Yaesu Musen 10653020 VHF Transceiver User Manual FCC ID K6610653020
Yaesu Musen Co., Ltd. VHF Transceiver FCC ID K6610653020
users manual
FCC ID: K6610653020 
IC ID: 511B-10653020 
Operating Manual 
VX-350 Series Operating Manual 
 Controls & Connectors 
・ LED Indicator 
Glows Green:  Monitor on 
Blinking Green:  Busy Channel (or SQL off) 
Glows Red:  Transmitting 
Blinking Red:  Battery Voltage is low 
Yellow:    Receiving a Selective Call 
・ Antenna Jack 
・ Push To Talk (PTT) Switch 
・ Side1 Switch (Case side) 
・ Side2 Switch (Case side) 
・ CH (Channel) Selector 
・ VOL/PWR knob 
・ LCD (LCD version only) 
・ A Key (LCD version only) 
・ B Key (LCD version only) 
・ C Key (LCD version only) 
・ D Key (LCD version only) 
・ MIC/SP Jack (External Mic/Earphone) 
・ Speaker 
・ Internal Microphone 
・ Battery Pack Latch 
 Before You Begin 
Battery Pack 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 titling the Belt Clip outward. 
・ To remove the battery, turn the radio off and remove protective cases. Slide the Battery 
Pack Latch on the bottom of the radio, and then slide the battery downward and out from 
the radio while unfolding the Belt Clip. 
Caution!: Do not attempt to open any of the rechargeable Li-Ion packs, as they could 
explode if accidentally short-circuited. 
Low Battery Indication 
・ As the battery discharges during use, the voltage gradually becomes lower. When the 
battery voltage becomes to low, substitute a freshly charged battery and recharge the 
depleted pack. The TX/BUSY indicator on the top of the radio will blink red when the 
battery voltage is low. 
・ Avoid recharging Li-Ion batteries often with little use between charges, as this can 
degrade the charge capacity. We recommend that you carry an extra, fully-charged pack 
with you so the operational battery may be used until depletion (this “deep cycling” 
technique promotes better long-term battery capacity) 
1/7  Vertex Standard Co., Ltd. 

FCC ID: K6610653020 
IC ID: 511B-10653020 
Operating Manual 
 SAFETY TRANING INFORMATION 
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. 
(!) WARNING: This radio generates RF electromagnetic energy during transmit mode. This radio is 
designed for and classified as Occupational Use Only, meaning it must be used only during the course of 
employment by individuals aware of the hazards, and the ways to minimize such hazards. This radio is not 
intended for use by the General Population in an    uncontrolled environment. 
(!) CAUTION: To ensure that your exposure to RF electromagnetic energy is within the FCC allowable 
limits for occupational use, always adhere to the following guidelines: 
* 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 or by using the VOX headset, model VC-25. 
* DO NOT transmit when the radio is used in Body Worn configuration with the following 
accessory: belt-clip (CLIP-18). 
It must be used ONLY for (1) there is a 4 cm distance from the body during transmitting, (2) 
monitoring purposes, using the speaker only and (3) for carrying purposes. 
*    Always use Vertex Standard authorized accessories. 
The information listed above provides the user with the information needed to make him or her aware of 
RF exposure, and what to do to assure that this radio operates with the FCC RF exposures limits of this 
radio. 
Electromagnetic Interference/Compatibility 
During transmissions, this radio generates RF energy that can possibly cause interference with 
other devices or systems. To avoid such interference, turn off the radio in areas where signs are 
posted to do so. 
Do not operate the transmitter in areas that are sensitive to electromagnetic radiation such as 
hospitals, health care facilities, aircraft, and blasting sites. 
FCC LICENSE INFORMATION 
This radio operates on communications frequencies which are subject to FCC (Federal 
Communications Commission) RUles and Regulations. FCC Rules require that all operators using 
Private Land Mobile radio frequencies obtain a radio license before operating their equipment. 
