Yaesu Musen 20605X20 Analog Scanning Receiver User Manual part 3
Yaesu Musen Co., Ltd. Analog Scanning Receiver part 3
Contents
- 1. User Manual - part 1
- 2. User Manual - part 2
- 3. User Manual - part 3
- 4. User Manual - part 4
User Manual - part 3

21
Preparation
Preparing the Battery Pack/External Power Supply
Connecting an External Power Supply for Use in Vehicle
The optional external power supply adapter 
with a cigarette lighter plug (SDD-13) allows 
the transceiver to be used in a vehicle�
1  Turn off the transceiver�
2  Insert the plug of the external power 
supply adapter with a cigarette lighter plug 
(SDD-13) in the EXT DC IN jack of the 
transceiver�
3  Insert the cigarette lighter plug of the 
external power supply adapter in the 
cigarette lighter socket of the vehicle�
Cautions
 yThe SDD-13 is compatible with a 12 V DC cigarette lighter socket� Do not connect the SDD-13 to 
the 24 V DC cigarette lighter socket�
 yUse the transceiver at the minimum required transmission power level to prevent overheating�
 yDo not continue transmission for a prolonged period of time� The transceiver may overheat, 
resulting in malfunction or burns�
 yIf you operate the transceiver for 7 hours or longer, it is recommended that you remove the battery 
pack and install the optional battery case (FBA-39)�
 yRecharging the fully-charged battery pack repeatedly can shorten its service life� Be extremely 
careful not to do so when you operate the transceiver when using an external power supply�
 yWhile charging the battery pack, protect the transceiver from water�
 yCharge the battery pack in a place where the ambient temperature is +5 °C to +35 °C (+41 °F to 
+95 °F).
 yIf the terminal or electrode of the battery pack is dirty, the transceiver can malfunction due to poor 
contact, resulting in overheating or rupture� If the terminal or electrode gets dirty, clean it using a dry 
cloth or cotton swab�
Tips
• The battery pack can be charged within approximately 8 hours using the external power supply 
(approximately 8 hours to charge the optional battery pack FNB-102LI)� If the battery pack is 
charged with the transceiver turned on, the charging time increases slightly�
• When the battery pack has been fully charged, charging stops automatically�
• The external power supply can be used with the battery case installed�
•  If you connect the transceiver to the external power supply with the transceiver turned off, 
“CONNECTED TO EXTERNAL POWER” appears on the LCD, and about 20 seconds later 
“BATTERY NOT INSTALLED” appears�
To cigarette lighter socket 
of vehicle
EXT DC IN jack
External power supply
adapter with a cigarette 
lighter plug SDD-13(optional)
T�B�D�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

