeeeneeeeeee 28
CHAPTER i)
DUAL TONE MULTI-FREQUENCY (DTMF) FUNCTIONS
MAKING DTMF CALLS .......0..ceeceeeeeeeeeeeeeeeenteeenees 29
DTMPF Tone TX Hold oo. ccecssseceeesereceeeeseeeeeneee 29
Autopatch (U.S.A. and Canada) ........... eee 29
@ STORING DTMF NUMBERS FOR
AUTOMATIC DIALER ........cceecceeeeeseeseeeeeeeeenreneres 30
CONFIRMING STORED DTMF NUMBERS ............ 30
TRANSMITTING STORED DTMF NUMBERS ........ 31
TRANSMITTING SINGLE-FREQUENCY TONES ... 31
COOGEE AUXILIARY FUNCTIONS mo
TIME-OUT TIMER (TOT) .0.... cece cece cseteteeeeeeeteeeeeeee
TX
INHIBIT
.....ecceeeccceceeecectesesesaseeeeeneseaeeeeneeeeseesenenes
32
>
Cll
@
BUSY
CHANNEL
LOCKOUT
........
eect
eeeeees
32
TRANSCEIVER
LOCK
......scsscscssesssetessssterssseesesnsesenes
32
AUTOMATIC
POWER
OFF
(APO)
.......--secseseereeeteee
33
BATTERY
SAVER
wcceecccecete
scene
sceticceitesvpoeseeeeereenenie
33
LAMP
FUNCTION
.
0.0...
eeeeeeesceseseeesceeensereeeeenneeneee
33
Cl
BEEP
ON/OFF
......ccccccccssseeseseeeeeesresnssetasenecseeeeeeseenes
33
KEYPAD
DIRECT
ENTRY
.........::::ccccsssseeesseeesesseerees
34
Frequency Entry ..........:ccceceecsseseecneseesnersetseeaees 34
Memory Channel Number Enttty ...........:-- eee 34
CHANGING
FREQUENCY
STEP
SIZE
.........-::00
35
GH
EMER
MICROPHONE
CONTROL
bet]
GAG
OD
MAINTENANCE
eo
GENERAL
INFORMATION
....0...
cece
eeeeccneeteeeereees
37
SERVICE ccein eesti etnies hk dodg ep bea niece eaten 37
SERVICE
NOTE
.....cescesssseseseccssesssteseensenseseeeceeansaneas
37
CLEANING.
..........cceeecceeeeeeeesseseesneoaseneenseneenenrerenenages
37
CHARGING
THE
NiCd
BATTERY
PACK................5
38
Using
the
Wall
Charger
........ccccccsseesseneeseeeeeeees
38
Using the Slot-type Charger ...........cceeeie 39

TROUBLESHOOTING uo... ceseccecsceereereeeeeeeeeeenseneeee 40
Tait imo. OPTIONAL ACCESSORIES: :
CHAPTER
:
ee
EQUIPMENT
INSTALLATION
AND
CONNECTION
ee
i
INSTALLING THE TSU-8 UNIT oo... eet eee eeeees 43
CONNECTING AN EXTERNAL POWER SOURCE. 45
Using a Regulated Power Supply .............0 45
Using a Cigarette Lighter Socket .............. ee 45
CONNECTING EQUIPMENT FOR REMOTE
CONTROL aieetecik ter cugeedicieiesiin ttavsieeiaiciaseen 46
CONNECTING OTHER EXTERNAL EQUIPMENT . 46
INSTALLING/REMOVING THE BELT HOOK........... 46
SPECIFICATIONS |
INDEX

