Kenwood TH-22A User manual

QOOM\NA»
144 MHz FM Transceiver
430/440 MHz FM Transceiver
TH-22A/22AT/22E
TH-42A/42AT/42E
INSTRUCTION MANUAL
KENWOOD CORPORATION
©B62-0501-10(K, P, &, T, X, M)
12 11 10 09 08 07 06 05 04 03 02

Mode!s
Covered
by
this
Manual:
e TH-22A
e TH-22AT:
e TH-22E
e TH-42A
© TH-42AT:
e TH-42E :
144 MHz FM transceiver
(Australia/ General)
144 MHz FM transceiver
(U.S.A./ Canada/ General)
144 MHz FM transceiver (Europe)
430 MHz FM transceiver (General)
430 MHz FM transceiver (General)
440 MHz FM transceiver
(U.S.A./ Canada)
430 MHz FM transceiver (Europe)
The
TH-42
series
is
used
for
all
illustrations,
and
the
430
MHz
band
is
used
for
all
LCD
example
displays.
Notice to the user:
©.
ATTENTION (U.S.A. Only)
a
Nickel-Cadmium
battery
must
be
recycled
or
Fy
=
disposed
of
properly.
State
jaws
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 to this equipment.
FCC WARNING
This equipment generates or uses radio frequency energy.
Changes or modifications to this equipment may cause harmful
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 accardance
with the instructions, may cause harmful 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 turning the equipment off
and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from
that to which the receiver is connected.
Consult the deaier for technical assistance.

THANK YOU
We are grateful you decided to purchase this KENWOOD
FM
transceiver.
The
TH-22/TH-42
series
of
handhelds
were
developed
to
satisfy
the
requirement
for
a
small
handheld that’s simple to operate yet has superior
performance
across
the
band.
Users
of
this
series
of
handhelds will discover the transceiver’s Menu Set-up
method
for
feature
configuration
recently
incorporated
in
other KENWOOD products.
KENWOOD
believes
that
the
compact
size
coupled
with
the
reasonable
cost
will
guarantee
your
satisfaction
with
this
product.
PRECAUTIONS
Please
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.
e When using an external power supply, connect the
recommended
DC
cable
(option)
to
the
DC
IN
jack
on
the transceiver.
e
When
connecting
the
transceiver
to
a
cigarette
lighter
socket
in
a
mobile,
use
the
recommended
cigarette
lighter
cable
(option).
e Before recharging a mobile battery, unplug the
cigarette lighter cable from the lighter socket. Voltage
spikes sometimes present during charging can
damage the transceiver.
e Do not recharge the NiCd battery pack for more than
15 hours {PB-33: 30 hours) with an external power
supply. Switching ON the power supply begins
recharging the battery pack automatically.
e Do not expose the transceiver to long periods of direct
sunlight or place the transceiver close to heating
appliances.
« Do not place the transceiver in excessively dusty or
humid areas, or on unstable surfaces.
e ‘f an abnormal odor or smoke is detected coming from
the transceiver, turn OFF the power immediately.
Contact a KENWOOD service station or your dealer.
e Do not modify this transceiver unless instructed by
this manual or by some other approved KENWOOD
communication.
CAUTION: The recommended transceiver duty cycle is 1 minute of
transmission and 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.

