Yaesu Musen 10573X20 User Manual
FCC ID: K6610573X20
IC ID: 511B-10573X20
Operating Manual
VXA-300 Operating Manual
Introduction
The Vertex Standard VXA-300 is a compact, stylish, solid hand-held transceiver providing
communication (transmit and receive) capability on the International Aircraft Communication
Band (“COM” band: 118 ~ 136.975 MHz), and it additionally provides VOR and CDI
navigation features on the “NAV” band (108 ~ 117.975 MHz). What’s more, it also is
receiving on the Amateur Radio 144 MHz band.
The VXA-300 provides a 36-mm diameter Loudspeaker which outputs the 0.8 Watts audio
power from the internal speaker, and it also provides an 8.33 kHz synthesize step for the
newly narrow band channel plan.
The VXA-300 includes Temperature and Supply Voltage display with our exclusive Omni-
TM
Glow
monitoring, 8-character Alpha/Numeric Display, 150 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-300 completely. Keep this manual handy, so you may use it for
reference.
NOTE: The VXA-300’s VOR and CDI Navigation features are supplemental aids to
navigation only, and are not intended to be a substitute for accurate (primary) VOR/CDI or
landing service equipment.
display back-light for minimal degradation of your night vision, NOAA weather band
Congratulations!
You now have at your fingertips a valuable communications tool-a Vertex Standard two-way
radio! Rugged, reliable and easy to use, your Vertex Standard radio will keep you in
constant touch with your colleagues for years to come, with negligible maintenance downtime.
Please take a few minutes to read this manual carefully. The information presented here will
allow you to derive maximum performance from your radio, in case questions arise later on.
We’re glad you joined the Vertex Standard team. Call on us anytime, because
communications is our business. Let us help you get your message across.
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Vertex Standard Co., Ltd.
FCC ID: K6610573X20
IC ID: 511B-10573X20
Operating Manual
Important Notice!
FCC RF Exposure Compliance Requirements for Occupational Use Only:
This Radio has been tested and complies with the Federal Communications Commission (FCC) RF
exposure limits for Occupational Use/Controlled exposure environment. In addition, it complies with the
following Standards and Guidelines:
FCC 96-326, Guidelines for Evaluating the Environmental Effects of Radio-Frequency Radiation.
FCC OET Bulletin 65 Edition 97-01 (1997) Supplement C, Evaluating Compliance with FCC Guidelines
for Human Exposure to Radio Frequency Electromagnetic Fields.
ANSI/IEEE C95.1-1992, IEEE Standard for Safety Levels with Respect to Human Exposure to Radio
Frequency Electromagnetic Fields, 3kHz to 300 GHz.
ANSI/IEEE C95.3-1992, IEEE Recommended Practice for the Measurement of Potentially Hazardous
Electromagnetic Fields-RF and Microwave.
This radio is NOT approved for use by the general population in an uncontrolled environment.
This radio is restricted to occupational use, work related operations only where the radio
operator must have the knowledge to control its RF exposure conditions.
When transmitting, hold the radio in a vertical position with its microphone 1 to 2 inches (2.5 to 5
cm) away from your mouth and keep the antenna at least 1 inch (2.5cm) away from your head and
body.
The radio must be used with a maximum operating duty cycle not exceeding 50 %, in typical
Push-to-Talk (PTT) configurations.
DO NOT transmit for more than 50 % of total radio use time (50 % duty cycle). Transmitting more
than 50 % of the time can cause FCC RF exposure compliance requirements to be exceeded.
The radio is transmitting when the red LED on the top of the radio is illuminated. You can cause
the radio to transmit by pressing the PTT button.
Always use Vertex Standard authorized accessories.
Controls & Connectors (Top Panel)
Antenna Jack
This SMA jack accepts the supplied flexible antenna, or another antenna designed to
provide 50 Ω impedance on the Aircraft Communication Band.
MIC/EAR Jack
You may connect the supplied CT-60 Headset Cable or the (optional) MH-44A4B
Speaker/Microphone to this jack.
Never connect 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 Vertex Standard may damage the VXA-300.
POWER/VOLUME (Inner) Knob
Turn this (inner) control clockwise to turn the radio on and to increase the volume.
Counterclockwise rotation into the click-stop will turn the radio off.
Pressing this knob downward momentarily selects the tuning methods among the VFO
(Variable Frequency Oscillator), MR (Memory Recall), BOOK (Pre-Programmed Memories),
and WX (Weather Channel Memories) mode.
Note: The WX mode is available in the USA version only.
DIAL Selector (Outer) Knob
This (outer) 20-position detended rotary switch tunes the operating frequency or selects the
memory channels.
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Vertex Standard Co., Ltd.
FCC ID: K6610573X20
IC ID: 511B-10573X20
Operating Manual
Controls & Connectors (Front Panel)
BUSY/TX Indicator Lamp
This lamp glows green when a signal is being received and red when transmitting.
Loudspeaker
The internal speaker is located in this position.
Microphone
Speak across this opening in a normal voice level while pressing the PTT switch, to transmit.
LCD (Liquid Crystal Display)
The display shows the selected operating conditions as indicated on the next page.
Keypad
Several keys have triple functions.
The primary functions are labeled on the key top (activated by simply pressing the key
momentarily).
The secondary functions are labeled in yellow above the top edge of the key (activated by
pressing the [F] key first, then the indicated key).
The third functions are labeled in black above the top edge of the key (activated by press
and holding the indicated key for 2 second).
These functions are described in detail on page ??.
Battery Pack Latch
Open this latch for battery removal.
Primary Function (Press Key)
[1(DVOR)] Frequency Entry Digit 1 Activates DVOR mode. None
[2(TO)] Frequency Entry Digit 2 Activates “TO” VOR mode. None
[3(FROM)] Frequency Entry Digit 3 Activates “FROM” VOR
[4(CDI)] Frequency Entry Digit 4 Activates Deviation Indicator
[5(TONE)] Frequency Entry Digit 5 Activates Tone Control mode. None
[6(TEMP)] Frequency Entry Digit 6 Displays the Battery Voltage
[7(SPL)] Frequency Entry Digit 7 Activates Split (Duplex)
[8(TIMER)] Frequency Entry Digit 8 Activates the Stop watch
[9(SKIP)] Frequency Entry Digit 9 Allows Skipping of Channel
[0(SQ)] Frequency Entry Digit 0 Adjusts the Squelch threshold
[XFER(LOCK)] Selects Memory Display Type. Activates the Key Lockout
[121.5] Selects Emergency Channel (121.5
MHz).
[USER]* Activates the Automatic Noise Limiter
during AM reception.
[MW(SPL-W)] None Split-Memory “Write”
[SCAN(DW)] Switches the VFO mode “A” and “B.” Activates the Dual Watch
[F] Activates “Secondary” key mode. Cancel the “Secondary” key
Secondary Function
(Press [F] + key)
mode.
mode.
and Current Temperature
inside the transceiver’s case.
mode.
timer.
during Scan.
level.
feature.
None None
None Switches the Tone
Command.
feature.
mode of the [F] key.
Third Function (Press
and Hold key)
None
None
None
None
None
None
None
Selects DVOR Display
Type.
Character of the Tone
Control Circuit.
Memory “Write”
Command.
Activates Scanning.
None
*: The primary and third function of the [USER] key may be customized by user via Menu
mode. See page ?? for details.
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Vertex Standard Co., Ltd.
FCC ID: K6610573X20
IC ID: 511B-10573X20
Operating Manual
Controls & Connectors (Left Side)
PTT (Push To Talk) Switch
Press this button to transmit when you are operating in the COM band. Release this button
to return to the “Receive” mode. See page ?? for details.
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 ?? for details.
Controls & Connectors (Right Side)
EXT DC Jack
When an external 12-Volt DC power source is available, you may connect the (optional) EDC-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-300 directly to a source which exceeds 15.0 Volts DC will result in
damage to the unit.
Before You Begin
Precautions
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.
When making DC connections via the (optional) 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-300 directly to a source which exceeds 15.0 Volts DC will result in damage to
the unit.
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.
Although the VXA-300 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.
Battery Installation and Removal
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 lift the battery upward and out from
the radio while tilting the Belt Clip upward.
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.
Battery Charging
It is necessary to fully charge the Ni-Cd battery before its first use. Follow these procedures:
Install the supplied FNB-64 Ni-Cd battery pack onto the transceiver. Ensure that the
transceiver is switched off.
Plug the NC-?? into the AC line outlet.
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Vertex Standard Co., Ltd.
FCC ID: K6610573X20
IC ID: 511B-10573X20
Operating Manual
Insert the transceiver and battery pack into the NC-??; the antenna jack should be at the
left side when viewing the charger from the front.
If the transceiver and battery pack are inserted correctly, the RED indicator will glow. A
fully-discharged pack will be charged completely in 10 hours.
Important Notes:
The NC-?? is not designed to power the transceiver for operation (reception or
transmission).
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.
If using a charger other than the NC-??, or if using a battery pack other than the FNB-64,
follow the appropriate instructions provided with 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.
Low Battery Indication
As your battery discharges during use, the voltage will gradually become lower. When
the battery voltage reaches 6.0 Volts, the “BATTERY” 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. Vertex Standard
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.
Installing the FBA-25 (option) Alkaline Battery Case
The optional FBA-25 Battery Case allows operation of the VXA-300 using six “AA” size
Alkaline batteries.
When installing batteries, insert the (–) end first, then press in the (+) end so the battery
snaps into place. 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.
Basic Operation
Preliminary Steps
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-300.