22
Preparation
Preparing the Battery Pack/External Power Supply
Connecting to an External Power Supply Using a Power Cable
The optional power cable (E-DC-6) allows the transceiver to be connected to an external 
power supply�
1  Turn off the transceiver�
2  Connect the optional external power supply 
cable (E-DC-6) to an external power supply�
 Remarks   •  Connect the red/black wire or white/red 
wire to the positive (+) terminal of the 
external power supply and the black wire 
to the negative (−) terminal.
  •  Set the voltage of the external power 
supply to 12 to 14 V�
3  Insert the plug of the external power supply in 
the EXT DC IN jack of the transceiver�
Cautions
 yWhen you use the transceiver with the external power supply cable (E-DC-6) connected to an 
external power supply, pay attention to the following:
•  The power supply voltage must be between 12 V and 14 V�   
If the voltage exceeds 14 V, the high voltage protection function is activated to disable high-power 
transmission� L3 (2�5 W) is selected automatically to reduce the transmission power� If the voltage 
exceeds 16 V, malfunctions such as damage to the electric circuits of the transceiver may result� 
Take extra care�
•  Connect the red/black wire or white/black wire of the external power supply cable (E-DC-6) to the 
positive (+) terminal of the external power supply and the black wire to the negative (−) terminal.
•  Use an external power supply having sufficient current capacity (3 A or more)�
•  If the transceiver is used with supplied antenna connected, the external power supply can 
malfunction, resulting in a failure� If you use an external power supply, remove the supplied 
antenna and connect an external antenna� Place the external power supply sufficiently away from 
the transceiver�
 yUse the transceiver at the minimum required transmission power level to prevent overheating�
 yDo not continue transmission for a prolonged period� The transceiver may overheat, resulting in 
malfunction or burn�
 yIf you operate the transceiver for 7 hours or longer, it is recommended that you remove the battery 
pack and install the optional battery case (FBA-39)�
 yRecharging the fully-charged battery pack repeatedly can shorten its service life� Be extremely 
careful not to do so when you operate the transceiver using an external power supply�
 yWhile charging the battery pack, protect the transceiver from water�
 yCharge the battery pack in a place where the ambient temperature is +5 °C to +35 °C (+41 °F to 
+95 °F).
 yIf the terminal or electrode of the battery case is dirty, the transceiver may malfunction due to poor 
contact, resulting in overheating or rupture� If the terminal or electrode gets dirty, clean it using a dry 
cloth or cotton swab�
Connect the external
antenna. External power supply
External power supply 
cable E-DC-6
(optional)
T�B�D�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

23
Preparation
Preparing the Battery Pack/External Power Supply
Tips
• The battery pack can be charged within approximately 8 hours using the external power supply 
(approximately 8 hours to charge the optional battery pack FNB-102LI)� If the battery pack is 
charged with the transceiver turned on, the charging time increases slightly�
• The external power supply can be used with the battery case installed�   
If you connect the transceiver to the external power supply with it turned off, “CONNECTED 
TO EXTERNAL POWER” appears on the LCD, and about 20 seconds later, “BATTERY NOT 
INSTALLED” appears�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

24
Preparation
Using a microSD Memory Card
Using a microSD memory card with the transceiver allows the following functions� 
•  Backing up information on the transceiver
•  Saving memory information
•  Saving data other than images
•  Saving GPS log data
•  Saving image data captured with the optional camera-equipped microphone (MH-
85A11U)
•  Saving messages downloaded with the GM function or WIRES-X function
Usable microSD Memory Cards
This transceiver only supports the following capacity of microSD and microSDHD 
memory cards�
• 2GB   • 4GB   • 8GB   • 16GB   • 32GB
Cautions when Using a microSD Memory Card
•  Do not bend or place heavy objects on the microSD memory card�
•  microSD memory cards formatted on other devices may not properly save information 
when used with this transceiver� Format microSD memory cards again with this 
transceiver when using memory cards formatted with another device�
•  When saving data to a microSD memory card, do not remove the microSD memory 
card or turn off the transceiver�
•  Do not insert anything other than microSD memory card into the microSD memory 
card slot of the transceiver�
•  Do not attempt to forcefully remove mounted microSD memory card�
Mounting and Dismounting microSD Memory Card
1  Press and hold   for over 1 second�
  The transceiver will turn off�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

25
Preparation
Using a microSD Memory Card
2  Open the microSD cover on the side of the 
transceiver�
3  Insert the microSD memory card into the card slot 
until you hear a clicking sound (as shown in the 
figure at the right)�
 Cautions    Ensure that the microSD memory card is facing 
the proper direction when inserting it�
   Do not touch the terminal of the microSD memory 
card�
Do not push the microSD
memory card into this space.
4  Close the microSD cover�
5  Press and hold   for over 1 second�
  The transceiver will turn on� When the microSD 
memory card is properly detected,   lights on the 
display�
Tip
Removing the microSD memory card
To remove the microSD memory card, as done in step 3 above, 
push the memory card in until you hear a clicking sound, then 
remove the memory card�
*  Using the micro SD Card Clip makes it easy to remove the 
micro SD memory card�
Caution
Do not turn off the transceiver while the data is being written to 
the microSD memory card� Doing so may corrupt the data�
T�B�D�
T�B�D�
T�B�D�
T�B�D�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

26
Preparation
Using a microSD Memory Card
Formatting a microSD Memory Card
Format a new microSD memory card following the steps below before use�
Caution
Formatting a microSD memory card erases all data saved on it� If you are going to format the 
microSD memory card you are using, be sure to check the data saved on it before formatting�
1  Press and hold   for over 1 second�
  The “SETUP MENU” screen appears�
2 Touch [SD CARD]�
3 Touch [FORMAT]�
  [OK?] appears on the LCD�
4 Touch [OK]�
 Tip    To cancel formatting, select [Cancel]�
   on the LCD blinks and formatting starts�
  When formatting is completed, a beep sounds and 
[Completed] appears on the LCD� T�B�D�
T�B�D�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

27
Basic Operation
Basic Operation
Performing Communication
Try communication using the transceiver in the analog communication mode� Follow the 
procedure below:
Turn on the transceiver
Adjust the Volume Level
Select an Operating Band
Select a Frequency Band
Turn in to a Frequency
Perform Communication
Turning on the Transceiver
1  Press and hold   for over 1 second�
  When the transceiver is turned on for the first time 
after purchase, the call sign input screen appears for 
2 seconds� Then, the alphabet input screen appears�
  From the second time, the opening screen appears 
followed by the frequency screen� T�B�D�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

28
Basic Operation
Performing Communication
2  Input the call sign toggling the alphabet input screen 
and number input screen�
 Supplement   The alphabet input screen can be switched to 
the number input screen by touching [数字記号]�
    The number input screen can be switched to the 
alphabet input screen by touching [ABC]�
3 Press  �
  The call sign is set and the frequencies of both 
A-band and B-band is displayed simultaneously� (
see page xx)
 Supplement   Factory settings are:   
A-band (upper): 145�000 MHz   
B-band (lower): 433�000 MHz 
 Tip    You can change the information such as the power 
supply voltage and the opening message displayed at 
power-on� For example, press and hold   for over 1 
second to enter Set mode and then select [DISPLAY] → 
[9 OPENING MESSAGE] to change the setting�
   In addition, you can also set the transceiver to display 
the reception frequency immediately without displaying 
the opening message (  see page xx)�
 yTurning off the Transceiver
To turn off the transceiver, press and hold   for over 1 
second�
メモリー書き込み中!A1
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

29
Basic Operation
Performing Communication
Adjusting the Volume Level
You can adjust the transceiver volume level for the A-band and B-band separately�
1 Press   to select the band for which you want to 
adjust the volume level�
 Pressing   each time toggles between the 
A-band and B-band�
2  Rotate the VOL knob clockwise/counterclockwise 
to adjust the volume level�
  The [VOL] gauge moves right/left�
 Supplement   If no sound is heard from the speaker, press 
 and then adjust the volume level while 
listening to white noise�
Toggling the Operating Band
Normally, 2 operating bands are displayed on the top half 
and bottom half of the transceiver touch  screen� This is 
called Dual band�
With one of the bands selected, change the frequency 
and radio wave form� The selected band is called 
Operating band� The other band is called Sub-band�
Each time pressing   toggles the operating band� 
Pressing and holding   for over 1 second displays 
only the operating band which is called Mono-band�
On how to toggle operating bands, see the following 
illustrations�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20

30
Basic Operation
Performing Communication
A-band
(operating 
band)
B-band
メモリー書き込み中!A1
Press and hold 
          for over 
1 second 
Press and hold 
          for over 
1 second 
A-band
B-band
(operating 
band)
A-band
Mono-band
double size 
characters
B-band
Mono-band
double size 
characters
Press
Press
T�B�D� T�B�D�
T�B�D�
Application for FCC / IC 
FCC ID: K6620605X20 
IC: 511B-20605X20