Yaesu Musen VXA-120 Air Band Transceiver User Manual

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Date Submitted	1999-12-14 00:00:00
Date Available	2000-03-21 00:00:00
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INTRODUCTION
The Yaesu VXA-120 Aviator Pro II is compact, stylish, solid hand-held transceiver providing communicaCOM
tion (transmit and receive) capability on the International Aircraft Communication Band (“COM
COM” band: 118 ~
NAV
136.975 MHz), additionally provides receive on the “NAV
NAV” band (108 ~ 117.975 MHz).
The VXA-120 includes our exclusive two-mode display with upright or inverted for easy viewing when on
your belt, NOAA weather band monitoring capability, 8 character Alpha/Numeric Display, 50 Memory Channels and 100 Book Memory Channels.
We recommend that you read this manual in its entirety, so as to understand the many features of the VXA-120
completely. Keep this manual handy, so you may use it for reference.
VXA-120 AVIATOR PRO II OPERATING MANUAL
CONTROLS & CONNECTORS (TOP PANEL)
Antenna Jack
BUSY/TX Indicator Lamp
This SMA jack accepts thee supplied flexible
antenna, or another antenna designed to provide
50 Ω impedance on the Aircraft Communication
Band.
This lamp glows green when a signal is being
received and red when transmitting.
POWER/VOLUME Knob
Turn this control clockwise to turn the radio on
and to increase the volume. Counterclockwise rotation into the click-stop will turn the radio off.
CHANNEL Selector Knob
This is 20-position detended rotary switch tunes
the operating frequency or selects the memory
channels.
Pressing this knob momentarily selects the tuning methods among VFO (Variable Frequency
Oscillator), MR (Memory Recall), BOOK (PreProgrammed Memories), and WX (Weather
Channel Memories) mode.
LCD (Liquid Crystal Display)
The display shows the selected operating conditions as indicated on the next page.
The display may be changed inverted viewing
via the Menu; see page 29 for details.
VXA-120 A VIATOR P RO II OPERATING MANUAL
CONTROLS & CONNECTORS (LCD DISPLAY)
This icon is the
“Low Battery” indicator, which blinks
when the battery
voltage becomes
too low for proper
operation.
This indicator confirms that the AUTOMATIC NOISE LIMITER
is activated. See
page 17.
This indicator confirms that D U A L
W ATCH is active.
See page 24.
This indicator confirms that the
“Split” (Duplex)
mode is activated.
See page 26.
This icon indicates
that the “Book”
Memory Bank is in
use. See page 14.
This indicator confirms that this
channel will be
skipped during
scan. See page
23.
This indicator confirms that Secondary Key Function is
active. See page 5.
These digits provide frequency or alphanumeric
information about the channel you are using.
VXA-120 AVIATOR PRO II OPERATING MANUAL
CONTROLS & C ONNECTORS (FRONT PANEL)
Loudspeaker
The internal speaker located in this position.
Microphone
Speak across this opening in a normal tone voice
while pressing the PTT switch.
Keypad
Several keys have dual functions. The color of
the label determines the way in which you activate the function:
The white labels represent the primary functions
of the keys (activated by simply pressing the key
momentarily).
The yellow labels represent the secondary functions of the keys (activated by pressing the [F]
key first, then the indicated key).
On the keypad, primary functions (white) are labeled to the left, while the secondary functions
(yellow) are labeled to the right. These functions
are described in detail on the next page.
Battery Pack Latch
Open this latch for battery removal.
VXA-120 A VIATOR P RO II OPERATING MANUAL
CONTROLS & CONNECTORS (KEYPAD )
Primary Function
(Press Key)
Secondary Function
(Press
+)
Primary Function
(Press Key)
Secondary Function
(Press
+)
Primary Function
(Press Key)
Frequency Entry
Digit 1
Frequency Entry
Digit 2
Frequency Entry
Digit 3
Selects Memory Display
Type (page 19)
None
None
None
Locks the Keypad
Frequency Entry
Digit 4
Frequency Entry
Digit 5
Frequency Entry
Digit 6
Selects Emergency
Channel (121.5 MHz)
None
None
None
None
Frequency Entry
Digit 7
Frequency Entry
Digit 8
Frequency Entry
Digit 9
Activates Automatic
Noise Limiter
On/Off Switch
for Keypad Beeper
Allows Skipping of
Channel during Scan
None
Memory “Write”
Command
Frequency Entry
Digit 0
Activates Scanning
Activates “Secondary”
Key mode
Split-Memory “Write”
Command
None
Activates Dual Watch
None
Secondary Function Activates Split (Duplex )
mode
(Press
+)
Primary Function
(Press Key)
Secondary Function
(Press
+)
VXA-120 AVIATOR PRO II OPERATING MANUAL
CONTROLS & CONNECTORS (LEFT SIDE)
PTT (PUSH TO TALK ) Switch
Press this button to transmit when you are operCOM
ating in the “COM
COM” band. Release this button to
return to the “RECEIVE” mode. See page 15.