FEATURES: svete lye tgaiticaedaitareigasiys.ccune ees
ACCESSORIES a cadunans eieitigndraiaiiee paigetted 506 Fae ad
CONVENTIONS FOLLOWED IN THIS MANUAL ..
BATTERY INFORMATION ................0.00:2 5c ees
NiCd BATTERY PACK (PB-32/PB-34) .............
ROCHAIGING © .c8icu cats de oarnt eet olddiead ait an:
Installing/Removing the Battery Pack .............
INSTALLING/REMOVING MANGANESE OR
ALKALINE BATTERIES ...............00....cc eee
BATTERY VOLTAGE LEVEL ..................50005.
BATTERY OPERATING TIME (HOURS) ..........
YOUR‘FIRST QSO> ei cics teoienrsaices cuteaarecmeeegen
GETTING ACQUAINTED ..................... wagant sets
ORIENTATION: uteri ssc actus ouasioa ee
KEYS, CONTROLS, SWITCHES,
INDICATORS .......... RON ee rn eon
JACKS AND CONNECTORS ........000..cccccccc0s
ISR LA aves ket) oss Be etd nett oor tuaeh teas te
MENU SET-UP oo0......cccecccccssseseeseeceeneees
RECEIVING 2 rsscehecxsntetartins aoeug dele Seeks woedns
SWITCHING POWER ON/OFF ....................
SQUELCH THRESHOLD LEVEL .................
SELECTING FREQUENCY STEP SIZE .........
Changes in Displayed Frequencies .............
CONTENTS
1 DIRECT KEYPAD FREQUENCY ENTRY ........ 16
1 1 MHZ STEP FREQUENCY CHANGE ........... 17
KEYLOCK sear se tet neuen, sani ee 17
2 UNLOCKING ENC/SQL CONTROL ............... 18
3 BEEP TONE ON/OFF ..........0........0............ 18
3 TRANSMITTING 200.0000... ..cccc ccc cece ccc teen eens 19
3 SELECTING OUTPUT POWER .................... 19
3 TIME-OUT TIMER (TOT) ..0....00ccccccccceeeeeeees 19
INHIBITING THE TRANSMITTER ................. 20
4 BUSY FREQUENCY LOCK-OUT .................. 20
5 MEMORY CHANNELS 02.20 21
5 STORING DATA IN MEMORY ...................-. 21
6 Simplex Memory Channels ............000..000.. 21
7 Split Memory Channels ........................205- 22
RECALLING MEMORY CHANNELS .............. 23
7 Using the ENC/SQL Control .........00. ee. 23
Using the Keypad .....0.... cc ee cece eee 23
8 MEMORY — VFO TRANSFERS .................. 23
9 ERASING MEMORY CHANNELS ...............-. 24
10 GALL JORARINEL, 4/25 cscteves ei ciiacedscsmaueunttreas 24
12 Recalling Call Channel .........000..00...000ceee ee 24
13 Changing Call Channel Contents (Simplex) .... 25
13 Changing Call Channel Contents (Split) ........ 25
13 CHANNEL DISPLAY FUNCTION .................. 25
14 INITIALIZING MEMORY ....0.. 00... 0c ee 26
15 VFO Reset (Partial) 0.0000. 26
Memory Reset (Full) 20.00.0000... eee eee eee 26

OPERATING THROUGH REPEATERS
TRANSMITTER OFFSETS
SELECTING OFFSET DIRECTION
AUTOMATIC TRANSMIT OFFSET
U.S.A. and Canada Versions
European Version
Canceling Automatic Offset
SELECTING OFFSET VALUES MANUALLY ...
REVERSE FUNCTION
TONE ACCESS
Activating the Keypad
DUAL TONE MULTI-FFREQUENCY (DTMF)
Making DTMF Calls
Storing DTMF Numbers
Confirming Stored DTMF Numbers
Transmitting Stored DTMF Numbers
Activating DTMF Transmit Hold
SCAN RESUME METHODS
Time-Operated Scan
Carrier-Operated Scan
SELECTING THE SCAN RESUME METHOD ..
MEMORY SCAN
Locking-Out Memory Channels
CALL/VFO SCAN
CALLU/MEMORY SCAN
SAVING POWER ooo. ce teens 39
BATTERY ‘SAVER? 2: .:c2ccsisccspeataguemeordaanes 39
AUTOMATIC POWER OFF (APO) ................ 39
CONTINUOUS TONE CODED SQUELCH
SYSTEM (CTCSS) 2000s 40
SELECTING CTCSS FREQUENCIES ............ 40
USING CTCSS oo... eee eee 40
DUAL TONE SQUELCH SYSTEM (DTSS) ....... 41
ACTIVATING DTSS «0000.0. 41
STORING DTSS CODES 00000. 42
DTSS AND REPEATERS .................0:0000 42
PAGES sorcucst, ths pdacis Garis nse deoinaigtew en’ veh tnae ea 8 43
OVERVIEW. e225 Saunt ote eee awh Bheeteeeialey 43
PAGE CODE MEMORY ..............0.0...::0000. 43
STORING PAGE CODES ...........00...0...005. 43
GALLING og .cey enc et ection toate s pages aah uae geais bat 44
RECEIVING? sac iciigssctedl ye hide ceeds Seas tdidon dee 45
Receiving a Call with your Station Code ....... 45
Receiving a Call with a Group Code ............ 45
PAGE CODE AND REPEATERS .................. 46
LOCKING-OUT CODES ...........000.. ee 46
AUTO PAGE CANCEL .....00002020 ee 47
OPEN: PAGES civp eset gene tied erty ahs dla 47
TONE ALERT scccth co mneitivewa ee teale pie 48
ACTIVATING TONE ALERT ........................ 48

REMOTE CONTROL .....0..0 200.0000 49
REMOTE CONTROL USING SMC-33
ORSSM C234 hccuht conauanradnouasnatalieniny Aen 49
CONNECTING EQUIPMENT FOR REMOTE
CONTROL wobec bn th de ea a 50
PACKET OPERATION .............0..0 ce ceeee ees 61
MAINTENANCE ........0.0.000.0000.ceeeeeeeeee ees 52
GENERAL INFORMATION .....................005 52
SERVICE? wt giisi.gcet asa sgt keetenetaraumg ess 52
SERVICE NOTE. ec csatiges eaten ONG ett ness 53
GLEANINGE s:cci-ccca het achat un obo banatabagihoas sls 53
TROUBLESHOOTING ...0.. 2... 54
OPTIONAL ACCESSORIES ...................2.20.. 58
INSTALLING OPTIONS 2.000... 60
INSTALLING THE CTCSS UNIT (TSU-8) ....... 60
INSTALLING THE SPEAKER-MIC JACK
STRAIN RELIEF 2.34 ax ieee Yk ede 61
CONNECTING OPTIONAL EQUIPMENT ........ 62
SPECIFICATIONS 2 ikcdseineg siete seek eend edd 63
GEOSSARY. a2 tecceeiet os ihre cea eras 64
QUICK REFERENCE GUIDE ....00... ee, 71

FEATURES
e Easier to handle due to the thinner profile, smaller
size, and lighter weight. Encourages a "take-it-
anywhere" philosophy.
e High power output produced from low input voltage
means the NiCd battery pack is more compact than
previous handhelds.
e Innovative Menu Set-up method combines
sophisticated features with simple operation; only
frequently-used keys are placed on the front and side
panels.
ATTENTION! Some transceiver versions are not equipped
with a keypad as standard equipment; however, your dealer
can install this optional accessory. Functions requiring the
keypad cannot be used if no keypad is installed.
ACCESSORIES
Before beginning to learn the functions of your
transceiver, check the accessories list below against
equipment received to be sure everything listed is
included in your package.
Accessory Quantity
Antenna
TH-22 T90-0472-xX
TH-42 T90-0473-XX
Hand strap
Belt hook
ack protector cap
Cabietie——SSSSCSCSCSCS~*dC 0K |
[Screws 0 N35-3004-XX | 2
Washers______—S FGI |
NiCd battery pack
W09-0826-XX
W09-0825-XX
<— —]
PB-32 1 (6 V, 600 mAh)
PB-34 2 (9.6 V, 600 mAh)
Battery charger (BC-17) ;
U.S./Canada
Europe (excluding U.K.)
United Kingdom
Australia W08-0439-XX
General market W08-0441-XX
linstruction manual B62-0501-XX | ot
[Warranty card (U.S/ Canada/Europe)| = - dT |
1 Excluding some General market versions.
2 Some General market versions only.
When you have everything checked out, you are ready
for "YOUR FIRST QSO” {page 6}. Review this section
and be on the air within minutes. Other sections follow
in a logical order to help you efficiently learn the potential
of this transceiver.
W08-0437-XX
W08-0440-XX
W08-0438-XX

CONVENTIONS FOLLOWED IN THIS
MANUAL
The writing conventions described below have been
followed to simplify key stroke instructions and avoid
unnecessary
repetition.
This
format
is
less
confusing
for
the reader. Reviewing the following information now will
reduce your learning period. That means less time will
be spent reading this manual; more time will be available
for operating.
Note:
» Basic procedures are numbered sequentially to guide you
step-by-step.
Additional
information
pertaining
to
a
step,
but not essential to complete the procedure, is provided in
bulleted form following many steps for further guidance.
» Most procedures require that you enter a final key stroke
that acts as a terminator for the procedure. You can, if you
preter, simply wait for approximately 10 seconds rather
than enter this final key entry.
INSTRUCTION MEANING
Press Press the keys
[KEY1] + [KEY2]. simultaneously.
WHAT TO DO
Press and hold
KEY1 down, then
press KEY2.
Press KEY1
mamentarily,
release KEY1,
then press KEY2.
With the
transceiver power
OFF, press and
hold KEY, then
turn ON the
transceiver power.
Press
[KEY1]}, [KEY2].
Press the keys
in sequence.
Press
[KEY] + POWER ON.
Press the key
while powering
the transceiver.
Press and hold
the Function key
until the “F"
indicator on the
display begins
flashing.
Press the
Function key for
longer than 1
second.
Press and haid
KEY until the
function begins.
Press
[KEY] (1 s).
Press the key
for longer than
1 second.

BATTERY INFORMATION
NiCd BATTERY PACK (PB-32/PB-34) Note:
You must charge the battery pack before you can use it paliabarging: shculc:be dove within an ambien.
charg ry Pp ay : temperature between 5°C to 40°C (41°F to 104°F).
The pack is delivered uncharged to provide you with the Recharging outside this range may not fully charge the
greatest number of charge/discharge cycles. It takes battery.
several charge/discharge cycles before achieving the full > ff the entire display is blinking, or if turning PWR/VOL
battery pack capacity. After storing the pack for more Coes Ns nat power the transceiver, recharge the
attery pack.
than 2 months, recharge it before use.
» The BC-17 charger is designed to recharge only PB-32,
PB-34, PB-30 (option), or PB-33 (option). Never use
: the BC-17 to recharge other types of batteries.
mg Recharging
Insert the plug from the BC-17 charger into the DC IN a Installing/Removing the Battery Pack
jack on the right side of the transceiver. Then plug Insert the battery pack into the bottom of the
the charger AC plug into an AC wail outlet. Do not transceiver, and push in until the tab on the pack
charge the battery for more than 15 hours. Exceeding locks in place.
the recommended charge period shortens the useful
life of the pack and adversely affects battery
performance.
; To remove the battery pack, simultaneously press the
DC IN jack tab on the back of the pack while pulling out the pack
from the transceiver.

INSTALLING/REMOVING MANGANESE OR
ALKALINE BATTERIES
(Some General Market Versions)
A fully-charged NiCd battery pack allows optimum
performance of your transceiver especially for long
transmissions or extended operation. However, when a
NiCd battery pack is not available, use high quality
alkaline batteries. If manganese batteries are used, it is
recommended that transmissions be made only with the
“L" or "EL" transmitter output power.
1 To remove the battery case, simultaneously press the
tab on the back of the case while pulling out the case
from the transceiver.
2 Open the battery case by simultaneously pressing on
the locking tab on the bottom of the case while pulling
the two case halves apart.
4
Locking
tab
Insert 4 AA manganese or alkaline batteries in the
case half with metal contacts making sure the
+ and — end of each battery is as shown.
e lf replacing batteries, remove the old batteries first
by lifting up on each battery end. Never discard oid
batteries in fire as extremely high temperatures can
cause batteries to explode.
Insert the two small alignment tabs on the other half of
the case into their matching holes in the case half
containing the batteries. Press the case halves
together until the tab on the case bottom locks in
place.
Note:
»
install only alkaline or manganese batteries in the battery case.
installing NiCd batteries in the battery case will cause an
electrical short that generates heat and damages either the
battery case or transceiver.
Remove the batteries from the battery case if your transceiver
will not be used for a long time.

