Kenwood Th-K2at/e, K2e/t, K4at, K4e Transceiver Instruction Manual

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¥ When DTMF TX Hold is activated {page 77}, you do
not need to continuously press [PTT] to remain in
Transmission Mode.  However, Transmission Mode is
retained for only 2 seconds after pressing a key, so if
the next key is not pressed within this time limit, the
transceiver stops transmitting.
DTMF TX Hold (TH-K2AT/ ET/ K4AT only)
This function causes the transceiver to remain in
Transmission Mode for 2 seconds after you release
each key.  So, you can release [PTT] while sending the
DTMF tones.
1Press [MENU] to enter Menu Mode.
2Turn the Tuning control to select Menu No. 34
(DT.H).
3Press [MENU] and turn the Tuning control to select
ÒONÓ.
4Press [MENU] to store the setting or [PTT] to cancel.
AUTOMATIC DIALER
If you use the 10 dedicated memory channels to store
DTMF numbers, you do not need to remember a long
string of digits.
Storing a DTMF Number in Memory
1Press [MENU] to enter Menu Mode.
2Turn the Tuning control to select Menu No. 32
(DTMF.MR).
3Press [MENU].
4Turn the Tuning control to select your desired DTMF
memory channel number from 0 to 9. 
						

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5Press [MENU].
¥ The DTMF code entry display appears and the last
digit blinks.
6Turn the Tuning control to select a DTMF code.
¥ Press [MONI/SQL] to delete the character at the
current cursor position.
¥ On the transceiver display, DTMF code Ò
Ó is
represented by ÒEÓ and Ò#Ó is represented by ÒFÓ
(TH-K2AT/ ET/ K4AT only).
¥ You can also enter a DTMF code using the keypad.
Simply press your desired DTMF codes on the keypad
(TH-K2AT/ ET/ K4AT only).
7Press [MENU] to select the DTMF code and move
the cursor to the next digit.
8Repeat steps 6 and 7 to enter up to 16 digits.
9To complete the entry, press [MENU] without
selecting a DTMF code.
To confirm the stored DTMF number, perform steps 1 to
4 then press [MONI/SQL].  The programmed DTMF
code scrolls through the display without transmitting. 
						

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Transmitting a Stored DTMF Number
1While pressing and holding [PTT], press [MENU].
2Release [MENU] (continue pressing [PTT]), then
turn the Tuning control to select the desired DTMF
memory channel number.
3While still holding [PTT], press [MENU] again to
transmit the selected DTMF tones.
¥ The number stored in the channel scrolls across the
display, accompanied by DTMF tones from the
speaker.
¥ After transmission, the frequency display is restored.
TH-K2AT/ ET/ K4AT only:  If you do not need to confirm the
memory channel contents, press [0] ~ [9] instead of turning
the Tuning control in step 2, to select a channel number.  The
stored DTMF number will be immediately transmitted.  (You
do not have to press [MENU] in step 3.)
Note:  If you select an empty DTMF memory channel and press[MENU], the frequency display is restored. 
						

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Adjusting the DTMF Tone Transmission Speed
This transceiver allows you to configure the DTMF
number transmission speed between Fast (default) and
Slow.  If a repeater cannot respond to the fast speed,
adjust this parameter.
1Press [MENU] to enter Menu Mode.
2Turn the Tuning control to select Menu No. 33
(SPD).
3Press [MENU].
4Turn the Tuning control to select ÒFAÓ (Fast) or ÒSLÓ
(Slow).
¥ The tone duration of FAST is 50 ms and SLOW is
100 ms.  ÒFAÓ (Fast) is the default setting.
5Press [MENU] to store the setting or [PTT] to cancel.
Adjusting the Pause Duration
You can change the pause duration (a space digit)
stored in memory channels.  The default setting is
500 miliseconds.
1Press [MENU] to enter Menu Mode.
2Turn the Tuning control to select Menu No. 35 (PA).
3Press [MENU].
4Turn the Tuning control to select 100, 250,
500 (default), 750, 1000, 1500, 2000 ms.
5Press [MENU] to store the setting.  Otherwise, press
[PTT] to cancel. 
						

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DTMF KEY LOCK
Assuming you have a transceiver with the optional
speaker microphone installed and you are carrying it in
the holder or bag, you sometimes may want to disable
the keypad to avoid accidental DTMF transmission.  In
this case, turn the DTMF Key Lock function ON.
1Press [MENU] to enter Menu Mode.
2Turn the Tuning control to select Menu No. 36
(DT.L).
3Press [MENU].
4Turn the Tuning control to select ÒONÓ.
5Press [MENU] to store the setting or [PTT] to cancel.
When this function is activated, you cannot send DTMF
tones using [MENU] (all models) or DTMF keypad
(TH-K2AT/ ET/ K4AT) during transmission. 
						

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OPERATOR CONVENIENCES
APO (AUTO POWER OFF)
The transceiver switches OFF automatically if no keys
or controls are pressed or adjusted for 30 minutes
(default).  One minute before the transceiver switches
OFF, warning beeps sound for a few seconds and
ÒAPOÓ blinks.
You can select the APO time from OFF (disable), 30
(default), 60, 90, 120, or 180 minutes.
1Press [MENU].
2Turn the Tuning control to select Menu No. 17
(APO).
3Press [MENU].
4Turn the Tuning control to select the APO time from
OFF, 30, 60, 90, 120 or 180 minutes.
5Press [MENU] to store the setting.  Otherwise, press
[PTT] to cancel.
Note:
uAPO does not function while the transceiver is scanning.uThe APO timer starts counting down the time when no key
presses, no control adjustments, and no PC control command
(SP/MIC jack) sequences are detected.
uThe APO warning beep sounds and ÒAPOÓ appears 1 minute
before the transceiver turns OFF.
uThe APO warning beep sounds even if Menu No. 27 (BP){page 85} is set to ÒOFFÓ. 
						

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BATTERY LIFE
Before you operate the transceiver outside using a
battery pack, it is important to know how long the
battery pack will last.  The operating times listed in the
table below are measured under the following cyclic
conditions:
TX: 6 seconds, RX: 6 seconds, Stand-by: 48 seconds
We recommend you carry extra battery packs with you,
in case the battery pack becomes discharged.
y r e t t a B
e p y Tt u p t u O
r e w o P/ e m i T g n i t a r e p O
) . x o r p p A ( s r u o H
T E / E / T A 2 K - H TE / T A 4 K - H T
N 3 4 - B P
) V 2 . 7 (H5. 50. 5
M5. 85. 7
L0. 1 10. 0 1
4 1 - T B
) V 0 . 9 (H0. 40. 3
M0. 80. 7
L5. 0 15. 9
REMAINING BATTERY CAPACITY
You can confirm the remaining battery capacity when
you transmit in low power.
To check the remaining capacity:
1Press [F], [PTT] until Ò
Ó appears.
2Press and hold [PTT].
¥ The bar-graph shows the remaining battery capacity. 
						

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:  High battery power
:  Medium battery power
:  Low battery power
No display :  Recharge or replace the batteries.
3Release [PTT] to exit.
Note:  You may not be able to transmit at high power (ÒÓ position) ifthe battery remaining indicator shows low battery power.
BATTERY SAVER
The Battery Saver extends the operating time of the
transceiver.  It automatically activates when the
squelch is closed and no key is pressed for more than
10 seconds.  To reduce battery consumption, this
function shuts the receiver circuit OFF for the
programmed time, then momentarily turn it back ON to
detect a signal.
To program the receiver shut-off period for the battery
saver:
1Press [MENU].
2Turn the Tuning control to select Menu No. 16 (SAV).
3Press  [MENU].
4Turn the Tuning control to select the receiver shut-
off period from OFF, 0.2, 0.4, 0.6, 0.8, 1.0 (default),
2.0, 3.0, 4.0, and 5.0 seconds.
5Press [MENU] to store the setting or [PTT] to cancel.
Note:
uThe longer the shut-off period, the more you can save on battery
consumption.  However, there is a greater chance of missing a
signal.
uWhen the CTCSS/ DCS code matches during reception, the
battery saver function is turned OFF. 
						

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uWhile the transceiver is communicating in PC Mode {page107},
the Battery Saver does not function.
uBattery Saver does not function while scanning.
BEAT SHIFT
Since the transceiver uses a microprocessor to control
various functions of the transceiver, the CPU clock
oscillatorÕs harmonics or image may appear on some
spots of the reception frequencies {page 121}.  In this
case, turn the Beat Shift function ON.
1Press [MENU].
2Turn the Tuning control to select Menu No. 28 (BS).
3Press [MENU].
4Turn the Tuning control to select ÒONÓ.
5Press [MENU] to store the setting or [PTT] to cancel.
Note:  Beat Shift status can be stored to each Memory channel.
BEEP FUNCTION
The Beep function provides confirmation of entry, error
status, and malfunctions of the transceiver.  We
recommend you leave this function ON in order to detect
erroneous operations and malfunctions.
However, to turn the beep function OFF:
1Press [MENU].
2Turn the Tuning control to select Menu No. 27 (BP).
3Press [MENU].
4Turn the Tuning control to select ÒOFFÓ. 
						

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5Press [MENU] to store the setting or [PTT] to cancel.
The transceiver generates the following warning beeps
even if the beep function is turned OFF.
¥ APO warning beeps {page 82}
¥ DC voltage error beep {page 115}
¥ Weather Alert beep {page 55}
¥ Time-Out Timer warning beep {page 94}
Note:  The beep output level is linked to the VOL control position.
BUSY CHANNEL LOCKOUT
This function is used in order to prevent transmitting on
a channel or frequency that somebody else is currently
using.  When turned ON, an error beep sounds and you
cannot transmit even if you press [PTT].
1Press [MENU] and turn the Tuning control to select
Menu No. 24 (BCL).
2Press [MENU] and turn the Tuning control to select
ÒONÓ or ÒOFFÓ (default).
3Press [MENU] to store the setting or [PTT] to cancel.
FREQUENCY STEP SIZE
Choosing the correct frequency step size is essential in
order to select your exact receive frequency using the
Tuning control.  You can select your desired frequency
step size from: