Reception - Kenwood TM-221A Instruction Manual

TM-221A/321A/421A/521A U.S.A. version only @ and @ UP/DWN (Up/Down) switches
These switches are used to step the VFO frequency
or Memory Channel up and down. The frequency will
change continuously if the switches are pressed and
held.
@) PTT (Push To Talk) switch
The transceiver will be placed into transmit
whenever this switch is pressed. Operations such as
scanning will be cleared when this switch is pressed.
@) 16-Tone DTMF Keypad (U.S.A. version only)
Used to activate the DTMF encoder. See Section 4-6
REPEATER for additional information on this item.
4-2. RECEPTION
4-2-1. Initial Control Settings 2. Turn on the DC power supply and then press the
1. Connect the power supply and antenna and then POWER switch on the radio; the display will in-
set the witches and controls as follows: dicate a frequency.
3. Adjust the VOL control clockwise until a signal
POWER switch : OFF or noise is heard.
POWER switch of the DC power supply 4. Rotate the TUNING control and select an open
(Fixed Station) : OFF channel. Then turn the SQL control clockwise
VOL control : Fully counterclockwise until the noise just disappears.
SQL control : Fully counterclockwise 5. Select the desired frequency using the TUNING
control or UP/DWN switches on the microphone.
(See Section 4-2-2 Frequency and Memory
Channel Selection.)
lf a signal is received, the BUSY indicator will
turn on and the S-meter will deflect.
To turn off the transceiver, turn off the
; WG o rm Z| transceiver's POWER switch before you turn off
! J ILI is the power supply, or if in a vehicle, before you
mms CC OHenooc IO) 3
=a : stop the engine.
Fully counterclockwise OFF
REV + SCAN CTCSS TONE
Fully counterclockwise
Note:
The TM-221A front panel is used for illustration
purposes.
4 Note the initial factory delivered settings for Fre-
quency, Tone Frequency, Memory Channel and
Frequency Step are shown in the accompanying
table.
TM-221A TM-221ES TM-321A TM-421A TM-421ES TM-521A TM-521E
440.000 MHz
VFO Frequency 144.000 MHz 220.000 MHz | (U.S.A. version)| 430.000 MHz 1240.000 MHz
430.000 MHz
Frequency Step 5 kHz 12.5 kHz 20 kHz 25 kHz
Memory Channel Memory Channel 0
440.000 MHz
Memory Channel 144.000 MHz 220.000 MHz | (U.S.A. version)| 430.000 MHz 1240.000 MHz
430.000 MHz
Tone Frequency 88.5 Hz —— 88.5 Hz oe 88.5 Hz ———
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