2/7  Vertex Standard Co., Ltd. 
FCC ID: K6610653020 
IC ID: 511B-10653020 
Operating Manual 
 Operation 
Preliminary Steps 
・ Install a charged battery pack onto the transceiver, as described previously. 
・ Screw the supplied antenna onto the Antenna jack. Never attempt to operate this 
transceiver without an antenna connected. 
・ If you have a Speaker/Microphone, we recommend that it not be connected until you are 
familiar with the basic operation of the VX-350 series. 
Operation Quick Start 
・ To turn the top panel’s VOL/PWR knob clockwise to turn on the radio on. 
・ Turn the top panel’s CH selector knob to choose the desired operating channel. 
・ Rotate the VOL/PWR knob to set the volume level. If no signal is present, press and hold 
in the Soft key assigned to MONOTOR for more than 1 second; background noise will 
now be heard, and you may use this to set the VOL/PWR knob for the desired audio 
level. 
・ Press and hold in the Soft key assigned to MONITOR for more than 1 second (or press 
the MONITOR key twice) to quiet the noise and resume normal (quiet) monitoring. 
・ To transmit, monitor the channel and make sure it is clear. 
THIS IS AN FCC REQUIREMENT! 
・ To transmit, press and hold the PTT switch. Speak into the microphone area of the front 
panel grill (lower right-hand corner) in a normal voice level. To return to the Receive 
mode, release the PTT switch. 
・ If a Speaker/Microphone is available, remove the plastic cap and its two mounting 
screws from the right side of the transceiver, then insert the plug from the 
Speaker/Microphone into the MIC/SP jack; secure the plug using the screw supplied with 
the Speaker/Microphone. Hold the speaker grille up next to your ear while receiving. To 
transmit, press the PTT switch on the Speaker/Microphone, just as you would on the 
main transceiver’s body. 
Note: Save the original plastic cap and its mounting screws. They should be re-installed 
when not using the Speaker/Microphone. 
Key Functions 
The VX-350 series has [side1] key, [side2] key, [A], [B], [C] and [D] function keys, and 
both the LCD version and non-LCD version provide programmable Side 1 and 2 
switches. These “Soft” key functions can be customized (set to other functions), via 
programming by your VERTEX STANDARD dealer, to meet your 
communications/network requirements. Some features may require the purchase and 
installation of optional internal accessories. The possible Soft key programming features 
is illustrated below, and their functions are explained next chapter. For further details, 
contact your VERTEX STANDARD dealer. 
For future reference, check the box next to each function that has been assigned to the 
Soft key on your particular radio, and keep it handy. 
3/7  Vertex Standard Co., Ltd. 

FCC ID: K6610653020 
IC ID: 511B-10653020 
Operating Manual 
 Soft Key (Press / Press and hold) 
Functions  [A]  [B]  [C]  [D]  [Side 1]  [Side 2] 
Monitor  / / / / / / 
Squelch Off  / / / / / / 
Low Power  / / / / / / 
Lock *  / / / / / / 
Lamp *  / / / / / / 
Channel Up *  /  /  /  /  /  / 
Channel Down *  /  /  /  /  /  / 
Scan  / / / / / / 
Follow-Me Scan  / / / / / / 
Dual Watch  / / / / / / 
Talkaround  / / / / / / 
Add/Del *  / / / / / / 
Reset  / / / / / / 
Speed Dial  / / / / / / 
Tx Save Off  /  /  /  /  /  / 
Call 1  / / / / / / 
Call 2  / / / / / / 
Call 3  / / / / / / 
Code Select *  /  /  /  /  /  / 
Code Up *  /  / / / / / 
Code Down *  /  /  /  /  /  / 
Emergency     - /     - /     - /     - /     - /     - / 
ACC 1  / / / / / / 
ACC 2  / / / / / / 
Encryption  / / / / / / 
* LCD version only 
Description of Operating Functions 
Monitor 
Press (or press and hold) the assigned Soft key momentarily to disable the Tone 
squelch. 