SUPPLIED ACCESSORIES
Antenna
‘art Number. | 0
ee
NiCd battery pack
PB-36 (7.2 V, 950 mAh)’
PB-37 (12 V, 950 mAh)?
W09-0890-XX
W09-0889-XX
Battery case (BT-10)?
A02-2042-XX
Battery charger
U.S.A/ Canada
Europe (United Kingdom)
Europe (some)
Europe (some)
General (some)
General (some)
General (some)
W08-0437-XX
W08-0438-XX
W08-0440-XX
W08-0504-XX
W08-0505-XX
W22-0108-XX
W22-01 09-XX |
AC plug adapter?
j_&1 9-0254-XX
Belt hook?
J29-0631-XX
=a/a)/ aaa i ao
Warranty card
U.S.A./ Canada/ Europe only
=
Instruction manual
B62-0750-XX
1 Excluding some General market versions
2 Some General market versions only
3
For
the
method
of
installing
and
removing
the
belt
hook,
refer
to
“INSTALLING/REMOVING THE BELT HOOK” {page 46}.
—
CONVENTIONS
FOLLOWED
IN
THIS
MANUAL
The
writing
conventions
described
below
have
been
followed
to
simplify
instructions
and
avoid
unnecessary
repetition.
ATTENTION:
MOST
PROCEDURES
REQUIRE
THAT
YOU
PRESS
AN
APPROPRIATE
KEY
IN
EACH
STEP
WITHIN
APPROXIMATELY
10
SECONDS,
OR
THE
PREVIOUS
MODE
WILL
BE
RESTORED.
Press [KEY].
Press and release KEY.
Press
[KEY] (1 s).
; Press and hold KEY until the
function begins.
Press
{KEY1], [KEY2].
[Press KEY1 momentarily,
release KEY1, then press
‘KEY2.
Press
[KEY1]+[KEY2].
Press
[KEY]+ POWER ON.
Press and hold KEY1, then
press KEY2.
| With transceiver power OFF,
press and hold KEY, then
press the POWER switch.
Press
[KEY1]+[KEY2]+
POWER ON.
With transceiver power OFF,
press and hold KEY1 and
KEY2, then press the POWER
switch.

BATTERY INFORMATION
INSTALLING/REMOVING
THE
NiCd
BATTERY
PACK
3
To
remove
the
battery
pack,
hold
the
transceiver
as
:
shown,
push
up
on
the
release
switch,
then
slide
the
Note:
Because
the
battery
pack
is
provided
uncharged,
charge
the
battery
pack
back.
battery pack before using it with the transceiver, For the method of
charging the battery pack, refer to “CHARGING THE NiCd BATTERY
PACK” {page 38}.
1. Align the grooves in the battery pack with the
transceiver.
Release
switch

INSTALLING/REMOVING
ALKALINE
BATTERIES
WARNING!
5
DO
NOT
INSTALL
THE
BATTERIES
INA
HAZARDOUS
ENVIRONMENT
WHERE
SPARKS
COULD
CAUSE
AN
EXPLOSION.
NEVER
DISCARD
OLD
BATTERIES
IN
FIRE
BECAUSE
EXTREMELY
HIGH
TEMPERATURES
CAN
CAUSE
BATTERIES
TO
EXPLODE.
Note:
°
It
is
recommended
to
use
high
quality
alkaline
batteries
rather
than
manganese
batteries
to
enjoy
longer
periods
of
battery
life.
Do
not
use
commercially
available
NiCd
batteries.
if
you
will
not
use
the
transceiver
for
a
long
period,
remove
the
batteries
from
the
battery
case.
To
open
the
battery
case,
push
on
the
locking
tab
and
pull
the
two
case
halves
apart.
2
Insert
six
AA
(LR
6)
alkaline
batteries
in
the
battery
case;
two
in
the
upper
half
and
four
in
the
lower
half.
e
Be
careful
with
the
battery
polarities
marked
on
the
bottom
1
of each
case
half.
3
Align
the
two
tabs
on
the
upper
half
with
the
matching
grooves
on
the
lower
half,
and
press
the
two
halves
together
until
the
locking
tab
clicks.

4 Align the grooves in the battery case with the BATTERY OPERATING TIME
transceiver.
The
following
table
shows
the
approximate
battery
life
(hours)
relative
to
the
transmit
output
power.
PB-36 NiCd 9 hr. 11 hr.
PB-37 NiCd 8 hr. 14 hr.
Note: The times shown in the table were measured with the following
repeated cycle: 6 second TX, 6 second RX, and 48 second standby.
5 Slide the battery case until it locks in place. To remove
the battery pack, hold the transceiver as shown, push
up on the release switch, then slide the battery case
back.
Release
switch