5 Insert the battery case into the bottom of the
transceiver, and push in until the tab on the case
locks in place.
CAUTION: Do not install the battery pack or batteries in a
hazardous environment where sparks could cause an
explosion.
BATTERY VOLTAGE LEVEL
The horizontal bars on the Display show the relative
battery voltage while transmitting using "EL" output
power. Recharge or replace the batteries as necessary
using the accompanying diagrams as reference.
“rt
Wa0u
nope wees
APO
[new
Battery
|
ischargea
eatery
|
NiCd
Battery
(PB-30)
NiCd
Battery
(PB-32/
93}
NiCd
Battery
{FES
34)
~
eS
TIME
(HOURS)
Transmitter Output Power
Sie
High
|
Low
Economic
Low
ape
"EL"
p32] 4 as
eS EE a
“e530 fase ie
* 6 seconds Transmit, 6 seconds R arbi
48 seconds Standby (AF output 0.2 W / 8 ohms)
e Battery Saver ON

YOUR FIRST QSO
If
you
tend
to
discard
instruction
manuals
along
with
the
3
Turn
the
ENC/SQL
control
to
select
a
frequency.
packaging
material....please
don’t.
The
4
steps
below
will
get
you
on
the
air
in
your
first
QSO
within
minutes
to
allow
you
to
experience
the
exhilaration
that
comes
with
opening
a
brand
new
transceiver.
After spreading the word to your best buddies that you
are now "handy-active", settle back in your most
comfortable operating chair with this manual and your
favorite
drink
for
an
hour
or
two.
The
time
spent
will
be
worthwhile.
e
If
accessing
a
repeater,
press
[F],
[REV]
to
select
a standard positive transmit offset. Repeat to
select a negative offset.
1 Install a new set of batteries or a charged battery pack
‘(page 3}. Holding the provided antenna at its base,
twist
the
antenna
onto
the
BNC
connector
until
you
e
If
a
subaudible
tone
is
required
to
access
the
feel
the
antenna
click
in
place.
repeater,
see
page
30.
2
Turn
the
PWR/VOL
control
clockwise
to
the
11
4
When
the
frequency
is
clear,
press
[PTT]
and
begin
o'clock
position.
communicating.
e Release [PTT] to receive.
CAUTION: Transmitting with the supplied antenna near other
electronic equipment can interfere with that equipment. Also,
transmitting near a regulated power supply not specified may
cause the power supply to output an extremely high voltage
that could damage both your transceiver and any other
equipment connected to the supply.

GETTING ACQUAINTED
ORIENTATION
@
PWRIVOL
@ENC/SQL
control control
connector indicator
5 External LED
speaker jack
@ptt
switch
© Lamp 10°0% 0°
switch
OR
© MONI 440MHz FM TRANSCEIVER TH-424T
switch
PAG = «DTSS = DTMEM
O:OxOS @
10:00 @:
TH-42AT
The keypad is an option for
General market versions. TH-42A/42E (Keypad optional)