Squelch Off 
Press (or press and hold) the assigned Soft key to disable the Noise and Tone squelch. 
Repeatedly press (or press and hold) the assigned Soft key to resume the Noise. 
Low Power 
Press (or press and hold) the assigned Soft key to set the radio’s transmitter to the “Low 
Power” mode, thus extending battery life. Press (or press and hold) the assigned Soft 
key again to return to “High Power” operation when in difficult terrain. 
Lock 
Press (or press and hold) the assigned Soft key to lock the Soft keys (except Lock key); 
thus, the [A], [B], [C] and [D] keys can be disabled to prevent radio settings from being 
disturbed. 
Lamp 
Press (or press and hold) the assigned Soft key to illuminate the LCD for five seconds. 
Channel Up 
Press (or press and hold) the assigned Soft key to increase operating channel. 
4/7  Vertex Standard Co., Ltd. 

FCC ID: K6610653020 
IC ID: 511B-10653020 
Operating Manual 
Channel Down 
Press (or press and hold) the assigned Soft key to decrease operating channel. 
Scan 
The scanning feature is used to monitor multiple channels programmed into the 
transceiver. While scanning, the transceiver will check each channel for the presence of 
a signal, and will stop on a channel signal is present. 
・ To activate scanning: 
Press (or press and hold) the assigned Soft key. 
The scanner will search the channels, looking for active ones; it will pause each time it 
finds a channel on which someone is speaking. 
・ To stop scanning: 
Press (or press and hold) the assigned Soft key. 
Operation will revert to the channel to which the [CH] knob is set. 
Follow-Me Scan 
"Follow-Me" Scan feature checks a User-assigned Priority Channel regularly as you scan 
the other channels. Thus, if only Channels 1, 3, and 5 (of the 8 available channels) are 
designated for "Scanning," the user may nonetheless assign Channel as the 
"User-assigned" Priority Channel via the "Follow-Me" feature. 
Press the assigned Soft key to activate "Follow-Me" scanning, then turn the CH selector 
knob to the channel which you want to designate as the "User-Assigned Priority 
Channel" When the scanner stops on an "Active" channel, the User-assigned Priority 
Channel will automatically be checked every few seconds. 
Dual watch 
The Dual Watch feature is similar to the Scan feature, except that only two channels are 
monitored: The current operating channel; and the “Priority” channel. 
・ To activate Dual Watch: 
Press (or press and hold) the assigned Soft key. 
The scanner will search the two channels; it will pause each time it finds a channel on 
which someone is speaking. 
・ To stop Dual Watch: 
Press (or press and hold) the assigned Soft key. 
Operation will revert to the channel to which the [CH] knob is set. 
Talk Around 
Press (or press and hold) the assigned Soft key to activate the Talk Around feature when 
you are operating on duplex channel systems (separate receive and transmit frequencies, 
utilizing a “repeater” station). The Talk Around feature allows you to bypass the repeater 
station and talk directly to a station that in nearby. This feature has no effect when you 
are operating on “Simplex” channels, where the receive and transmit frequencies are 
already the same. 
When the “TA” function is activated, the “<->” icon will be indicated on the display. 
Note that your dealer may have made provision for “Talk Around” channels by 
programming “repeater” and “Talk Around” frequencies on two adjacent channels. If so, 
the key may be used for one of the other Pre-Programmed Functions. 
Add/Del 
Add/Del feature can be arranged Scan list by the User. 
Press (or press and hold) the assigned Soft keys to delete/restore the current channel 
to/from you’re scanning list. When you delete a current channel, “-SKIP-“ will appear on 
the LCD for one second after pressing the Soft key. When you restore a current channel, 
“-STOP-“ will appear on the LCD for one second after pressing the Soft Key. 
Speed Dial 
Your Dealer may have pre-programmed Auto-Dial telephone number memories into your 
radio. To dial a number, just press (or press and hold) the Dealer-assigned Soft key for 
Speed Dialing. The DTMF tones sent during the dialing sequence will be heard in the 
speaker. 
5/7  Vertex Standard Co., Ltd. 

FCC ID: K6610653020 
IC ID: 511B-10653020 
Operating Manual 
TX Save Off 
Press (or press and hold) the assigned Soft key to disable the Transmit Battery Saver, if 
you are operating in a location where high power is almost always needed. 
The Transmit Battery Saver helps extend battery life by reducing transmit power when a 
very strong signal from an apparently nearly station is being received. Under some 
circumstances, though, your hand-held radio may not be heard well at the other end of 
the communication path, and high power may be necessary at all times. 
Call 1-3/Reset 
When the 2-Tone or 5-Tone selective calling system is enabled, press (or press and hold) 
the assigned Soft key to silence the receiver and reset for another call, when a 
communication is finished. 
Code Select 
Press (or Press and hold) the assigned Soft key to enable the changing the 5-Tone 
Paging code which is recalled by the [Call1] key. 
Code Up, Down 
Press (or Press and hold) the assigned Soft key to switch to a higher (or lower) paging 
code number for the 5-Tone Paging System. 
Emergency 
The VX-350 series includes an “Emergency” feature, which may be useful, if you have 
someone monitoring on the same frequency as your transceiver’s channel. For further 
details contact your VERTEX STANDARD dealer. 
ACC 1 and 2 
When the optional unit is installed, these functions are various uses. 
Encryption 
When the voice scrambler feature is enabled, pressing the assigned Soft key of the 
“Encryption” toggles the scrambler “on” and “off”. 
 ARTS (Auto Range Transpond System: LCD version only) 
This system is designed to inform you when you and another ARTS-equipped station are 
within communication range. 
During ARTS operation, your radio automatically transmits for about 1 second every 55 
seconds in an attempt to shake hands with the other station. 
If you have out of range for more than two minutes, your radio senses that no signal has 
been receives, a ringing beeper will sound, and “IN RANGE” will appear on the LCD. If you 
subsequently move back into range, as soon as the other station transmits, your beeper will 
sound and “OUT RANGE” will appear on the LCD. 
6/7  Vertex Standard Co., Ltd. 

FCC ID: K6610653020 
IC ID: 511B-10653020 
Operating Manual 
 Accessories & Options 
FNB-V95LI                7.4V 2000mAh Li-Ion Battery Pack 
FNB-V96LI                7.4V 2000mAh Li-Ion Battery Pack 
VAC-300 (CD-34+PA-42B)   Desktop Rapid Charger  
VAC-6300                  6-Unit Multi Charger  
VCM-2                    Mobile Mounting Bracket for VAC-300  
MH-45B4B                 Speaker/Microphone  
MH-360S                 Speaker/Microphone  
MH-450S                 Speaker/Microphone  
VC-25                     VOX Headset  
FVP-25    DTMF Pager Unit 
FVP-35        Encryption Unit (Rolling code voice scrambler) 
FVP-36    Encryption Unit 
VME-100      ANI encoder Unit 
ATV-8A    Rubber Antenna, 134-151 MHz 
ATV-8B    Rubber Antenna, 150-163 MHz 
ATV-8C    Rubber Antenna, 161-174 MHz 
ATV-6XL       Rubber Antenna, 134-174 MHz, Untuned 
ATU-6A    Rubber Antenna, 400-430 MHz 
ATU-6B    Rubber Antenna, 420-450 MHz 
ATU-6C    Rubber Antenna, 440-470 MHz 
ATU-6D    Rubber Antenna, 450-490 MHz 
ATU-6F    Rubber Antenna, 485-520 MHz 
FIF-10A    USB Programming Interface 
 Part 15.21: Changes or modifications to this device not expressly approved by Vertex 
Standard could void the user’s authorization to operate this device. 
7/7  Vertex Standard Co., Ltd.