YOUR FIRST CONTACT (QSO)
if
you
tend
to
discard
instruction
manuals
oe
CAUTION:
along
with
the
packaging
material
.....please
@
THE
RECOMMENDED
DUTY
CYCLE
IS
don't.
The
6
steps
given
here
will
get
you
on
1
MINUTE
OF
TRANSMISSION
AND
2
]
3 MINUTES OF RECEPTION. LONGER
TRANSMISSIONS OR EXTENDED
OPERATION IN THE HIGH POWER MODE
MAY CAUSE THE BACK OF THE
TRANSCEIVER TO GET HOT. DO NOT
PLACE THE TRANSCEIVER WHERE THE
HEAT SINK (REAR PANEL) MIGHT COME IN
CONTACT WITH PLASTIC OR VINYL
SURFACES.
@ TRANSMITTING WITH THE SUPPLIED
ANTENNA NEAR OTHER ELECTRONIC
EQUIPMENT CAN INTERFERE WITH THAT
EQUIPMENT. ALSO, TRANSMITTING NEAR
A REGULATED POWER SUPPLY, THAT IS
NOT RECOMMENDED BY KENWOOD, MAY
CAUSE THE POWER SUPPLY TO OUTPUT
AN EXTREMELY HIGH VOLTAGE. THIS
VOLTAGE COULD DAMAGE BOTH YOUR
TRANSCEIVER AND ANY OTHER
EQUIPMENT CONNECTED TO THE POWER
SUPPLY.
the
air
right
away.
So,
you
can
enjoy
the
exhilaration
that
comes
with
opening
a
brand
new
transceiver.
F
@ Holding the antenna at its base, push it .
onto the. BNC. connector.and twist until.it
POWER switch
| @ Turn the VOL contro! to approximately
44 o'clock. i dmeaee c
| @ Turn the Tuning contro! to select a
Note: The installed antenna can continuously tum
around the connector.
@
When
you
finish
speaking,
release
the

ORIENTATION
switch
Release
switch
VOL contro!
GETTING ACQUAINTED
BASIC TRANSCEIVER MODES
This section introduces you to the two basic modes that
you will select most frequently.
VFO mode
Press
[VFO]
to
select.
In
this
mode
you
can
change
the
operating
frequency
using
the
Tuning
control.
Memory Recall mode
Press [MR] to select. In this mode you can change
memory
channels,
using
the
Tuning
control,
where
you
stored frequencies and related data. For further
information, refer to “MEMORY CHANNELS” {page 16}.

DISPLAY
’
On
the
display
you
will
see
various
indicators
that
show
what
you
have
selected.
Sometimes
you
may
not
recall
what
those
indicators
mean
or
how
you
can
cancel
the
current
setting.
In
such
a
case,
you
will
find
the
following
table
very
useful.
Displays
the
operating
frequency,
frequency
step
size,
or
tone
frequency.
ne
it
ofl
Displays
the
current
memory
channel
when
in
Memory
Recall
mode.
Second Function
Select mode
Low transmit
power
Transceiver Lock |[F], [B]
DTSS (F], [1]
CTCSS [F), [3]
7 a |
Tone function [A]
Plus offset
direction
Minus offset
direction [#]
Reverse function {4
[F], (#1, [F1, [#]
Memory Channel
Lockout Fl, [9]
Memory channel
containing data
Transmit mode
Release the
PTT switch
a ae F —
Visible while
squelch is open.
1
Appears
only
when
you
have
installed
the
optional
TSU-8
unit.
?
Blinking
“
a”
indicates
that
the
channel
contains
no
data.

OPERATING BASICS
SWITCHING POWER ON/OFF ADJUSTING SQUELCH
Press the POWER switch to turn the transceiver ON or The purpose of the Squelch function is to silence
OFF.
background noise output from the speaker (squelch closed)
when no signals are present. When the squelch level is set
correctly, you will hear sound (squelch opened) only while a
station is actually being received.
1 Press [F], [MONI].
« The current squelch level appears. The default is level 1.
ADJUSTING VOLUME
Press and hold [MONI], then turn the VOL control
clockwise to increase the audio level or counterclockwise to
decrease the audio level. er eee ey Pee :
* If "BUSY’ is visible, you need not press and hold [MONI]. BH eee gee ae Soe tee ay eat uk ales
m e Selecting level 0 allows you to hear weak signals,
however, background noise is always audible.
e Selecting level 2 allows you to hear only strong signals.
Note: To hear a weak signal or background noise, deactivate the
Squeich function by pressing [MONI].
3 Press any key other than [MONI] and [D] to complete
setting.