The purpose of the following sections is to describe
basic functions. Please refer to later sections for greater
detail.
KEYS, CONTROLS, SWITCHES,
INDICATORS
@ PWR/VOL (Power/Volume) control
Turn the control clockwise until it clicks to switch ON the
transceiver. To switch OFF the transceiver, turn
counterclockwise to OFF.
Turning the control clockwise after switching ON the
transceiver increases the volume.
@® ENC/SQL (Encoder/Squelch) control
Select operating frequencies, frequency steps, memory
channels, transmit offsets, Tone frequencies, menu
items, and use to reverse scan direction. Also, use to
manually set the receiver squeich threshold level.
@® ON AIR indicator LED
Lights when [PTT] is pressed while a frequency within
the transmit band is selected.
@® PTT (Push-To-Talk)
Hold down to transmit. Release to receive.
© LAMP
Press to illuminate the display. The display remains lit
while [LAMP] is held down. Approximately 5 seconds
after releasing [LAMP], the light goes OFF if no other
key is pressed. Pressing any key except [LAMP] while
the display is lit restarts the 5 second timer. Otherwise,
pressing [LAMP] turns OFF the light immediately. To
latch the light ON, press [F], [LAMP]. The display
remains lit until [LAMP] is pressed again.
© MONI (Monitor)
Hold down to monitor the operating frequency even when
noise squelch, CTCSS, DTSS, Page, or Tone Alert is
ON. "BUSY" appears on the display while MONI is held
down. Also, use in combination with the ENC/SQL
control to manually set the receiver squelch threshold
level.
@ F (Function)
Use in combination with dual function keys to select the
alternate key function. Also, use to select Memory
Storage and 1 MHz Step.
VFO
Press to select the VFO.
@ MR (Memory Recall)
Press to select Memory Recall.

@ CALL
Press to recall the Call channel.
@ T/CT (Tone/CTCSS)
Press to switch between Tone and CTCSS functions.
@ REV (Reverse)
Press to reverse the transmit and receive frequencies.
This is particularly useful when monitoring a repeater to
check the signal strength of a station on its transmit
frequency.
® Keypad
Use to input numeric data such as frequencies, memory
channel numbers, etc. Also, use to input numbers when
sending DTMF digits and to control DTSS, Page, and
DTMF memory functions.
JACKS AND CONNECTORS
@ BNC connector
Attach the supplied antenna.
® External microphone/speaker jacks
Connect an external microphone, speaker or speaker-
microphone if desired. When using the transceiver with
any of these accessories, take care not to let water enter
the speaker jack or microphone jack.
@® €xternal DC IN jack
Connect the BC-17 wall charger in order to charge the
transceiver’s rechargeable battery pack.
Connect the optional PG-2W DC power cable if an
external power supply is used. The supply voltage must
be in the range from 5 V to 16 V.
Connect the optional PG-3J cigarette lighter cable when
using a cigarette lighter socket as a power source during
mobile operation.

DISPLAY
© wO
Appears
when
Key
Lock
is
ON.
Most
keys
and
the
ENC/SQL
conirol
are
disabled
if
this
function
is
activated.
The
ENC/SQL
control
lock
can
be
bypassed.
@ PAG
Appears
when
Page
is
ON.
Allows
you
to
Page
other
stations
that
have
the
Page
function
on
their
transceivers.
:
® TX.S
Appears
when
Transmit
Inhibit
is
ON.
No
transmissions
can
be
made.
10
@® DT
Appears
when
the
Dual
Tone
Squelch
System
is
ON.
You
can
use
your
transceiver
for
sending
and
receiving
digitally-addressed
transmissions.
© R
Appears when the Reverse function is ON. Transmit and
receive frequencies are reversed.
© TorcCtT
Appears when the subaudible tone encoder ("T") is ON,
or
when
the
Continuous
Tone
Coded
Squeich
System
("CT") is ON.

®+ -E]
Displays the transmit offset direction in relation to the
receive frequency.
eee eee
Displays the operating frequency, frequency step, Tone
frequency, and current menu settings.
‘Displays the current memory channel selected when
using Memory Recall.
Og
Appears when Tone Alert is ON. Flashes when a signal
is received.
®@ $
Appears when Battery Saver is ON.
@Q -
Appears when the selected memory channel contains
data while using Memory Store.
Bx
Appears when the selected channe! or Page cade is
locked-out. While memory scanning, the transceiver
does not stop on locked-out channels. During Page
operation, the squelch does not open for locked-out
codes.
@ suaennEw ee
While receiving, displays the relative signal strength of
received signals. While transmitting, displays the relative
battery level.
GS —
Blinks to indicate the 1 MHz step function is ON.
®
Appears when the squelch is open due to a received
signal (or noise) that is greater in strength than the
squelch threshold level.
® EO
Appears when the transmit output power is set to Low
(“L") or Economic Low ("EL"). Neither indicator appears
when High power is selected.
@® APO
Appears when Automatic Power Off is ON.
Cl E |
Appears when [F] is pressed. Indicates that the
alternate function of dual function keys can be used now.
11

MENU SET-UP 2 Turn the ENC/SQL control to select the menu item to
Many of the features on the transceiver are selected by be changed: ;
means of a configurable menu system. This system ¢ The current selection appears.
reduces the number of keys and controls without 3 Each time [CALL] is pressed, the different selections
eliminating important features. To change the available appear on the display.
configuration of a Menu item, use the following 4 Press any key other than [CALL], [LAMP], or [MONI]
procedure: to exit Menu Set-up and save the selection viewed last
on the display.
The table below lists the configurable menu items:
Menu No.| Description | Selections _| Default [Reference Page
| 02 [Automatic Power Off (APO) ON/OFF ON 39
Scan Resume:
Time-operated (TO), Carrier-operated (CO) i ve
OFF 20
| 06 [Tuning Encoder Lock ON/OFF
ON/OFF ON! 28
| 08 |DTSS/Page Transmitdelay | 850 ms: / 550 ms
| 09 {DTMF Transmit Hold (2s) | CONF OOF 34
| 10 [OpenPage | ONE COFF 47
OFF 47
ON/OFF OFF 25
| __13 _{Time-out Timer (TOT) 30/ 60/ 90/ 180/ 900 s
ON/OFF OFF 20
1 TH-22AT (U.S.A. and Canada), TH-22E only
Note: While accessing Menu Set-up, waiting for longer than 10 seconds without entering any data ends the set-up operation
automatically and returns you to the previous display.
1 Press [CALL] + POWER ON to enter Menu Set-up.
12

RECEIVING
SWITCHING POWER ON/OFF
To switch ON your transceiver, turn the PWRVVOL
control clockwise and set it at the 11 o'clock position.
Various indicators, including a receive frequency, appear
on the display. Due to the automatic squelch feature, no
sound will be heard from the speaker until you receive a
call.
Use the same control to adjust the volume more
precisely while receiving your first call, or press [MON]]
and adjust the PWR/VOL control to set the background
noise to a comfortable level. Pressing [MONI] always
allows you to listen to activity on the selected frequency
as long as this key is held down.
To switch OFF the transceiver, turn the PWRAVVOL
control counterclockwise until it clicks at the OFF
position.
SQUELCH THRESHOLD LEVEL
The receiver squelch is automatically controlled by the
transceiver’s microcomputer based on the measured
noise level. However, you can override the
microcomputer setting, if you wish.
1 Turn the ENC/SQL control to select a frequency that
is not busy.
2 Press [FJ], [MONI].
e The current squelch threshold level appears.
e The default is "5".
3 Turn the ENC/SQL control to select the desired level
(0 to 9).
e 0: Selects lowest threshold level (squelch open).
e $: Selects highest threshold level.
4 Press any key other than [LAMP] or [MONI].
13

SELECTING FREQUENCY STEP SIZE
Choosing the correct step size when operating is
essential in order to select your exact operating
frequency with the ENC/SQL control. The best step size
is the largest step that will still allow you to use the
ENC/SQL control to select all frequencies on which you
plan to operate. Using the best step size reduces the
time required to select new frequencies with the
ENC/SQL control; operating becomes easier.
Default (kHz)
Version
Canada
U.S.A.
Australia
Europe ..-
General
1 Press [VFO] to select the VFO.
2 Press [F], [T/CT].
e The current frequency step appears.
14
3 Turn the ENC/SQL control to switch between
available frequency steps.
« As you turn the ENC/SQL control clockwise or
counterclockwise, the following selections appear:
SkHz “> 10kHz ~—> 15 kHz
25 kHz —~— > 12.5 kHz ~—» 20 kHz
4 Press any key other than [LAMP] or [MONI].
«
The
new
step
size
is
stored,
and
the
previous
display
is
restored.
Note. The step size can be set separately for the VFO, Calf
channel, and memory channels.