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

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5 kHz, 6.25 kHz, 10 kHz, 12.5 kHz, 15 kHz, 20 kHz,
25 kHz, 30 kHz, 50 kHz, 100 kHz.
To change the frequency step size:
1Press [MENU] and turn the Tuning control to select
Menu No. 1 (STP).
¥ The current frequency step size appears.
2Press [MENU] and turn the Tuning control to select
your desired frequency step size.
3Press [MENU] to store the setting or [PTT] to cancel.
Note:  If you change to a frequency step size that does not match the
current operating frequency, the transceiver automatically adjusts the
frequency to match the new frequency step size.
The default step size for each model is as follows.
l e d o Me d o c t e k r a Me z i S p e t S . q e r F
) t l u a f e D (
T A 2 K - H T2 K , KzH k 5
2 M , MzH k 5 . 2 1
E 2 K - H TEzH k 5 . 2 1
T E 2 K - H T3EzH k 5 . 2 1
T A 4 K - H T2MzH k 5 2
E 4 K - H TEzH k 5 2
Note:  The market code is printed on the bar-code label of the cartonbox. 
						

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LAMP
To illuminate the display and keys:
Press [LAMP].
¥ If no other key is pressed, the light turns OFF
approximately 5 seconds after releasing [LAMP].
¥ Press any key (including [PTT]) other than [LAMP] while
the display and keys are lit to restart the 5-second timer.
¥ Press [LAMP] while the display and keys are lit to
immediately turn the light OFF.
To keep the light ON continuously:
Press [F], [LAMP].
¥ The light remains ON until you press [F], [LAMP] again.
LOCK FUNCTION
The lock function disables most of the keys to prevent
you from accidentally activating a function.
1Press [F] (1 s).
¥ÒÓ appears when this function is ON.
¥ The following keys cannot be locked:
[LAMP], [MONI/SQL], [PTT], [F] (1 s), [ 
 ] (POWER),
[F] then [LAMP] and [F] then [MONI/SQL].
2Press [F] (1 s) to unlock the keys. 
						

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Note:
uThe Tuning control is also locked.  To unlock the Tuning control
while the Lock function is ON, access Menu No. 30 (ENC)
{below} and select ÒONÓ.
uYou cannot perform the Microprocessor Reset {page 111} while
the Lock function is ON.
uMicrophone PF keys {below} operate normally even if the Lockfunction is ON.
Tuning Control Unlock
While the Lock function is ON, you sometimes may want
to turn the Tuning control to change the frequency.  In
this case, turn the Tuning control unlock function ON.
1Press [MENU].
2Turn the Tuning control to select Menu No. 30
(ENC).
3Press [MENU].
4Turn the Tuning control to select ÒONÓ.
5Press [MENU] to store the setting or [PTT] to cancel.
MICROPHONE PF KEYS (OPTIONAL)
If you have an optional SMC-33 or SMC-34 speaker
microphone, you can access many transceiver settings
without using transceiver keys or controls.  Microphone
keys 1, 2, and 3, located on the top of the microphone,
are programmable with transceiver functions.
The microphone key default assignments are as follows:
Mic [1]:  VFO
Mic [2]:  MR
Mic [3]:  CALL (TH-K2AT/ K4AT)
1750 Hz (TH-K2E/ ET/ K4E) 
						

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Note:
uTurn the transceiver OFF before connecting the optional speaker
microphone.
uWhile Menu No. 31 (PC) is ÓONÒ {page 107} or the Lock function
is ON {page 88}, you cannot program PF keys.
uIf the LOCK switch on the rear of the microphone is ON, youmust move the switch to the OFF position to program the keys.
1Press one of the following key combinations to
reprogram the keys on the speaker microphone.
¥ Press Mic [1]+[  ] (POWER) to reprogram Mic [1].
¥ Press Mic [2]+[ 
 ] (POWER) to reprogram Mic [2].
¥ Press Mic [3]+[ 
 ] (POWER) to reprogram Mic [3].
2Press a key or the key combination you want to
assign to the microphone key.
] Y E K [] Y E K [ + ] F [n o i t c n u F
O F VOF VM re f s n a r T O F V
R MRMNI . M
L L A CLL A CzH 0 5 7 1 / N I . C
P M A LPM A L
3. N O s y a t s p m a L
/ I N O M
L Q S/ I N O M
L Q St n e m t s u j d a h c l e u q S
T T P
1T T Pgn i t t e s r e w o p e g n a h C
U N E MUN E Mes r e v e R
g n i n u T
2
l o r t n o cg n i n u T
2
l o r t n o cn w o D / p U
1  You can press [PTT] to assign a function key to alternate VFO
and Memory Recall Mode.
2 Tuning control (Up or Down) can also be programmed.3  The light stays ON until you press [F], [LAMP] again {page 88}. 
						