SELECTING
FREQUENCIES
1
Press
[VFO]
to
select
VFO
mode.
2
Turn
the
Tuning
control
clockwise
to
increase
the
frequency
or
counterclockwise
to
decrease
the
frequency.
*
Tochange
frequencies
in
steps
of
1
MHz,
press
[B]
first.
The
1
MHz
digit
blinks.
Pressing
[B]
again
cancels
this
function.
*
Ifyou
cannot
select
a
particular
frequency,
the
frequency
step
size
needs
to
be
changed.
See
“CHANGING
FREQUENCY
STEP
SIZE”
{page
35}.
e
You
can
also
select
frequencies
with
the
numeric
keys.
See
“KEYPAD
DIRECT
ENTRY”
{page
34}.
TRANSMITTING
1
When
ready
to
begin
transmitting,
press
and
hold
the
PTT
switch,
and
speak
in
a
normal
tone
of
voice.
e “ON AIR” appears.
e
Speaking
too
close
to
the
microphone,
or
too
loudly,
may
increase
distortion
and
reduce
intelligibility
of
your
signal
at the
receiving
station.
2
When
you
finish
speaking,
release
the
PTT
switch.
m Selecting Transmit Power
Press [C] to toggle high (default) or low power.
« “LOW’ appears when low power is selected.
Note: Selecting iow transmit power is a wise method to reduce
battery consumption if communication is still reliable.

MENU SET-UP
Many
functions
on
this
transceiver
are
selected
or
MENU
CONFIGURATION
configured via a software-controlled Menu instead of
physical controls on the transceiver.
Soot
Battery Saver
MENU
ACCESS
Automatic
Power)
ON/OFF
1
Press
[
*]
to
enter
Menu
mode.
OFF
:
Scan
Resume
|
Time-Operated/
5]
¢
The
last
Menu
No.
used
appears.
Method
Carrier-
Operated
ae
'
shcoutllt
Operated
to
Beep
ON/OFF
ON/OFF
ON
TX
Inhibit
ON/OFF
OFF
Tuning
Control
ON/OFF
3
OFF
Hee
EE
=
Enable
2
Turn
the
Tuning
contro!
to
select
the
desired
Menu
No.
Day
Code
TX
/350
ms/
550
ms
DTMF
Tone
TX
ON/OFF
Hold
Busy
Channel
ON/OFF
Lockout
Time-Out
Timer
|
900/
180/
90/
{900
sec.
3
Press
[F]
to
toggle
the
selection.
SIS
60/
30
sec.
.
ro
4
Press
any
key
other
than
[MONI],
[F],
and
[D]
to
exit
Code
ae
fale
oe
By
ORE
M
:
engimods
Automatic
ON/OFF
ON
Note:
As
required,
turn
the
Tuning
control
or
press
[F]
within
Repeater
Offset’
approximately
10
seconds,
or
the
previous
mode
will
be
restored.
'U.S.A/ Canada/ Europe only
10

OPERATING THROUGH REPEATERS
Compared to simplex communication, you can usually
transmit over much greater distances by using a repeater.
Repeaters are typically located on a mountain top or other
elevated location. Often they operate at higher ERP
(Effective Radiated Power) than a typical station. This
combination of elevation and high ERP allows
communications over considerable distances.
Repeaters are often installed and maintained by radio
clubs, sometimes with the cooperation of local businesses
involved in the communications industry. During
emergencies, repeater networks can be a valuable aid to
officials responsible for coordinating communications in a
community.
“a
TX: 144.73 MHz
TX tone: 88.5 Hz
RX: 145.33 MHz
TX: 144.73 MHz
TX tone: 88.5 Hz
RX: 145.33 MHz
REPEATER ACCESS
Most Amateur Radio voice repeaters use a separate
receive and transmit frequency. You can set a separate
transmit frequency by selecting the offset frequency and
offset direction with respect to the receive frequency.
In addition, some repeaters may require the transceiver to
transmit a tone before the repeater can be used. To
transmit this required tone, activate the Tone function and
select a tone frequency. The required tone frequency
depends on the repeater you are accessing. Consult your
local repeater reference.
Flow Chart for Repeater Access
Select a receive frequency.
Select an offset frequency
Activate the Tone function, if necessary.
Select a receive/ transmit tone frequency,
if necessary.
Press the PTT switch.

m@ Selecting Offset Direction
Select
whether
the
transmit
frequency
will
be
higher
(+)
or
lower
(—)
than
the
receive
frequency.
Press [F], [#].
ee
«
Each
time
you
repeat
this
key
operation,
the
offset
direction
changes
as
shown
below.
The
default
is
“simplex”
(no
offset).
pee + — - 7]
Note:
=
if
the
offset
transmit
frequency
falls
outside
the
allowable
transmit
frequency
range,
transmitting
is
inhibited
until
the
transmit
frequency
is
brought
within
the
band
limits
by
one
of
the
following
methods:
°
Move
the
receive
frequency
further
inside
the
band.
°
Change
the
offset
direction.
¢
While
using
a
split
memory
channel
or
transmitting,
you
cannot
change
the
offset
direction.
m@ Selecting Offset Frequency
Select how much the transmit frequency will be offset
from the receive frequency.
1 Press [F], [0].
« The current offset frequency appears. The default is
600 kHz.
SRR SRE ESBS
2 Turn the Tuning control to select the appropriate
offset frequency.
* The selectable range is from 00.000 MHz to
29,995 MHz, and the current transmit/ receive
frequency step size {page 35} is used.
¢ To change offset frequencies in steps of 1 MHz, press
[B]. Press [B] again to cancel this function.
3 Press any key other than [MONI], [B], and [D] to
complete setting.
Note:
After
changing
the
offset
frequency,
the
new
offset
frequency
will
also
be
used
by
Automatic
Repeater
Offset.

@ Activating Tone Function
Press
[A]
to
toggle
the
Tone
function
ON
or
OFF.
e
‘TT
appeals
nen,
oe
FOREN
eR
is
ON.
TH-235E
only:
{f
you
have
selected
1750
Hz
tone
frequency:
e
You
need
not
switch
the
Tone
function
ON..
Pressing
[A]
after
selecting
1750
Hz
tone
causes
an
error
beep
to
sound.
©
Press
and
hold
the
PTT
switch,
then
press
[F]
to
send
a
1750
Hz
tone.
Release
[F]
to
quit
1750
Hz
transmission.
m@ Selecting a Tone Frequency
1 Press [F], [A].
e
The
current
receive/
transmit
tone
frequency
appears.
The
Gelaulbt
is
nee:
5
Hz.
Se ee
2 Tart the Tuning tei to selec! the appropriate
receive/ transmit tone frequency.
* The frequencies listed in the table below are
selectable.
3
Press
any
key
other
than
[MONI]
and
[D]
to
complete
the
setting.
To select a separate receive and transmit tone
frequency
for
the
CTCSS
function
{page
25},
install
the
optional
TSU-8
unit
{page
43},
then
proceed
to
the
subsequent steps.
4 Press [F], [6].
e
The
current
receive
tone
frequency
appears.
The
default
is
OFF.
5 Turn the Tuning control to select the appropriate
receive tone frequency.
e
The
frequencies
listed
in
the
following
table
are
@
|
selectable.
e The tone frequency that you selected in step 2 is used
for transmitting.
6 Press any key other than [MONIT] and [D] to
Comper the setting.
14750 Hz: European versions only

m@
Automatic
Repeater
Offset
1
Press
[*
]
to
enter
Menu
mode.
(U.S.A./
Canada/
Europe
Only)
2
Select
Menu
No.
12.
This
function
automatically
selects
an
offset
direction
according to
the
operating
frequency
that
you
select.
The
transceiver
is
programmed
for
offset
directions
as
shown
below.
To
obtain an
up-to-date
band
plan
for
repeater
offset
direction,
contact
your
national
Amateur
Radio
association.
U.S.A. and Canada versions
This
complies
with
the
standard
ARRL
band
plan.
144.0 145.5 146.4 147.0 147.6
145.1 146.0 146.6 147.4 148.0 MHz
|= fe [+[e]-[+[e]-]
S: Simplex
European versions
4 Press any key other than [MONI], [F], and [D] to exit
144.0
145.6
145.8
146.0
MHz
Menu
mode
| s [| - | s |
S: Simplex
Note:
Automatic
Repeater
Offset
does
not
function
when
Reverse
is
ON.
However,
switching
Reverse
ON
after
Automatic
Repeater
Offset has selected an offset (split) status, exchanges the receive
and transmit frequencies.