Operation Quick Start
To turn the radio on, rotate the (inner) VOLUME knob out of the click-stop.
A channel frequency should appear on the display. If not, press downward (momentarily)
on the VOLUME knob (repeatedly, if necessary) so that “- VFO -”appears on the display,
followed by a channel frequency.
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.
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Vertex Standard Co., Ltd.
FCC ID: K6610573X20
IC ID: 511B-10573X20
Operating Manual
For example, to set 134.35 MHz, press [1] Æ [3] Æ [4] Æ [3] Æ [5].
To set 118.275 MHz, you do not need to press the final “5” in the frequency:
[1] Æ [1] Æ [8] Æ [2] Æ [7].
You may also turn the top panel’s (outer) DIAL selector knob to choose the desired
operating frequency. The channel frequency will appear on the LCD.
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.
To turn the radio off, turn the VOLUME knob fully counter-clockwise into the click stop
position.
Squelch Adjustment
Press the [F] key momentarily, then press the [0(SQ)] key. This instantly recalls Menu
Item 01 “SQL” which is adjusts the threshold level of the squelch circuit.
Rotate the DIAL selector knob to set the squelch threshold (0 to 8) so that the receiver is
just silenced. A higher number indicates that a higher signal level is required in order to
open the squelch.
Press downward on the VOLUME knob to save your new setting.
Press the PTT switch to exit the Menu (“SET”) mode.
Accessing the 121.5 MHz Emergency Frequency
The VXA-300 can quickly access the 121.500 MHz Emergency Frequency. This function
can be activated even when the keypad lock function (described on page ??) is in use.
To access the Emergency Frequency, press the [121.5] key momentarily.
To exit the Emergency Frequency, press downward on the VOLUME knob.
Transmission
To transmit, press and hold the PTT switch. Speak into the microphone area of the front
panel grille in a normal voice level.
To return to the receive mode, release the PTT switch.
Advanced 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, COM or
2-m Amateur bands using the DIAL selector, the Keypad, or the scanner.
MR (Memory Recall)
The MR (Memory Recall) mode of the VXA-300 provides the user with the ability to store
and recall as many as 150 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 ?? for details on creating
alpha/numeric labels.
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 ?? for details.
WX (Weather Channel) Memories (USA version only)
Ten Weather Channels are pre-programmed at the factory. The VXA-300 will
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FCC ID: K6610573X20
IC ID: 511B-10573X20
automatically scan this special bank when it is selected by the user.
Operating Manual
Reception of Weather Channel Broadcasts
The VXA-300 can receive VHF Weather Channel broadcasts, which may assist your flight
planning. The VXA-300 includes a ten-channel auto-search feature, which simplifies access
to Weather Channels when you are in an unfamiliar location.
To receive Weather Channels, press the VOLUME knob (repeatedly, if necessary) to
select the Weather Channel mode. In the Weather Channel mode, “- WX -” will appear
on the display.
The VXA-300 will now scan quickly through the ten standard Weather Channels, and will
stop on the first active station found.
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 the PTT switch re-initiates the
scanning process.
If there are no Weather Channels in your area, the scanner will not stop. Press the
MONITOR button to stop the scanner.
You can also select Weather Channels manually by rotating the DIAL selector knob.
To confirm the current Weather Channel frequency, press the [XFER(LOCK)] key
momentarily. The display changes to frequency indication. Press the [XFER(LOCK)] key
again to return to normal display.
To exit the Weather Channel mode, press the VOLUME knob momentarily to return to
the VFO mode.
Note 1: In the event of extreme weather disturbances, such as storms and hurricanes, the
NOAA (National Oceanic and Atmospheric Administration) sends a weather alert
accompanied by a 1050 Hz tone and subsequent weather report on one of the NOAA
weather channels. You may setup the Alert function when receiving the Weather Alert signal
via Menu Item 20 “WXAF,” if desired. See page ?? for details.
Note 2: The Weather Channel mode memorizes the last Weather Channel you have used,
and will retain this information until the radio is turned off.
(USA version only)
Monitor Key
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.
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.
To return to normal operation, press the MONITOR key momentarily.
ANL (Automatic Noise Limiter) Feature
For reduction of impulse noise, such as that produced by an engine’s ignition system, the
ANL feature may prove helpful. The ANL feature is only activated in the AM mode.
To activate the ANL feature, press the [USER] key momentarily. The “ANL” icon will
appear on the display, and you should observe a reduction in the ignition noise.
To turn the ANL feature off, repeat the above step; the “ANL” icon will disappear from the
display.
Temperature/Battery Voltage Display
The VXA-300 can measure the current temperature inside the transceiver’s case and
current battery voltage.
To display these items, press [F] Æ [6 (TEMP)].
The display will now indicate the current temperature inside the transceiver’s case or
current battery voltage.
Press the VOLUME knob to switch the display between “current temperature” and
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