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MONITOR
When you are receiving while the squelch function is
ON, weak signals may become intermittent.
If the CTCSS or DCS function is ON, you may want to
disable the squelch function temporarily to monitor the
current channel activities.
In both of these cases, use the Monitor function to
temporarily disable the squelch function.
To activate the Monitor function:
1Press and hold [MONI/SQL].
¥ The speaker is unmuted and you can monitor the
signals.
2Release [MONI/SQL] to return to normal operation.
NARROW BAND FM OPERATION
By default, the transceiver operates in normal FM
(±5 kHz) mode for both transmission and reception.
You can also operate the transceiver in narrow band FM
(±2.5 kHz).
To operate the transceiver in narrow band FM:
1Press [MENU].
2Turn the Tuning control to select Menu No. 29
(FMN).
3Press [MENU].
4Turn the Tuning control to select ÒONÓ.
5Press [MENU] to store the setting or [PTT] to cancel. 
						

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When narrow band FM operation is ON, ÒNÓ appears in
the top right of the LCD.
Note:  You can store the narrow band FM operation status to thememory channels {page 41}.
POWER-ON MESSAGE
You can change the Power-ON Message (a maximum
of 6 characters) when the transceiver is turned ON.
1Press [MENU].
2Turn the Tuning control to select Menu No. 26
(P.ON.MSG).
3Press [MENU].
¥ The current message and entry cursor appear.
¥ The cursor moves to the next digit.
4Turn the Tuning control to select a character.
 ¥ You can enter the following alphanumeric characters:
0 ~ 9, A ~ Z, Ð (hyphen), / (slash) and a space.
5Press [MENU].
¥ The cursor moves to the next digit.
6Repeat steps 4 and 5 to enter up to 6 digits. 
						

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¥ Press [MONI/SQL] to delete the character at the
current cursor position.
¥ If no Power-ON Message is programmed, ÒTH-K2Ó or
ÒTH-K4Ó appears as the Power-ON Message.
7To complete the entry, press [MENU] without
selecting a character.  Otherwise press [PTT] to
cancel the entry.
PROGRAMMABLE VFO
If you want to limit the operating frequencies within a
certain range, program the upper and lower frequency
limits to the programmable VFO parameters.  For
example, if you select 144 MHz for the lower limit and
145 MHz for the upper limit, the tunable range will be
limited from 144.000 MHz to 145.995 MHz.
1Press [VFO].
2Press [MENU].
3Turn the Tuning control to select Menu No. 7
(P.VFO).
¥ The current programmable frequency range for the
band appears.
4Press [MENU].
5Turn the Tuning control to select the lower limit
frequency in MHz.
6Press [MENU] to store the lower limit frequency.  To
cancel, press [PTT]. 
						

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¥ The upper limit frequency blinks.
7Turn the Tuning control to select the upper limit
frequency in MHz.
8Press [MENU] to store the upper limit frequency or
[PTT] to cancel.
Note:
uYou cannot program the 100 kHz or lower digits.uThe upper limit frequency cannot be set lower than the selectedlower limit frequency.
TIME-OUT TIMER
The Time-out Timer limits the time of each transmission.
The built-in Time-out Timer limits each transmission
time to a maximum of 3, 5 or 10 (default) minutes.  Just
before the transceiver stops the transmission, a warning
beep sounds.  This function is necessary to protect the
transceiver from thermal damage and can therefore not
be turned OFF.
1Press [MENU].
2Turn the Tuning control to select Menu No. 23
(TOT).
3Press [MENU].
4Turn the Tuning control to select Ò3Ó, Ò5Ó or Ò10Ó
(default) minutes.
5Press [MENU] to store the setting or [PTT] to cancel. 
						

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Note:  A warning beep sounds even if you select Menu No. 27 (BP)OFF {page 85}.
TX INHIBIT
You can inhibit the transmission to prevent unauthorized
individuals from transmitting, or to eliminate accidental
transmissions while carrying the transceiver.
1Press [MENU].
2Turn the Tuning control to select Menu No. 25 (TXI).
3Press [MENU].
4Turn the Tuning control to select ÒONÓ.
5Press [MENU] to store the setting or [PTT] to cancel.
¥ ÒTX INHÓ appears and an error beep sounds if the
transceiver tries to transmit while TX Inhibit is ON.
TX POWER
To change the transmission output power, press [F],
[PTT].
¥ Each time you press [F], [PTT] the icon cycles from  Þ
 Þ , and then back to .
The output power varies depending on the battery type
and operating voltage.  The table below shows the
approximate output power when the transceiver
operates with different types of battery or DC power
sources. 
						

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y r e t t a B
e p y Tt u p t u O
r e w o P
n o i t c e l e S
) . x o r p p A ( r e w o P t u p t u O
4 1 - T B
) V 0 . 9 (HW5 . 3
MW2 . 1
LW3 . 0
N 3 4 - B P
) V 2 . 7 (HW0 . 5
MW5 . 1
LW5 . 0
N I C D
) V 8 . 3 1 (HW0 . 5
MW5 . 1
LW5 . 0
Note:  If the DC IN voltage exceeds 14.5 V DC and ÒÓ (High Power)
is selected, the ÒÓ icon blinks and the output power is automaticallyreduced to ÒÓ (Medium Power).
VOX (VOICE-OPERATED TRANSMISSION)
VOX eliminates the necessity of manually switching to
the Transmission Mode each time you want to transmit.
The transceiver automatically switches to Transmission
Mode when the VOX circuitry senses that you have
begun speaking into the microphone.
When you operate the VOX function, you must use an
optional microphone (KHS-21) because the internal
speaker and microphone are too near to be used for the
VOX function without using this headset.
To turn the VOX function ON: