Kenwood TH-22A User manual

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m
144 MHz FM Transceiver
430/440 MHz FM Transceiver
TH-22A/22AT /22E
TH-42A/ 42ATI42E
INSTRUCTION MANUAL
KENWOOD CORPORATION
©B62-0501-10(K, P, E, T, X, M)
12
11 10 09 08 07 06 05 04 03 02

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Models Covered by this Manual:
• TH-22A : 144 MHz FM transceiver
(Australia/ General)
• TH-22AT : 144 M
Hz FM transceiver
(U.S.A./ Canada1 General)
• TH-22E 144 MHz
FM transceiver (Europe)
• TH-42A 430 MHz FM transceiver (General)
• TH-42AT: 430 MHz FM transceiver (General)
440 MHz FM transceiver
(U.S.A./ Canada)
• TH-42E : 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)
Nickel-Cadmium battery must
be recycled or
disposed at property. State laws may 'lary
regarding the nandling and disposal of Nickel-
Cadmium batteries. Please contact your
Autt10rized KENWOOD Dealer for more
mformation.
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 authonty 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 t19sted and found to comply with the
limits
for a Class B digital cievice, 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 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 dl9termined 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 dealer for technical assistance.

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
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.
.
• When using an external power supply, connect the
recommended
DC cable (option) to the DC IN jack on
the transceiver.
• When connecting the transceiver to a cigarette lighter
socket
in a mobile, use the recommended cigarette
lighter cable (option).
• Before recharging a mobile battery, unplug the
cigarette lighter cable from the lighter socket. Voltage
spikes sometimes present during charging can
damage the transceiver.
• 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.
• 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.
• If an abnormal odor or smoke is detected coming from
the transceiver, turn OFF the power immediately.
Contact a KENWOOD service station or your dealer.
• 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 af
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.

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CONTENTS
FEATURES ....
1
1
2
3
ACCESSORIES ........................ .
CONVENTIONS FOLLOWED
IN THIS MANUAL .
BATTERY INFORMATION
.......................... .
NiCd BATTERY PACK (PB-32/PB-34) 3
Recharging .................. ........... ............ 3
Installing/Removing the Battery Pack . 3
INSTALLING/REMOVING MANGANESE OR
ALKALINE BATTERIES . ..
.. ................... 4
BATTERY VOLTAGE LEVEL ....... .............. 5
BATTERY OPERATING TIME (HOURS)
.. 5
YOUR FIRST QSO .. . ..................... ... . 6
GETTING ACQUAINTED ....... . .................. 7
ORIENTATION
.. ...... ... .. .... .. .... ... . . 7
KEYS, CONTROLS, SWITCHES,
INDICATORS
........... ..... ........... ... ... ... . 8
JACKS AND CONNECTORS ..................... 9
DISPLAY.......... ..... .... ....... ..... ........ 10
MENU SET-UP ........... .... . .. ...... .......... 12
RECEIVING. 13
ii
SWITCHING POWER ON/OFF ................. 13
SQUELCH THRESHOLD LEVEL ................. 13
SELECTING FREQUENCY STEP SIZE ......... 14
Changes
in Displayed Frequencies ............. 15
DIRECT KEYPAD FREQUENCY ENTRY ........ 16
1 MHZ STEP FREQUENCY CHANGE ........... 17
KEY
LOCK..... . .. . .. ..... ...... .. . ........ .......... 17
UNLOCKING ENC/SQL CONTROL ...............
18
BEEP TONE ON/OFF ............................... 18
TRANSMITTING ......... .
........ . .......... 19
SELECTING OUTPUT POWER . ........ 19
TIME-OUT TIMER (TOT) ......................... .
INHIBITING THE TRANSMITTER
................ .
BUSYFREQUENCYLOC~OUT
19
20
20
MEMORY CHANNELS .............................. 21
STORING DATA IN MEMORY..................... 21
Simplex Memory Channels .. ................. .. . 21
Split Memory Channels ............. 22
RECALLING MEMORY CHANNELS .............. 23
Using the ENC/SQL Control
..................... .
Using the Keypad ..... ..... .. .
................. .
MEMORY
~ VFO TRANSFERS .......... .
ERASING MEMORY CHANNELS
................ .
CALL CHANNEL
.......................... .
Recalling Call Channel
............................ .
Changing Call Channel Contents (Simplex) .
Changing Call Channel Contents (Split)
....... .
CHANNEL DISPLAY FUNCTION
........ .
INITIALIZING MEMORY ...... .
................ .
VFO Reset (Partial) ........ .
................ .
Memory Reset (Full)
.............................. .
23
23
23
24
24
24
25
25
25
26
26
26