MONITOR Switch
This button may be pressed to “open” the squelch
manually, allowing you to listen for very weak
signals. Press and hold this button for 2 seconds,
to “open” the squelch continuously. Press this
button again to resume normal (quiet) monitoring. See page 12.
LAMP Switch
Press this switch momentarily, to activate the
back-lighting lamp for the display. Press and hold
this switch for 2 seconds, to activate the backlighting lamp continuously. To turn the lamp off,
press this switch again. The LAMP switch may
be configured in several ways via the Menu; see
page 28 for details.
VXA-120 A VIATOR P RO II OPERATING MANUAL
CONTROLS & CONNECTORS (RIGHT SIDE)
MIC/EAR Jack
You may connect the (optional) CT-60 Headset
Cable or the (optional) MH-44A4B Speaker/Microphone to this jack.
Never connect the any Speaker/Microphone that is not recommended by the
manufacturer. Because these jack connections are
unique using a Speaker/Microphone that is not
specified by Yaesu will damage the VXA-120.
EXT DC Jack
When an external 12-Volt DC power source is
available, you may connect the E-DC-5B External DC Cable here. Do not connect any wire to
this jack if that wire is connected directly to a
28-Volt DC source. Connecting the VXA-120 directly to a source which exceeds 15.0 Volts DC
will result in damage to the unit.
VXA-120 AVIATOR PRO II OPERATING MANUAL
BEFORE YOU BEGIN
Precautions
Battery Installation and Removal
r This apparatus is capable of two-way communication on channels used for critical aviation safety
communications. Therefore, it is important that
this radio be kept away from children or other
unauthorized users at all times.
r When making DC connections via the E-DC-5B
DC cable, be absolutely certain to observe the
proper voltage level and polarity guidelines. Do
not connect this radio directly to any 24 ~ 28
Volt DC source, nor to AC power of any kind.
Connecting the VXA-120 directly to a source
which exceeds 15.0 Volts DC will result in damage to the unit.
r Do not dispose of the Ni-Cd Battery Pack in a
fire. Do not carry a Ni-Cd Battery Pack in your
pocket, where keys or coins could short the terminals. This could create a serious fire/burn danger, and possibly cause damage to the Ni-Cd
pack.
r Although the VXA-120 is designed to be water
resistant, the enclosure is not “waterproof.” Do
not allow the radio to become submersed in water, and do not expose it and/or its Ni-Cd Battery
Pack to water spray under pressure.
¦ To install the battery, hold the transceiver with
your left hand, so your palm is over the speaker
and your thumb is on the top of the Belt Clip.
Insert the battery pack into the battery compartment on the back of the radio while tilting the
Belt Clip outward, then close the Battery Pack
Latch until it locks in place with a “Click.”
¦ To remove the battery, turn the radio off and remove any protective cases. Open the Battery Pack
Latch on the bottom of the radio, then slide the
battery downward and out from the radio while
unfolding the Belt Clip.
Do not attempt to open any of the rechargeable Ni-Cd packs, as personal injury or damage to the Ni-Cd pack could occur if a cell or cells
become accidentally short-circuited.
VXA-120 A VIATOR P RO II OPERATING MANUAL
BEFORE YOU BEGIN
Battery Charging
It is necessary to fully charge the Ni-Cd battery before it’s first use. Follow these procedures:
¦ Install the supplied FNB-V57 Ni-Cd battery pack
onto the transceiver. Ensure that the transceiver
is switched off.
¦ Plug the NC-76 into the AC line outlet.
¦ Insert the battery pack into the NC-76; the antenna jack should be at the left side when viewing the charger from the front.
¦ If the battery pack is inserted correctly, the RED
indicator will glow. A fully-discharged pack will
be charged completely in 15 hours.
Important Notes:
r The NC-76 is not designed to power the transceiver for operation (reception or transmission).
r Do not leave the charger connected to the transceiver for continuous periods in excess of 24
hours. Long term overcharging can degrade the
Ni-Cd battery pack and significantly shorten its
useful life.
r If using a charger other than the NC-76, or if
using a battery pack other than the FNB-V57,
follow the appropriate instructions provided with
VXA-120 AVIATOR PRO II OPERATING MANUAL
the charger/battery. Contact your Dealer if you
have any doubts about the appropriateness of the
particular charger or battery pack you intend to
use.
Must be transceiver
switched off.
To AC line outlet
VXA-120/NC-76
BEFORE YOU BEGIN
Low Battery Indication
¦ As your battery discharges during use, the voltage will gradually become lower. When the battery voltage reaches 5.0 Volts, the “ x ” icon
will blink on the LCD display, indicating that
the battery pack must be recharged before further use.
¦ Avoid recharging Ni-Cd batteries before the
“Low Battery” indicator is observed, as this can
degrade the charge capacity of your Ni-Cd battery pack. Yaesu recommends that you carry an
extra, fully-charged pack with you so you will
not lose communications capability due to a depleted Ni-Cd battery.
This “deep cycling” practice will help to maintain longer overall battery life after many recharging cycles.
10
Installing the FBA-25 (option) Alkaline
Battery Case
The optional FBA-25 Battery Case allows operation of the VXA-120 using six “AA” size Alkaline
batteries.
When installing batteries, insert the (–) end first, then
+) end so the battery snaps into place.
press in the (+
Always replace all six batteries at the same time, paying attention to the polarity indicated inside the case.
The FBA-25 must not be used with rechargeable cells. The FBA-25 does not contain the thermal and over-current protection circuits (provided in the “FNB” series of Ni-Cd Battery Packs) required when utilizing Ni-Cd cells.
VXA-120 A VIATOR P RO II OPERATING MANUAL
OPERATION
Preliminary Steps
Operation Quick Start
¦ Install a charged battery pack onto the transceiver,
as described previously.
¦ Screw the supplied antenna onto the Antenna
jack. Never operate this transceiver without an
antenna connected.
¦ If you have an optional Speaker/Microphone or
headset, we recommend that it not be connected
until you are familiar with the basic operation of
the VXA-120.
r To turn the radio on,
rotate the VOLUME
knob out of the clickstop.
VXA-120 AVIATOR PRO II OPERATING MANUAL
r After three “initialization” beeps are
heard, a channel frequency should appear on the display. If
not, press downward
(momentarily) on the
CHANNEL selector knob (repeatedly, if necessary) so that “ " VFO "” appears on the display,
followed by a channel frequency.
r Directly entering frequencies from the Keypad
is the easiest method if you know the frequency
on which you wish to operate. Just enter the five
digits of the frequency to move to that frequency.
For example, to set 134.35 MHz,
press [1 ] à [3] à [ 4] à [3] à [5].
11
OPERATION
To set 118.275 MHz, you do not need to press
the final “5” in the frequency:
[ 1] à [1] à [8] à [ 2] à [7 ].
r You may also turn
t h e t o p p a n e l ’s
CHANNEL selector
knob to choose the
desired operating frequency. The channel
frequency will appear on the LCD.
r To change frequency
in 1 MHz steps, press
the [F] key momentarily, then rotate the
CHANNEL selector
knob to select the
MHz digit desired.
Press [ F] once more to resume normal channel
selection in 25-kHz steps.
12
r Rotate the VOLUME knob to set the
volume level. If no
signal is present,
press and hold the
MONITOR button
for 2 seconds; background noise will
now be heard, and
you may use this
noise to set the VOLUME knob for the
desired audio level.
Press the MONITOR
button momentarily, to silence the noise and resume normal (quiet) monitoring.
r Press and hold the
LAMP button for 2
seconds, to illuminate the display and
keypad continuously.
To disable the illumination, press the
LAMP button momentarily.
VXA-120 A VIATOR P RO II OPERATING MANUAL
OPERATION
r To turn the radio off, turn the VOLUME knob
fully counter-clockwise into the click stop position.
Accessing the 121.5 MHz Emergency Frequency
The VXA-120 can quickly access the 121.500 MHz
Emergency Frequency. This function can be activated
even when the keypad lock function is in use.
r To access the Emergency Frequency,
press the [121.5] key
momentarily.
r To exit the Emergency Frequency,
press the CHANNEL selector knob.
VXA-120 AVIATOR PRO II OPERATING MANUAL
13
OPERATION
Tuning Methods
Throughout this manual, you will see references to
several different frequency setting methods. Each will
be particularly useful in a particular operating situation, and they are described below:
¦ VFO (Variable Frequency Oscillator)
The VFO is a “tuning
dial” system which allows you to tune
through the NAV or COM bands in 25-kHz steps
using the CHANNEL selector, the Keypad, or
the scanner.
¦ MR (Memory Recall)
The MR (Memory Recall) mode of the VXA120 provides the user
with the ability to store and recall as many as 50
channels in the radio’s main memory bank. These
memory channels may also be labeled by you
with an alpha/numeric name of up to 8 characters in length, to aid in quick identification of
the channel. See page 20 for details on creating
alpha/numeric labels.
14
¦ BOOK (Pre-Programmed) Memories
The Book memories are
pre-programmed, either
at the factory or by your
Dealer (depending on your country’s requirements), typically including the major COM and
NAV band station frequencies used in your area.
The Book memories can be changed by the user.
See page 27 for details.
¦ WX (Weather Channel) Memories
Ten Weather Channels
are pre-programmed at
the factory as appropriate for your country, and the VXA-120 will automatically scan this special bank when it is selected by the user.
VXA-120 A VIATOR P RO II OPERATING MANUAL
OPERATION
Transmission
Reception of Weather Channel Broadcasts
To transmit, press and
hold the PTT switch.
Speak into the microphone area of the front
panel grille in a normal
voice level.
The VXA-120 can receive VHF Weather Channel
broadcasts, which may assist your flight planning.
The VXA-120 includes a ten-channel auto-search
feature, which simplifies access to Weather Channels when you are in an unfamiliar location.
To return to the receive
mode, release the PTT switch.
VXA-120 AVIATOR PRO II OPERATING MANUAL
r To receive Weather
Channels, press the
CHANNEL selector
knob (repeatedly, if
necessary) to select
the Weather Channel
mode. In the Weather
Channel mode, “ " WX "” will appear on the display.
r The VXA-120 will now scan quickly through the
ten standard Weather Channels, and will stop on
the first active station found.
r If there are two or
more weather channels audible in your
area, you may select
the alternate channel(s) by pressing the
PTT switch. Pressing
15
OPERATION
the PTT switch re-initiates the scanning process.
r If there are no
Weather Channels in
your area, the scanner will not stop.
Press the MONITOR
button to stop the
scanner.
r You can also select
Weather Channels
manually by rotating
the CHANNEL selector knob.
r To exit the Weather
Channel mode, press
the CHANNEL selector knob momentarily to return to the
VFO mode.
Note: The Weather Channel mode memorizes the last
Weather Channel you have used, and will retain this
information until the radio is turned off.
r To comfirm the current Weather Channel frequency, press the [
)] key momentarily. The display
changes to frequency
indication. Press the
)] key again
[ (
to return to normal
display.
16
VXA-120 A VIATOR P RO II OPERATING MANUAL
OPERATION
Monitor Key
ANL (Automatic Noise Limiter) Feature
When listening to a very weak signal from an aircraft or ground station, you may observe the signal
disappearing periodically as the incoming signal
strength becomes too weak to override the squelch
threshold setting.
For reduction of impulse noise, such as that produced
by an engine’s ignition system, the ANL feature may
prove helpful.
To disable the squelch
temporarily, press and
hold the MONITOR key
for 2 seconds on the left
side of the radio, just below the PTT button. The
squelch will remain open
and you should have a better chance of hearing weak
signals.
r To activate the ANL
feature, press the
[ANL] key momentarily. The “ ANL ”
icon will appear on
the display, and you
should observe a reduction in the ignition noise.
r To turn the ANL feature off, repeat the above
step; the “ANL” icon will disappear from the display.
To return to normal operation, press the MONITOR
key momentarily.
VXA-120 AVIATOR PRO II OPERATING MANUAL
17
OPERATION
LOCK Function
Beep On/Off
The lock function prevents accidental changes to the
frequency setting and the keypad controls.
The VXA-120’s key/button beeper provides convenient audible feedback whenever a button is pressed.
Each key and button has a different beep pitch, and
each function has a unique beep combination.
r To activate the lock
feature, press [F] à
[ (
)] key.
r In the LOCK mode,
the display will show
“ " LOCK"” when
you rotate the
CHANNEL selector knob, press the CHANNEL
selector knob, or touch a key on the keypad.
r To turn the lock feature off,
)] again.
press [ F] à [ (
r You can still access the 121.500 MHz Emergency
Frequency when the LOCK function is on.
Simply press the [121.5] key momentarily (this
key never locks). Pressing this key also unlocks
the radio.
18
When you are scanning, the beeper will be heard each
time the scanner halts on a busy channel. This may
be distracting in some environments; if you want to
turn the beeper off (or back on again):
r Press [F] à [8 (BEEP)] key; “ BEEP on” will
appear on the LCD.
r Rotate the CHANNEL selector knob
one click to change
the display to
“ BEEP oFF.”
r Press the [8 (BEEP)]
key again to save your new setting and exit to
normal operation.
VXA-120 A VIATOR P RO II OPERATING MANUAL
NOTE
VXA-120 AVIATOR PRO II OPERATING MANUAL
19
MEMORY OPERATION
The VXA-120 provides 50 user-programmable
“Main” memories, labeled “ CH"))! ” through
“ CH")%),” and up to 100 pre-programmed memories, designated “Book” Memories. The “
” icon
appears when “Book” Memory Mode is activated.
The Main memories and “Book” Memories can be
assigned alpha-numeric names of up to eight characters.
Memory System Operation
The VXA-120’s Main Memory system allows the
user to store, label, and recall channel frequencies
which you may want to use frequently. You may store
VFO frequencies, Book Memory frequencies, and/
or Weather Channel frequencies into the Main
Memory system.
20
Memory Storage
r Select the desired frequency in the VFO mode,
or recall the Book Memory channel or Weather
channel to be stored in the Main Memory.
r Press and hold the [ MW (SPL.W )] key for 2
seconds. The display will indicate “ CH"” and a
channel number will blink on the LCD.
r Within five seconds of pressing the [ MW
(SPL.W)] key, rotate the CHANNEL selector
knob to select the desired memory channel number for storage.
In order to prevent writing over memory channels, a bar will appear under the hyphen (located
between “ CH” and the channel number) to indicate a vacant memory channel.
r Now press and hold in the [MW (SPL.W)] key
for 2 seconds; you will now see “;"""""""
"""""""”
on the LCD. To attach an alpha/numeric name
(label) to the memory, proceed to the next step;
otherwise press and hold [MW (SPL.W)] for 2
seconds to save the entry and exit.
r To label a memory with an alpha/numeric name,
the next step is to use the CHANNEL selector
knob to select any of the 48 available characters
(including letters, numbers, and special symbols).
VXA-120 A VIATOR P RO II OPERATING MANUAL
MEMORY OPERATION
When the desired first character appears, press
the CHANNEL selector knob momentarily to
move on to the next character.
r Select succeeding characters in the same manner, pressing the CHANNEL selector knob momentarily after each selection.
r After entering the entire name (eight characters
maximum), press the [ MW (SPL.W)] key for 2
seconds to save all data for the channel and exit.
Note: If you have stored a Weather Channel, the
“ WX"))! ~ WX")!) ” labels utilize the alphanumeric memory, and other labels may not be stored.
Recalling the Memories
r Press the CHANNEL selector knob, repeatedly
if necessary, until “MR” (Memory Recall) appears on the display. In the MR mode, you will
see “ CH"” and the previously selected channel
number appearing on the LCD.
r Rotate the CHANNEL selector knob to select
the desired memory channel.
r You may change the title structure of the Memory
display type among:
1. Channel Indication (sequential Channel Number,
e.g. CH"))!, CH"))@, etc.);
2. Frequency Indication (e.g. 1@@. %))); or
3. Alphanumeric Label (e.g. LAX FSS).
r To change the Memory display title, press the
)] key repeatedly, if necessary, until you
[ (
get the desired display title structure.
r To exit the Memory mode, press the CHANNEL selector knob momentarily to return to the VFO mode.
Alph a-ta g C har
har act
acto r
@ # $ % ^ & * ( A B
C D E F G H I J K L M N
O P Q R S T U V W X Y Z
< > + ; : \ ` y [
| "
VXA-120 AVIATOR PRO II OPERATING MANUAL
Note: In the “Book” Memory mode, you can change
the memory channel in 10 channel steps, press the
[F] key momentarily, then rotate the CHANNEL selector knob. The “ ” icon will show at the right
edge of the display when the 10 channel step tuning
mode is active. Press the [F] key once more to resume normal channel selection in 1 channel step.
21
SCANNING OPERATION
The VXA-120 allows you to scan automatically in
the VFO*, Main Memory, “Book” Memory, or
Weather Channel modes. It pauses on signals encountered, so you can talk to the station(s) on that frequency, if you like.
* In the VFO mode, the automatic scanner is only
available in the COM band (118.000 - 136.975 MHz);
when the scanner reaches the uppermost frequency
in the COM band, it will revert to the bottom end of
the COM band and repeat the scanning process until
you cancel the scanning process.
If you wish to scan in the NAV band (108.000 136.975 MHz), you can do so manually, as described
at the right.
Scanning operation is basically the same in each of
the above modes.
r Press the [SCAN (DW)] key momentarily to start
the automatic scanner upward (toward a higher
frequency or a higher channel number).
r When the scanner encounters a signal, scanning
pauses and the radio remains on that channel until
one second after the signal disappears, after
which scanning will resume.
22
r While the scanner remains paused on a frequency,
the decimal point of the frequency display blinks.
The display and keypad will be illuminated unless the Scan Lamp Feature is turned off.
r To change the scan direction, turn the CHANNEL selector knob one click in the opposite direction.
r To stop the automatic scanner, press the PTT switch
or the CHANNEL selector knob momentarily. You
may also press [SCAN (DW)] key again.
The VXA-120’s automatic scanner is not operational
in the NAV band (108.000 - 117.975 MHz), because
the NAV stations (ILS, etc.) transmit constantly
(thereby causing the scanner to stop repeatedly).
However, you can scan manually in the NAV band,
per the following procedure:
r Press and hold the [ SCAN ( DW)] key to start
the manual scanner. Scanning will continue as
long as the key is depressed.
r Release the [ SCAN ( DW)] key to stop the
manual scanner immediately.
Note: When scanning upward in frequency, when the
frequency reaches the COM Band (118.000 - 136.975
MHz) via manual scanning, the VXA-120 will switch
to the automatic scanner mode.
VXA-120 A VIATOR P RO II OPERATING MANUAL
SCANNING OPERATION
Channel-Skip Scanning
Continuous-carrier stations like ATIS (Automatic
Terminal Information Service) or Weather Broadcast
stations inhibit scanner operation. Since these stations are always active, the scanner will be halted
repeatedly on their channels. Such channels can be
set to be “skipped” during scanning, if you like, so
as not to interfere with automatic channel scanning:
r Recall the Memory Channel to be skipped during scanning.
r Press [F] à [ 9 (SKIP)] key. The “SKIP” icon
will appear in the lower right corner, indicating
that the channel is to be ignored during scanning.
VXA-120 AVIATOR PRO II OPERATING MANUAL
r You can also designate a channel to be skipped
while scanning. When the receiver is halted on a
channel that you wish to skip, press and hold the
[SCAN ( DW)] key for 2 seconds (the “SKIP”
icon will appear next to the channel to be
skipped).
r Later, to re-enable the memory channel for scanning, repeat the first two steps. The “SKIP” icon
will disappear by the channel you have just reenabled.
Note: A memory set to be “skipped” is still accessible for manual memory selection using the CHANNEL selector knob.
23
DUAL WATCH OPERATION
The Dual Watch feature automatically checks for
activity on a “priority” channel* while you are operating on another channel. During Dual Watch operation, the current channel and the Priority channel will
each be polled for a 500 ms interval, as the VXA120 looks for activity on each channel.
r To start Dual Watch, press [F] à [SCAN (DW )].
The “DW” icon will appear on the display.
r While receiving on the “current” channel (not
the Priority channel), you may push the PTT
switch at any time to transmit on that channel.
r When a signal is received on the Priority channel, operation immediately shifts to the Priority
channel, the “DW” icon will blink, and the display and keypad will become illuminated.
24
While receiving on the priority channel, if you
momentarily press the PTT switch, Dual Watch
will be disabled. You may then transmit on the
Priority Channel.
r To stop Dual Watch, press [F] à [ SCAN (DW)]
key.
r If you wish, you may use both the Dual Watch
and Scan features simultaneously. To do this, start
the Dual Watch first, then start the Scanner.
* The “Priority” Channel is defined as the last-used
Memory Channel (when using the VFO mode) or
Memory Channel 1 (when using the Main Memory
or Book Memory modes).
VXA-120 A VIATOR P RO II OPERATING MANUAL
PRIORITY D UAL WATCH OPERATION
Similar to Dual Watch operation (described above),
Priority Dual Watch is an enhanced version which
includes the following additional features:
l The receiving time interval (ratio) between the
current channel and the Priority channel may be
customized via the Menu mode, item PRTM. See
page 28 for details.
l Irrespective of which channel is currently being
received, when the PTT button is pushed transmission will always occur on the Priority channel.
Before initiating Priority Dual Watch, Menu item
DWMD must be set to the “Priority” mode (instead
of “Dual Watch”). See page 28 for details.
VXA-120 AVIATOR PRO II OPERATING MANUAL
r To start Priority Dual Watch, press [F] à [SCAN
(DW)].
The “DW” icon will appear on the display.
r While receiving on the “current” (non-Priority)
channel, pressing the PTT button once causes
the radio to switch to the Priority channel and
cancels Dual Watch. Press the PTT button again
to transmit on the Priority channel.
r When a signal is received on the Priority channel, reception immediately shifts to the Priority
channel, “DW” icon will blink, and the display
and keypad will become illuminated unless the
Scan Lamp Feature is turned off.
While receiving on the priority channel, if you
momentarily press the PTT switch, Priority Dual
Watch will be disabled. You may then transmit
on the Priority Channel.
r To stop Priority Dual Watch, press [F] à [SCAN
(DW)] key.
25
SPLIT OPERATION
The split operation feature allows you to transmit a
call to a Flight Service Station using the COM band
frequencies, while receiving a NAV band station
(such as the ATIS, AWOS etc.). NAV band stations
equipped with this capability typically are shown,
on navigation charts, with the voice calling frequency
in parenthesis above the navigation frequency.
Programming a Transmit Frequency
r Press the CHANNEL selector knob, repeatedly
if necessary, to select the VFO mode.
r Set a NAV band (108.000 - 117.975 MHz) frequency using the CHANNEL selector knob or
keypad.
r Press [ F] à [MW ( SPL.W)] key. The “SPL”
icon will blink, and the transmit frequency will
appear on the display.
r Now set your radio’s transmit frequency, where
the Flight Service Station will be listening for
calls, using the CHANNEL selector knob or keypad.
r Press and hold in the [MW (SPL.W)] key for 2
seconds to save the transmit frequency and return to the NAV band frequency.
26
Note: You have now stored the separate transmit frequency, but you have not yet activated the split-frequency function; go on to the next section.
Operating in the Split Mode
r It is assumed that you have already set the desired NAV band station’s frequencies per the
above instructions.
r Press [ F] à [7 ( SPL)] to turn on the “Split”
function. The “SPL” icon will appear on the display.
r Press and hold in the PTT switch to transmit on
the split transmit frequency.
r Release the PTT switch to return to the receive
mode.
r To disable the “Split” function, press [ F] à [7
(SPL)] again.
Note: A split frequency can be programmed into each
memory channel independently. Set a transmit frequency before programming the memory channel, if
desired. The split function on/off setting can also be
programmed into a memory channel.
VXA-120 A VIATOR P RO II OPERATING MANUAL
FIELD PROGRAMMING MODE
The VXA-120’s Book Memoris also allows the user
to store, label, and recall channel frequencies which
you may want to use frequently while the VXA-120
is in the Field Programming mode.
Memory Storage into the Book Memory
r Press and hold the PTT and LAMP switch while
turning the radio on, to activate the Field Programming Mode.
r Select the desired frequency to be stored in the
Book Memory.
r Press and hold the [ MW(SPL.W)] key for 2 seconds. The display will indicate “BOOK;” and a
channel number will blink on the LCD.
r Wi t h i n f i v e s e c o n d s o f p r e s s i n g t h e
[MW (SPL.W )] key, rotate the CHANNEL selector knob to select the desired memory channel number for storage.
r Now press and hold in the [MW( SPL.W)] key
for 2 seconds; you will now see “ ;"""""""”
on the LCD. To attach an alpha/numeric name
(label) to the memory, proceed to the next step;
otherwise press and hold the [MW(SPL.W)] key
for 2 seconds to save the entry and exit.
VXA-120 AVIATOR PRO II OPERATING MANUAL
r To label a memory with an alpha/numeric name,
the next step is to use the CHANNEL selector
knob to select any of the 48 available characters
(including letters, numbers, and special symbols).
When the desired first character appears, press
down on the CHANNEL selector knob momentarily to move on to the next character.
r Select succeeding characters in the same manner, pressing down on the CHANNEL selector
knob momentarily after each selection.
r After entering the entire name (eight characters
maximum), press the [MW( SPL.W)] key for 2
seconds to save all data for the channel.
r Turn the radio off, then turn the radio back on
again to begin normal operation.
27
MENU (“SET”) MODE
The Menu system allows certain aspects of your
radio’s configuration to be customized for your personal operating convenience. We do not recommend
that any of the default settings be changed, however,
until you are thoroughly familiar with the operation
of the VXA-120.
4. Rotate the CHANNEL
selector knob to change
the setting of the item
(ON to OFF, etc.).
1. Press the [F] key, then
press the CHANNEL
selector knob to activate
the Menu (“SET”)
mode.
5. Press the CHANNEL
selector knob to save
your new setting.
6. If you need to change
more than one Menu
item, repeat steps 2 - 5.
7. Press the PTT switch to
exit the Menu (“SET”)
mode.
2. Rotate the CHANNEL
selector knob to select
the Menu item (feature)
you wish to view and/or
modify.
3. Once you have selected
the desired Menu Item,
press the CHANNEL
selector knob once to
view the current setting
for the item.
28
VXA-120 A VIATOR P RO II OPERATING MANUAL
MENU (“S ET”) MODE
MENU Listing
SQL
A listing of the Menu items available via the SET
mode may be found below.
Function: Squelch Level Setting
Available Values: 0 ~ 8
Default Setting: 3
Select a setting for this Menu item which just silences
the receiver when no signal is present. Use the lowest setting which will keep the receiver quiet between
incoming transmissions.
Menu
Item
SQL
MCLR
RESE
SCNL
BEEP
SQLSquelch Level Setting
Memory Channel Clear
Scan-Resume Mode Setting
Scan Lamp On/Off
Keypad Beeper On/Off
RSAV
Receiver Battery Saver
LAMP
SFT
LCD Illumination Mode
CPU Clock Shift
PRTM
Priority Checking Time
DWMD
POBP
LCD
IMIC
Function
Select the
Dual Watch/Priority Function
Select the Power on Beep
Select the LCD Display Readout
Internal Microphone On/Off
Available
Values
0~8
–
CAR/5
on/oFF
on/oFF
oFF/ABS/
1:1 ~ 1:5
KEY/TGL/5
on/oFF
05/10/15/
20/25/30
KEY
oFF
15
(1.5 sec)
DW/PRI
DW
1/2/3/oFF
NOR/INV
on/oFF
NOR
on
Default
–
CAR
on
on
oFF
MCLR
Function: Memory Channel Clear
To Clear a Memory channel:
1. Select the Menu Item MCLR.
2. Press the CHANNEL selector knob, then rotate
the CHANNEL selector knob to recall the
memory channel to be erased (“ SET xx” will
appear on the display).
3. Press the VOLUME knob, then turn the CHANNEL selector knob one click to change the display to “ CLR xx”.
4. Press and hold the CHANNEL selector knob for
2 seconds to exit.
Important Notice: An “erased” channel cannot be
restored, and “ CH"OO1 ” cannot be erased, as it is
used for “Priority Channel” operation.
VXA-120 AVIATOR PRO II OPERATING MANUAL
29
MENU (“SET”) MODE
RESM
BEEP
Function: Scan-Resume Mode Setting
Available Values: CAR/5
Default Setting: CAR
In the “CAR” (Carrier Drop) mode, the scanner will
remain halted for as long as there is a carrier present
on the channel; after the carrier drops at the end of
the other station’s transmission, the scanning will
resume.
In the “5” (5-Second Pause) mode, the scanner will
halt for five seconds only, after which scanning will
resume (whether or not the other station is still transmitting).
Function: Keypad Beeper On/Off
Available Values: on/oFF
Default Setting: on
If you do a lot of scanning, you may wish to set this
Menu item to “oFF,” as the Beeper will be heard each
time the scanner halts.
SCNL
Function: Scan Lamp On/Off (while paused)
Available Values: on/oFF
Default Setting: on
If you set this function to “on,” the lamp will be illuminated whenever the scanner stops.
30
RSAV
Function: Receive Battery Saver
Available Values: oFF/ABSø /1:1 ~ 1:5
Default Setting: oFF
The setting of 1:5 will promote the greatest conservation of battery capacity, but the receiver’s response
time to incoming calls will be slowed somewhat.
øABS: Automatic Battery Saver, based on activity
on receiver
Note: This feature does not operate during Scan or
Dual Watch.
VXA-120 A VIATOR P RO II OPERATING MANUAL
MENU (“S ET”) MODE
LAMP
DWMD
Function: LCD Illumination Mode
Available Values: KEY/TGL/5
Default Setting: KEY
In the “KEY” mode, the lamp will be activated for 5
seconds when a front panel key is pressed.
In the “TGL” mode, the LAMP switch toggles the
lamp on and off.
In the “5” mode, the LAMP switch activates the
lamp for 5 seconds.
Function: Select the Dual Watch/Priority Function
Available Values: DW/PRI
Default Setting: DW
In the DW mode, the VXA-120 will activate the Dual
Watch feature when you press [F] à [SCAN (DW)].
In the PRI mode, the VXA-120 will activate the Priority feature when you press [F] à [SCAN (DW)].
SFT
Function: CPU Clock Shift
Available Values: on/oFF
Default Setting: oFF
This function is only used to move a spurious response
“birdie” should it fall on a desired frequency. Consult
your Yaesu dealer for details regarding this function.
PRTM
Function: Priority Checking Time
Available Values: 05/10/15/20/25/30 (x0.1 sec)
Default Setting: 15 (1.5 seconds)
This Menu item allows you to define how often the
Priority Channel will be checked for activity.
POBP
Function: Select the Power on Beep
Available Values: 1/2/3/oFF
Default Setting: 1
LCD
Function: Select the LCD Display Readout
Available Values: NOR/INV
Default Setting: NOR
IMIC
Function: Internal Microphone On/Off
Available Values: on/oFF
Default Setting: on
When operate the VXA-120 in noisy area, we recommend that use with the optional MH-44 A4B
Speaker Microphone while this function set to “oFF.”
Note: The Dual Watch Polling time is 500 mS (fixed).
VXA-120 AVIATOR PRO II OPERATING MANUAL
31
SPECIFICATIONS
General
Transmitter
Frequency Range:
TX 118.000 - 136.975 MHz
RX 108.000 - 136.975 MHz
Weather Channels (WX-01 - WX-10)
Channel Spacing:
25 kHz
Emission Type:
TX AM
RX AM & FM
Supply Voltage:
6.0 - 15.0 VDC
Current Consumption:
< 1 µA (power off)
(approx.)
22 mA (battery saver on, saver ratio 1:5)
56 mA (squelch off)
180 mA (receive)
900 mA (transmit 1.0 W Carrier)
Temperature Range: –10° to +60° C
Case Size (WxHxD): 58 x 108.5 x 26.5 mm w/FNB-V57
Weight (approx.):
335 grams
with FNB-V57, antenna, and belt clip
Power Output (@ 7.2 V):
Frequency Stability:
Modulation System:
Spurious Emission:
Int. Microphone Type:
Ext. Mic. Impedance:
Receiver
Available Options
Circuit Type:
IFs:
Sensitivity:
MH-44A4B
FBA-25
NC-73B/C/Uø
E-DC-5B
CT-60
CN-3
Double-conversion superheterodyne
35.4 MHz & 450 kHz
<1 µV
(for 6 dB S/N with 1 kHz, 30 % modulation)
Selectivity:
<8 kHz/–6 dB
Adjacent CH. Selectivity: <25 kHz/–60 dB
AF Output (@7.2 V): 0.4 W @ 8 Ohms, 10 % THD
Specifications are subject to change without notice or obligation.
32
3.5 W (PEP), 1.0 W (Carrier Power)
Better than ±10 ppm (–10 °C to +60 °C)
Low Level Amplitude Modulation
> 60 dB below carrier
Condenser
150 Ohms
ACCESSORIES & OPTIONS
Supplied Accessories
Ni-Cd Battery Pack
Overnight Desktop Charger
Helical Antenna
Operating Manual
Warranty Card
FNB-V57
NC-76B/C/U ø
ATV-7
Speaker Microphone
Alkaline Battery Case
Desktop Rapid Charger
External Power Cable
Headset Cable
Antenna Adapter
ø: “B” suffix is for use with 117 VAC,
“C” suffix is for use with 220-240 VAC, or
“U” suffix is for use with 230 VAC.
VXA-120 A VIATOR P RO II OPERATING MANUAL

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