Kenwood TH-28A User manual

Shanna
144 MHz FM TRANSCEIVER
TH-28A/28E
430/440
MHz
FM
TRANSCEIVER
-48A/48E
INSTRUCTION
MANUAL
KENWOOD
CORPORATION
©PRINTED
IN
JAPAN
B62-0236-
Ee):
93/4654321
9242111098765432

Models
Covered
In
This
Manual
@ TH-28A:
@ TH-28E:
m@ TH-48A:
m@ TH-48A:
@ TH-48E:
Find It Fast
144MHz FM transceiver
144MHz FM transceiver
(U.K.and European version)
440MHz FM transceiver
(U.S.A.
and
Canadian
version)
430MHz FM transceiver
(Other market)
430MHz FM transceiver
(U.K.and
European
version)
For
quick
access
to
transceiver
features
and
functions,
consult
these
handy
listings:
m@
Contents
(page
3
and
4)
®
Quick
Reference
(page
61
and
62)
Notice to the user:
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
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
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
into
an
outlet
on
a
circuit
different
from
that
to
which
the
receiver
is
connected.
Consult
the
dealer
for
technical
assistance.

CONTENTS
BOCESSORIES | oo. iscicjcs cider Bk pr corte tieas Bec 5
BEFORE OPERATION’ :*.-. 0c. ts: set eee 5
Controls Overview ............eeee eee eee 6
THE BATTERY PACK
1 NiCd Battery Pack (PB-13) ................ 8
2 RECHALGING 6: 0:0acsip sais sie 6 «0s PARQEE REE 8
3 Installing The Battery Pack ............... 8
4 Battery Voltage Level ....................
5 Battery Operating Time
RECEIVER OPERATION
Ti RANI StS os asa dining ee ocean mae 10
2 Selecting Frequency ..............000000 "1
3 Step SizeSelection ..................05. 12
4 Programmable VFO Tuning Limits ......... 14
5 Subband Reception ...................... 14
TRANSMITTER OPERATION
T RO Srensilh. » 6. cos..4nnis. AOI ASE 15
2 Changing Transmitter Output Power ....... 15
3 &X: Stop Functiedsqne temess na peitane 16
AFIS OUt TMG Fk? sos sa Sos dice ete teens 16
USING THE MEMORY
1 Microprocessor Memory Backup .......... 17
2 Entering Memory Data
3 Initializing The Memory
4 Memory Channel ..................000005
5 Memory Contents) .......6..0 ccc aee eset
6 Entering Split Channel Frequencies ........
7 Entering The Call Channel Frequency
8 Recalling Memory Channels ..............
S: MOMORSAHC .as:<ameccasats steep eeeniaouss
SCANNING
Hold/Resume Programming .............+ 22
BEAN: ODTHONS esate. os. 023 aguctaaity aoaaa eee 22
Scanning Memory Channels .............. 23
Locking Out Memory Channels ............ 23
Band SCannlng «..< ssstine p29 dn sede archaic 24
Programmable Band Scan ................ 24
MHzSean. ii3.53.3.0
VFO/Memory Scan ..
CALL/VFO Scan ......
CALL/Memory Scan
V/M/C(VFO/Memory/CALL)
Scan..........
26
REPEATER OPERATION
Hransmitter OFFSETS oo... sone e eect Care oe oe 27
Selecting the Offset Direction ............ 27
Automatic Offset Selection ............... 27
Manual Offset Selection
The Reverse Function
Mone Operationin. <5.6.. 6 6s oes cn 3
Autopatch
Operations
...................,
PRIME MOMONy. $32.8 oo 2/5 soda arsroreteende®
“Soewmnonanaon- bak
ONOaRWNDY =

CTCSS' OPERATION, oo o..c..0 0. so. gecnaryoreaes 33
THE DUAL TONE SQUELCH SYSTEM (DTSS)
TO BPSSICOI NI er tas este at weer 34
2°Using'the:DTSS Function® ©. v0.2... 34
3 Using DTSS with a Repeater .............. 35
PAGING
1 Paging Operation Overview ..............- 36
Paging Code Memory ...............00--
Setting Paging Codes ..................--
Sending Pages (Calling)
Receiving Pages (Wait) ..................
Canceling Signal Squelch
Locking OurCodes ea wereeesce ts
MESSAGE TRANSMISSION AND RECEPTION
1 Message Transmission Modes 42
Using the Message Memory ..............
Message Memory Check ...........--.--5
Message Memory Transmission ..
Message Reception ...............-20005
Receive Message Memory ..............-
ENHANCED RECEIVER FUNCTION
1 The ToneAlert System ...............05- 46
2 Monitor
3 Beep Off
4 PaMp.. 0.2:
5 Key Lock
NOOR WND
Oahwn
POWER SAVER FEATURES
1 The Battery Saver Mode ................. 48
2 Automatic Power Off (APO) ............... 48
CLOCK FUNCTION
HW WANG SUA) o67-:5:6.3)-'5 cise: 5110 estate ae ebzenmn 49
A aMIMOUEUNCTIONy 3.5. <0cc,s viewys a Fenn Coa 49
DURE: OPERATION: 5: 6c5c465 6655.0. RO 51
MAINTENANCE
1 General Information ..................00. 52
BOSONIC Pret a ete os ob sacar panel agaue see eiecs 52
3. (Record Keeping :.5..s5 scs.ncc ces ete Mae 52
TROUBLESHOOTING ....................65 53
ACCESSORIES
1 Installing the CTCSS Unit (TSU-7) ......... 55
2 Memory Expansion Unit (ME-1) ............ 56
3 Programming the SMC-33 Remote Control
Speaker Microphone ................00.
4 Using other microphones
5 Connecting an External Speaker .......... 59
SPEGIFIGATIONS 6 citi vx cacasiarsunnc's sabeiappne 60
QUICIGREEERENCE es ..csnuhsoaacanians 61

ACCESSORIES
Antenna (TH-28A/28E) ............ T90-0444-x
Antenna (TH-48A/48E) ............ T90-0445-x x
Belt Hook
Hand Strap
RUDD Ot CAD a cian iyo: gisn sisiishern ass boas BO9-0329- x x
AC plug (M type only) ............. E19-0254-X x
NiCd Battery Pack(PB-13) .......... W09-0563- x X
Battery Charger(BC-14)
for U.S.A. and Canada (120V)
G(s TPs sas .0 a REI ee as W09-0565- X X
for Europe (220V)
wigibnvee dag os aeacbeeey WO09-0569- x x
for U.K.version (240V)
its Bh cece RB ay rcdhaverere oes WO09-0568- x x
for Oceania (240V)
a ee eee Pe eree WO09-0567- x X
for other market (120/240V)
ROA KOMEN sa fa'ele die Gres WO9-0566- x X
Instruction Manual ................ B62-0236- x Xx
Warranty Card(U.S.A.,Canada,and Europe)
Note
Your transceiver comes with a portable flex
antenna. For fixed transceiver locations, we
recommend that you use a more permanent
antenna installation to help eliminate interference
and improve performance.
BEFORE OPERATION
Thank you for purchasing this KENWOOD
transceiver.
To
get
the
most
out
of
its
many
features,
we
suggest
you
read
this
instruction
manual
carefully,
and
keep
it
handy
for
further
reference.
To get ready to transmit and receive.
Check
the
accessories
list
to
be
sure
everything
you
need has been included in the package.
Charge
the
included
NiCd
battery
pack,
following
the
instructions
completely
before
proceeding.
When
you
have
everything
checked
out
and
charged
you're
ready
to
get
to
the
Receiver
Operation
section
and
get
up
and
running
with
your
new
equipment.
Other
sections
follow
in
a
logical
order
to
help
you
learn
and
use
this
transceiver
to
its
full
potential.
,
CAUTION
The
recommended
transceiver
duty
cycle
is
1
minute
of
transmission
and
3
minutes
of
reception.
Longer
transmissions
or
extended
operation
in
the
HI
power
mode
may
cause
the
back
of
the
transceiver
to
get
warm.
Do
not
place
the
transceiver
where
the
heat
sink
(rear
panel)
might
come
in
contact
with
plastic
or
vinyl
surfaces.

Controls Overview
This transceiver has different key layouts for each
destination. Check the version of your transceiver
first by looking at the following illustration.
Pag orss cress
FM TRANSCEIVER TH-28A 144MHZ
All types except U.K and European version
PAG orss cress
‘CeCe Cor), Gs
FM TRANSCEIVER TH-28E 144MHZ
U.K and Europe version only

This diagram will help you locate the keys, switches,
and knobs you'll need to perform necessary
operations. Please study these controls carefully. By
the time you reach the end of this manual, you will
have had to use each of them many times.
ANTENNA
(PUSH TO TALK
SWITCH)
LAMP KEY
MONITOR KEY
BATTERY PACK
All types except U.K and European version
VOL (VOLUME CONTROL)
SQL (SQUELCH CONTROL)
ANTENNA:
CONNECTOR
DC IN TERMINAL
MICROPHONE JACK
ON AIR
INDICATOR
SPEAKER
HEADPHONE JACK
| _anenna
(PUSH TO TALK
SWITCH)
U.K and Europe version only

THE BATTERY PACK
1 NiCd Battery Pack (PB-13)
You must charge the battery before you can use it. NOTE
It has not been charged at the factory in order to Recharging should be done within an ambient
provide you with the greatest number of charge/ temperature between 5°C ~ 40°C (41°F ~
discharge cycles. It takes several charge/discharge
cycles before the battery pack will operate for its
maximum period. If you store the battery pack for
more than two months, recharge it before use.
104°F). Recharging performed out of this range
may not fully charge the battery.
2 Recharging 3 Installing The Battery Pack
Insert the charge plug from the charger (BC-14) into Insert the battery pack into the transceiver until it
the receptacle on the top of the transceiver. Then locks in place.
plug the charger into the AC line. Do not allow the To remove the battery pack slide the Release button
battery to charge for greater than 15 hours. The to the right and pull the pack down.
useful life and battery performance will be reduced if
you exceed the recommended charge period.
RELEASE button
Transceiver
BC-14
(Illustrations show the U.S.A. version.)

4 Battery Voltage Level
The
meter
indicates
the
relative
battery
voltage
during
transmit.
Recharge
or
replace
the
batteries
when
the
level
reaches
the
low
indicator.
NiCd Battery pack
5
Battery
Operating
Time
(hours)
Fully charged Fully discharged
i—s
=
=
a tj
a a
PB-13 PB-14o0r
DC IN (13.8 V)
Approximate battery condition
Manganese or Alkaline Batteries
Load
6
X
R6
(AA)
manganese
or
alkaline
batteries
in
series
in
the
optional
battery
case(BT-8).
Be
sure
to
observe
the
polarities.
We
recommend
use
of
high
performance
manganese
batteries.
Manganese or Alkaline batteries
New
batteries
Need
to
change
batteries
Approximate battery condition
Transmitter output power
Models
Batteries
H
M
f:
EL
PB-13
5.5
5.5
8
AT:
TH-28A ;
ie
Alkaline
13
15
23 60
Manganese 4
a
ig
23
PB-13
5
5
75
16
TH-48A =
Tiaae
Alkaline
12
14
19
59
Manganese 4
5
7
21
®
6
seconds
transmission,
6
seconds
reception,
48
seconds
reception
with
no
signal
recommended.
AF
output
0.2W/8
ohms.
@ Battery saver function on.
CAUTION
The
display
indicator
flashes
and
the
POWER
switch
will
not
work
when
the
battery
starts
to
go
flat.
When
this
happens,
recharge
or
replace
the
battery.
We
recommend
use
of
the
NiCd
battery
pack
for
long
transmission
or
extended
operation.
Manganese
batteries
(
except
Alkaline
manganese
batteries
)
may
be
used
for
Low
or
EL
position.

RECEIVER OPERATION
1 Getting started
10
Connect the battery pack and the supplied antenna.
Press the POWER switch to turn the transceiver on.
One of the default frequencies should appear on the
display.
TH-28A/E
et meet
(0 0. LLL
a8 8 APO
TH-48A/E
tt. a fee
i. Le
abies
or
t ie mre
it.
LiL
apr
If the display shows incomplete data, or you think the
displayed frequency is wrong, reset the micro-
processor (see page 18 Initializng the Memory).
Rotate the VOL control clockwise until a signal or
noise is heard coming from the speaker.
Rotate the tuning control to selected an open
channel.
Rotate the SQL control clockwise until the noise just
disappears and the BUSY indicator turns off. This
point is known as the Squelch Threshold point.
sel
Most programming procedures mentioned in
| this manual allow a 10 second delay between
steps.
If youwait too long to perform a step the
transceiver will return to the normal frequency
display. If this occurs you will have to begin
the procedure again.

2 Selecting Frequency
1
You have several ways to select frequencies:
m@ By entering a specific frequency via the keyboard
m By using the tuning control
m@ By selecting a memory channel (see page 20)
@ By pressing the CALL key
Direct Keyboard Frequency Entry
You can enter specific frequencies directly into the
transceiver.
We will explain how to enter 145.050 MHz using the
TH-28A/E as an example.
If the transceiver is in the Memory mode or CALL
mode, press the VFO key to select the VFO mode.
2 Press the numeric 4 key. A 4 is entered as the
10MHz digit, and the 1MHz and below digits change
to-—.
ff crore
APO
3 Press numeric keys 5, 0, 5 and 0.
For the
European
version
and
some
other
markets,
you
must
enter
the
1MHz
digit
first.
So,
first
press
numeric
key
5.
IC
(tf.
APO
Next press numeric keys 0 and 5.
How Step Selection Works
The
chart
below
illustrates
the
1
kHz
and
100
Hz
digit
frequencies
that
are
automatically
selected
when
you
enter
specific
keys
for
the
10
kHz
digit,
when
using
the
12.5kHz
or
25
kHz
step
size
10
kHz
Key
Frequency(kHz)
10
kHz
Key
Frequency(kHz)
50
0 00 5
1
12.5
6
62.5
2
25
7
75
3
37.5
8
87.5
4
37.5
9
87.5
"1

12
Notes
1 The transceiver changes frequency after the 1
kHz digits have been entered.
2 If the frequency step is 10 or 20 kHz, the 1kHz
digit becomes zero automatically when you
enter the 10kHz digit.
3 If you press an invalid key, the valid value
nearest to that number is entered.
4 If you do not press a key within 10 seconds, the
normal frequency display returns.
If you press the VFO key during input, the digits
showing — return to the values that appeared
before the direct entry mode was selected.
a
Using the Tuning Control
The tuning control selects frequencies in up or down
sequential steps.
Rotate the tuning control clockwise or
counterclockwise to select the desired operating
frequency.
3 Step Size Selection
nN
The transceiver must be in the VFO mode to select
frequency steps.
To select the desired tuning or scan step size use
the following procedure:
Press the F key momentarily, then press the
MHz/STEP key. The current frequency step size will
be displayed.
Rotate the Tuning control until the desired tuning
step size appears in the display. The frequency step
is indicated in the chart below.
5>10>15—20>12.5->25-5
Press a key other than the LAMP, MONI, or POWER
key.
The displayed step size is set, and the normal
frequency display returns.

Changes in the Displayed Frequency
As you change from one step size to another, the
displayed frequency also changes, as illustrated in
the accompanying charts.
For example, assume you are presently displaying
439.920 MHz at a 20kHz step size. If you were to
change the step size to 12.5kHz, the display would
read 439.925 MHz.
FROM step size 5, 10, 15, or 20
Frequencies
0, 5, 10, 15
20, 25, 30, 35
40, 45, 50, 55
60, 65, 70, 75, 80, 85, 90, 95
To step size 12.5 or 25
Display as
(0)
25
50
75
FROM step size 12.5 or 25
Frequencies
0
125
25
37.5
50
62.5
75
875
To step size 5, 10, 15, or 20
Display as
(0)
10
20
30
50
60
70
80
13

4 Programmable VFO Tuning Limits
3
14
This radio provides the capability of programming the
VFO tuning range, in 1 MHz band segments, as well
a providing a separate programmable band scan
function. (See page 24)
For example you could tell the transceiver that you
only wish to tune the 144.000 MHz and 145.000 MHz
band segment by specifying any frequency within
these two segments.
The Tuning controls would then only tune within
these specific bands. The procedure for specifying
the bands is described below.
Rotate the Tuning control until the desired lower
tuning limit appears on the frequency display.
For example you might want to select the 144 MHz
band and dial up 144.100 MHz.
Press and hold the M key for longer than one
second, then press the 7 key. This selects the lower
frequency limit for the programmable VFO.
Rotate the Tuning control until the desired upper
tuning limit appears in the frequency display.
For example you might want to select the 145 MHz
band and dial up 145.100 MHz.
Press and hold the M key for longer than one
second, then press the 4 key. This selects the
upper frequency limit for the programmable VFO.
5 Toconfirm that the programming was properly
performed rotate the Tuning control. The transceiver
should not go above or below the programmed band
limits.
To clear both programmed limits simultaneously
reset the VFO memory using the procedures
discussed on page 18.
You can reprogram either limit independently by
following the appropriate instructions above.
5 Subband Reception
Press the BAND key.
The subband frequency appears in the display.
You can select the desired subband frequency as
described in Section 2 (selecting frequency: see
page 11).

TRANSMITTER OPERATION
Before you attempt to transmit, attach an antenna
with a low standing wave ratio to the antenna
connector. Failure to provide a proper load may
cause damage to the final amplifier section. Always
check that the frequency is clear before transmitting.
1 To transmit, follow these steps:
1 Use any of the frequency selection methods on page
11 to select an operating frequency.
2 Check the frequency to see if it is occupied before
you transmit.
3 Press the PTT switch. The ON AIR indicator and
battery level meter will appear.
4 Speak into the microphone from the recommended
distance of 5 cm (2 inches). Talking closer or farther
away can result in loss of clarity, an excessively wide
transmit signal, or weak audio.
5 Release the PTT switch to return to the receive
mode. The ON AIR and battery level meter
indicators should go out.
2 Changing Transmitter Output Power
Pressing the LOW key allows you to select 4
different transmitter output power levels. The actual
transmitter output power for this unit depends on the
power supply being used. Indicators will appear on
the display to tell you which level you have selected.
The “E and L” indicators show the Economic Low
power position. Use Economic Low power for line-
of-sight short-distance communication.
The “L” indicators shows the Low power position.
Use Low power for short-distance communication.
15

16
The “M” indicators shows the medium power
position.
No indicator means the high power position has been
selected. Use high power for maximum transmitter
power.
Output Power(watts)
TH-28A/28E | TH-48A/48E
Tae oy a ee hae
PB-13 2-di x29 155. )<1.5-}00:5 | 0.02
Manganese | 3.0| 25] 25] 2.5] 0.5 | 0.02
Battery
External Power
Supply $.0:,|. 2.5 5:0082:5 0.5 | 0.02
(13.8V DC)
3 TX. Stop Function
The
TX
STOP
function
allows
you
to
temporally
disable
the
transceiver
transmit,
preventing
accidental
or
unauthorized
transmission.
Press
the
F
key,
then
press
the
LOW/TX.S
key
to
turn
the
TX
STOP
function
on
or
off.
! mae
fees Hi ee
APO KS
4 Time-Out-Timer
This transceiver has a time-out-timer function to
prevent possible problems caused by continuous
transmission.
This
function
forcibly
stops
continuous
transmission after 10 minutes. When the timer times
out, the transceiver beeps and automatically returns
to the receive mode. Press the PTT switch to
transmit again.
The
time-out-timer
function
cannot
be
turned
on
or
off.

USING THE MEMORY
1 Microprocessor Memory Backup
All memory channel data, CALL channel data, DTSS
codes, message memory, last channel memory data,
and VFO data is backed up in EEPROM. It is not lost
unless you reset the memory.
All other data that you set is retained by a secondary
lithium battery, that will provide memory backup for
about 20 days if you remove the battery pack or
external DC power.
A fully discharged battery will require apploximately
10 hours to reach full charge after installing a NiCd
battery pack or external power.
2 Entering Memory Data
Entering memory data is a simple operation requiring
just a few keystrokes to store all the data you
require.
Entering Normal Channels
Use the numeric keypad to select the desired
receive frequency, offset, and any other information
you desire. If the desired frequency is already on
the display, continue to step 2.
2
Press
the
M
key.
The
memory
indicator
will
flash.
qe {a rm het ee
: atin
wr Od
Use
the
keypad
to
select
any
desired
memory
channel
number
(00~39).
Use
a
two-digit
number,
such
as
02
for
channel
2
or
15
for
channel
15,
to
enter
the
data
in
memory.
4 Press the MR key.
5
The
memory
channel
number
will
turn
off,
indicating
that
the
receiver
data
has
been
properly
stored.
Clearing a Memory Channel
Use
the
following
procedure
to
clear
the
contents
of
an
individual
memory
channel:
Select the memory channel to be cleared.
Press
the
M
key
for
longer
than
one
second,
then
press
the
MR
key.
The
selected
memory
channel
number
is
removed
from
the
display
and
the
data
is
cleared
from
the
memory.
17

3 Initializing The Memory
18
Press and hold the M key and turn on the power to
reset the memory. All the LCD indicators will appear
on the display. Release the M key. This resets all
user programmed data to the factory defaults.
Factory Default Settings
TH-28A_ TH-28E TH-48A_ TH-48E
VFO 430/440
Pealaney 144 Ha 144 ania MHz | 430 MHz
Call Ch i 430/440
an Gnanne! | 144 MHz 144 MH2 MHz \430 Mrz
Frequency
|
25 kHz |
Frequency
Step
5 kHz |12.5 kHz) 25 kHz
E ions 88.5 Hz| 1750 Hz| 88.5 Hz| 1750 Hz
requency
VFO Reset
Press and hold the F key and turn on the POWER
switch to reset the microprocessors VFO memory,
without destroying the memory channel, CLOCK
data, message memory data, automatic dialer DTMF
memory, Programmable SCAN tuning range,
PAGING code, or CALL channel data.
4 Memory Channel
This transceiver provides 40(00~39 channel)
memory channels . Addition of the optional ME-1
(memory expansion unit) will provide from 40-239
additinal memory channels.
5 Memory Contents
Each memory channel can store information as
shown in the chart below.
X =Can be stored in memory
Normal Split
Channel Channel
[ RX frequency x x
TX frequency N/A s<
Tone(CTCSs) frequency x x
Tone (CTCSS) status
ZZ Frequency step x x
Shift status, REV on/off % N/A
DTSS code, DTSS status x x
Note
The number of additional ME-1 memory channels
that are available depends upon wether they are
used as split channels and if alpha numeric
designators are used.

6 Entering Split Channel Frequencies
1
Use the numeric keypad to select the desired
receiver frequency, tone and other information. If the
desired frequency is already on the display, continue
to step 2.
2 Press the M key. The memory indicator will flash.
Use the keypad to select any desired memory
channel number (00~39). For example, use a two
digit number, such as 02 for channel 2, or 15 for
cannel 15, to enter data in memory.
4 Press the MR key.
5 The memory channel number will turn off, indicating
that the receiver data has been properly stored.
Use the numeric keys to enter the desired transmit
frequency.
Press the M key. The memory channel indicator will
flash.
Press and hold the PTT switch and press the MR
key.
The TX frequency is set. The system returns to its
previous state.
Note
You will hear an error sound if you attempt to recall
a memory when nothing is stored in that memory.
Confirming the Contents of the Split Channel
Press the MR key. The programmed receiver
frequency appears on the display with “+” and
“—" offset direction indicators showing that this
channel has an odd split entered.
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8 AP0
Press the F key, then press the REV key, or just the
PTT switch, to check the transmit frequency. The
transmit frequency will appear on the display.
7 Entering The Call Channel Frequency
1 Use the numeric keypad to select the desired
receiver frequency, tone and other information.
2 Press the M key, then press the CALL key within 10
seconds. You have now entered the call channel
frequency.
If entering an odd split channel, continue with steps 3
to 6.
3 Select the desired call channel transmit frequency.
19

4
5
o
=f
20
Press the M key.
Press and hold the PTT switch and press the CALL
key.
Release the PTT switch.
Recalling Memory Channels
Press the MR key.
You can change the memory channel by the
following two methods.
Using the numeric keypad
Select any desired memory channel number
(00~39). For example, use a two digit number, such
as 02 for channel 2, or 15 for cannel 15.
Selecting the three digit memory mode
If you install the optional ME-1, you cannot recall
more than 100 memory channels in the two digits
recall mode (initial states).
You must change the function to three digit recall
mode.
Press and hold the F key for longer than one second
then press the MR key.
2 digit mode (initial state)—>3 digit mode >
1 digit mode—2 digit mode.....
2 Repeat as required until the desired mode has been
selected.
Using theTuning Control
Rotate the tuning control clockwise or
counterclockwise to select the desired Memory
Channel.
9 Memory Shift
Press the F key, then press the VFO key to copy the
contents of a memory or call channel to the VFO
without changing the data in memory. Doing this
allows you to begin tuning at the point specified by
the memory channel data.
Caution
You cannot perform memory shift if the displayed
frequency exceeds the programmable VFO setting
range (see page 14).