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OPERATING THROUGH REPEATERS .....
27
TRANSMITTER OFFSETS ......... ..
27
SELECTING OFFSET DIRECTION .... 27
AUTOMATIC TRANSMIT OFFSET . 28
U.S.A. and Canada Versions ..................... 28
European Version ...... ............... 28
Canceling Automatic Offset..................... 29
SELECTING OFFSET VALUES MANUALLY 29
REVERSE FUNCTION ... ............... ....... 30
TONE ACCESS .............................. .
AUTOPATCH
..... ......... .
Activating the Keypad ...... .......... .
...... .
30
31
31
DUAL TONE MULTI·FREQUENCY (DTMF)
MEMORY........................................... . 32
Making DTMF Calls ................ .
Storing DTMF Numbers .............. .......... .
Confirming Stored DTMF Numbers
......... .
Transmitting Stored DTMF Numbers
......... .
Activating DTMF Transmit Hold
............... .
SCAN ...
32
32
33
34
34
35
SCAN RESUME METHODS .... .................. 36
Time·Operated Scan .. .. . .. ............. 36
Carrier-Operated Scan ............................ 36
SELECTING THE SCAN RESUME METHOD .. 36
MEMORY SCAN ..................................... 37
Locking-Out Memory Channels ............ . ... .
VFO SCAN
........................................... .
CALLNFO SCAN .. ............... .
............ ..
CALUMEMORY SCAN
....................... .
37
38
38
38
SAVING POWER
BATTERY SAVER
............ .
AUTOMATIC POWER
OFF (APO)
CONTINUOUS TONE CODED SQUELCH
39
39
39
SYSTEM (CTCSS) .. . .................. .
40
SELECTING CTCSS FREQUENCIES ... ........ 40
USING CTCSS . ....... .... .. . 40
DUAL TONE SQUELCH SYSTEM (DTSS)
41
ACTIVATING DTSS .. .. ...... .. . ... ...... ....... .. 41
STORING DTSS CODES . . .... 42
DTSS AND REPEATERS ...... ............... ...
42
~GE .............................................. ~
OVERVIEW ... . ..... .......... 43
PAGE CODE MEMORY ............. ............... 43
STORING PAGE CODES ...... . ....... ..........
~
CALLING.......... ..... .. ..... .... .. ... ..... .. ...... 44
RECEIVING ........................................... 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 .... ............ .. 46
AUTO PAGE CANCEL ............... .... ... 47
OPEN PAGE ....... .. ........ ......... .. ......... 47
TONE ALERT .............................. .. .. ......... 48
ACTIVATING TONE ALERT.... . ............. .... 48
iii

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REMOTECONTROL ............................. . 49
REMOTE CONTROL USING SMC-33
OR SMC-34 ..... .. . . . ......... 49
CONNECTING EQUIPMENT
FOR REMOTE
CONTROL . 50
PACKET OPERATION
....
51
MAINTENANCE.................. .................. 52
GENERAL INFORMATION
...... ................. 52
SERVICE . ......... .................. 52
SERVICE
NOTE................ ............. 53
CLEANING ... . . . ..
.. . 53
TROUBLESHOOTING .
OPTIONAL ACCESSORIES
INSTALLING OPTIONS
,,,,,,....... 54
....................... , 58
'' '''''''' ,,,.,,,,, 60
INSTALLING THE CTCSS UNIT (TSU-8) ...
.. 60
INSTALLING THE SPEAKER-MIC JACK
STRAIN RELIEF . . .. . . .. ... . . . . ... .. 61
CONNECTING OPTIQNAL EQUIPMENT ..... 62
SPECIFICATIONS .
.. ....... .. .... .............. ..... 63
GLOSSARY
................ . " '
.. '... '... 64
QUICK REFERENCE GUIDE .. ......... ...........
71
iv

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FEATURES
• Easier to handle due to the thinner profile, smaller
size, and lighter weight. Encourages a "take-it-
anywhere" philosophy.
• High power output produced from low input voltage
means the NiCd battery pack
is more compact than
previous handhelds.
• 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 Part Number
Quantity
Antenna
TH-22 T90-0472-XX
TH-42 T90-0473-XX
Hand strap J69-0327-XX
Belt hook J29-0465-XX
Jack protector cap 809-0335-XX
Cable tie J61-0422-XX
Screws N35-3004-XX
Washers F29-0435-XX
NiCd battery pack
PB-32 1
(6 V, 600 mAh) W09-0826-XX
PB-34 2 (9.6
V, 600 mAh) W09-0825-XX
Battery case (BT-9) 2 --
Battery charger (BC-17)
U.S./Canada WOS-0437-XX
Europe (excluding U.K.) WOS-0440-XX
United Kingdom WOS-0438-XX
Australia WOS-0439-XX
General market WOS-0441-XX
AC plug adapter 2 E19-0254-XX
Instruction manual 862-0501-XX
Warranty card (U.S./ Canada/ Europe) --
1 Excludmg some General market vers1ons.
2 Some General market versions only.
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
When you have everything checked out, you are ready
for
"YOUR FIRST QSO" (page 6}. Review this section
and be on the air within mtnutes. Other sections follow
in a logical order to help you efficiently learn the potential
of this transceiver.
1

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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
bulleteo' 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
prefer, simply wait for approximately 10
seconds rather
than enter this final key entry.
2
INSTRUCTION
Press
[KEY1] + [KEY2].
Press
[KEY1 ], [KEY2].
Press
[KEY]+ POWER ON.
Press
{F)
(1 s).
Press
[KEY]
(1 s).
MEANING
Press the keys
simultaneously.
Press the keys
in sequence.
Press the key
while powering
the transceiver.
Press the
Function key for
longer than 1
second.
Press the key
for longer than
1 second.
WHAT TO DO
Press and hold
KEY1 down, then
press KEY2.
Press
KEY1
momentarily,
release
KEY1,
then press KEY2.
With the
transceiver power
OFF, press and
hold
KEY, then
turn
ON the
transceiver power.
Press and hold
the Function key
until the
"F"
indicator on the
display begins
flashing.
Press and hold
KEY until the
function begins.

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BATTERY INFORMATION
NiCd BATIERY PACK (PB-32/PB-34)
You must charge the battery pack before you can use it.
The pack is delivered uncharged to provide you with the
greatest number of charge/discharge cycles.
It takes
several charge/discharge cycles before achieving the full
battery pack capacity. After storing the pack for more
than 2 months, recharge it before use.
• Recharging
Insert the plug from the BC-17 charger into the DC IN
jack on the right side of the transceiver. Then plug
the charger AC plug into an
AC wall outlet. Do not
charge the battery for more than
15 hours. Exceeding
the recommended charge period shortens the useful
life of the pack and adversely affects battery
performance.
~
DC IN jack
'~
Note:
~ Recharging should be done within an ambient
temperature between soc to 40°C (41°F to 104°F).
Recharging outside this range may not fully charge the
battery.
~ If the entire display is blinking, or if turning PWR/VOL
clockwise does not power the transceiver, recharge the
battery pack.
~ 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.
• Installing/Removing the Battery Pack
Insert the battery pack into the bottom of the
transceiver, and push
in until the tab on the pack
locks
in place.
To remove the battery pack, simultaneously press the
tab on the back of the pack while pulling out the pack
from the transceiver.
3

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INSTALLING/REMOVING MANGANESE OR
ALKALINE BATTERIES
(Some General Market Versions)
A fully-charged NiCd battery pack allows optimum
performance of your transceiver especially tor 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 ca~re by simultaneously pressing on
4
the locking tab on the bottom of the case while pulling
the two case halves apart.
Locking tab
3 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.
=
~=
• If replacing batteries, remove the old batteries first
by lifting
up on each battery end. Never discard old
batteries
in fire as extremely high temperatures can
cause batteries to explode.
4 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:
t 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.
t Remove the batteries from the battery case if your transceiver
will not be used for a long time.

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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.
BATIERY 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.
APO
....
3
:• .,r,
1 .;f.f. ,_,
•••••••••s
New Battery Discharged Battery
NiCd Battery
(PB-30) •••• ••
NiCd Battery
(PB-32/ 33) •••••• ••••
NiCd Battery
········-
••••••••
(PB-34)
Alkaline Battery ••••••
••
BATIERY OPERATING TIME (HOURS)
---
Transmitter Output Power
Models Batteries High
Low Economic Low
ulu "ELu
PB-30 5.5
8.5 12
TH·22A PB-32 4
85
12
TH-22AT PB-33 8 17 24
TH-22E PB-34 3.5 8.5
12
Alkaline 18 28 40
PB-30 4.5 8 12
TH·42A PB-32 3.5 8 12
TH-42AT PB-33 7
16
24
TH-42E PB-34 3 8 12
Alkaline 15 24 40
• 6 seconds Transmit 6 seconds Receive,
48 seconds Standby (AF output 0.2 WI 8 ohms)
• Battery Saver
ON
5

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YOUR FIRST QSO
If you tend to discard instruction manuals along with the
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.
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
feel the antenna click
in place.
2 Turn the PWRNOL control clockwise to the 11
o'clock position.
6
3 Turn the ENC/SQL control to select a frequency.
•
If accessing a repeater, press [F], [REV] to select
a standard positive transmit offset. Repeat to
select a negative offset.
•
If a subaudible tone is required to access the
repeater, see page 30.
4 When the frequency is clear, press [PTT] and begin
communicating.
• 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.

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
ORIENTATION
@) PTT -+1--tHt-
switch
®LAMP
switch
@MOIIII
swi1tch
GETTING J"CQUAINTED
440MHz FM TRANSCEIVER TH-42AT
I<ENWOOD
...
,,..
DTWF.U
'0'0'0
O•
•0•0•0 0•
>0•0•0
Oo
•O•OoO
Oo
TH-42AT
The keypad is an option for
General
market versions.
Keypad
(DPWRNOL
control
@ENC/SOL
control
3 ON AIR
connector i1ndicator
@External ILED
speaker jack
@External
microphone
jack
TH-42A/42E (Keypad optional)
7

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
The purpose of the following sections is to describe
basic functions. Please refer to later sections for greater
detaiL
KEYS, CONTROLS, SWITCHES,
INDICATORS
CD PWRNOL (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
increaSE9S the volume.
® ENC/SQL (Encoder/Squelch) control
Select operating
fre1quencies, frequency steps, memory
channels, transmit (Jffsets, Tone frequencies, menu
items,
and use to reverse scan direction. Also, use to
manually set the receiver squelch 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.
8
@LAMP
Press to illuminate the display. The display remains lit
while [LAMP]
is held down. Approximately 5 seconds
after
releasin~J [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
timt:Jr. 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.
® MONt (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.
(j) 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.

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
®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 conm3ctor
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.
@ External 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.
9

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
DISPLAY
<D..O
Appears when Key Lock is ON. Most keys and the
ENC/SOL control are disabled if this function is
activated. The ENC/SOL 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.
® TorCT
Appears when the subaudible tone encoder ("T") is ON,
or when the Continuous Tone Coded Squelch System
("CT") is ON.

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
(j) + -EJ
Displays the transmit offset direction in relation to the
receive frequency.
r------------,
~ L------------~
Displays the operating frequency, frequency step, Tone
frequency,
and current menu settings.
® ;---,
·Disp.lays the current memory channel selected when
using Memory Recall.
®~
Appears when Tone Alert is ON. Flashes when a signal
is received.
® s
Appears when Battery Saver is ON.
@.a.
Appears when the seleeted memory channel contains
data while using Memory Store.
@*
Appears when the selected channel or Page code 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.
® ········-
While receiving, displays the relative signal strength of
received signals. While transmitting, displays the relative
battery level.
®-
Blinks to indicate the 1 MHz step function is ON.
®miD
Appears when the squelch is open due to a received
signal (or noise) that is greater
in strength than the
squelch threshold level.
@ [31]
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.
®0
Appears when [F] is pressed. Indicates that the
alternate function of dual function keys can be used now.
11

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
MENU SET-UP
Many of the features on the transceiver are selected by
means of a configurable menu system. This system
reduces the number of keys and controls without
eliminating important features. To change the
configuration of a Menu item, use the following
procedure:
1 Press [CALL] + POWER: ON to enter Menu Set-up.
Menu No. Description
01 Battery Saver
02 Automatic Power Off (APO)
03 Scan Resume:
Time-operated (TO), Carrier-operated (CO)
04 Keypad Beep
05 Transmit Inhibit
06 Tuning Encoder Lock
07 Automatic Transmit Offset
08 DTSS/Page Transmit delay
09 DTMF Transmit Hold
(2 s)
10 Open
Page'
11 Auto Page Cancel
12 Channel Display
13 Time-out Timer (TOT)
14 Busy Frequency Lock-out
1 TH-22AT (U.S.A.
and Canada), TH-22E only
2 Turn the ENC/SQL control to select the menu item to
be changed.
• The current selection appears.
3 Each
time [CALL] is pressed, the different selections
available
appear on the display.
4 Press any key other than [CALL], [LAMP), or [MONI]
to exit Menu Set-up and save the selection viewed last
on
the display.
The table below lists the configurable menu items:
Selections Default Reference Page
ON/OFF
ON :39
ON/OFF
ON :39
TO/CO
TO :36
ON/OFF
ON
18
ON/OFF OFF
:20
ON/OFF OFF 18
ON/OFF
ON1
:28
350 ms I 550 ms 350 ms 42 and 46
ON/OFF OFF
:34
ON/OFF OFF
47
ON/OFF OFF
47
ON/OFF OFF
:25
30/ 60/ 901 180/ 900 s 900 s 19
ON/OFF OFF
:20
Note: While accessing Menu Set-up, waiting for longer than 10 seconds without entering any data ends the set-up operation
automatically
and returns vou to the previous display.
12

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
RECEIVING
SWITCHING POWER ON/OFF
To switch ON your transceiver, turn the PWRNOL
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
[MONI]
and adjust the PWRNOL 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 PWRNOL
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 [F], [MONI].
• The current squelch threshold level appears.
• The default
is "5".
c
APO
3 Turn the ENC/SQL control to select the desired level
(0 to 9).
•
0: Selects lowest threshold level (squelch open).
•
9: Selects highest threshold level.
4 Press any key other than [LAMP] or [MONI].
13

From The N3UJJ.COM Document LibraryFrom The N3UJJ.COM Document Library
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/SOL control; operating becomes easier.
Default (kHz)
Version
TH-22
Canada 5
U.S.A.
Australia
Europe . 12.5
General
1 Press [VFO] to select the VFO.
2 Press [F], [T/CT].
TH-42
25
25
• The current frequency step appears.
14
J
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:
5 kHz
"" )o
10kHz
"' "' 15 kHz
t
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, Call
channel,
and memory channels.