Maycom AR-108 Mounting instructions

AR-108
MINI HAND HELD TYPE
AIR / VHF BAND RECEIVER
USER'S OPERATION MANUAL
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

CONTENTS
PAGE
■DESCRIPTION OF FEATURES ........................................................... 4
-DISPLAY PANEL FEATURES ............................................................. 4
-TOP PANEL FEATURES .................................................................... 6
-SIDE AND BACK PANEL FEATURES .................................................7
-FRONT PANEL FEATURES .........................................................….. 8
■OPTION SETTING MODE ..................................................................15
■BATTERY PACK INSTRUCTION ....................................................... 17
■TO RECEIVE ...................................................................................... 18
■SPECIFICATION ................................................................................ 18
Caution : Any changes or modifications in construction of this device
which are not expressly approved by the party responsible for
compliance could void the user's authority to operate the
equipment.
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

●Display Panel Features
1. " " (Function Mode)
Indicates the "FUNC" button has been selected.
2. " DW " (Dual Watch)
Indicates that the "Dual Watch" feature has been activated.
3. " PS " (Power Save)
Indicates that the radio is in the "Battery Save" or "Power Save" mode.
4. " " (Key Lock)
Indicates the "Key Lock" feature has been activated.
5. " " (Beep)
Indicates that "Beep" tone confirmation is on.
6. " " (Memory Mode)
Indicates that Memory Mode operation.
7. Memory channel indicator
Displays the memory channel number (99 memories available).
8. Dot No. 2
Not Used
9. Dot No. 1
This dot is used to display the RX Frequency (Unit : MHz).
10. Channel (Frequency) indicator
Displays Frequency Number.
4
■DESCRIPTION OF FEATURES
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

11. " S-RF " (Signal strength indicator)
The radio incorporates a ten segment incoming signal on the LCD.
When receiving a signal, the meter will indicate how strong the signal is.
A weak signal will be indicated by one or two segments, while a very
strong signal will have 8 to 10 segments.
12. " BAT " (Battery remainder level meter)
Not Used
13. " " (Battery indicator)
Indicates batteries are getting low. If the battery level is lower than the
standard point, Battery Level Indicator will twinkle.
14. " " (Busy)
Indicates that a signal is being received.
5
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

●Top Panel Features
1. Power On/Off, Volume
Turn the Volume switch clockwise to turn power on and set desired
volume. Turn the Volume button anti-clockwise to turn the power off.
2. Squelch
This control is to cut off or eliminate receiver background noise in the
absence of an incoming signal. For maximum receiver sensitivity, it is
suggested that the control be adjusted only to the point where the
receiver background or ambient background noise is eliminated. The
incoming signals that are then received will be stronger than the
background noise.
<Power and Volume>
<Squelch>
3. Antenna
This antenna provides good receiver performance given its overall size.
4. Earphone Jack
Lets the user listen to the conversation in privacy.
Dust Cover : When Earphone is not being used, this prevents dirt and
moisture from getting inside the radio.
Please disregard the primed "MIC" on the dust cover.
6
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

●Side and Back Panel Features
1. MON (Monitor)
Press and hold the "MON (Monitor)" button in the receiving mode to
override squelch control. This is useful when a weak signal is to be
monitored.
2. FUNC(Function) button
This button, when used in conjunction with the buttons on the front panel,
allows for access of each function.
3. Belt Clip
Allows for ease of carrying while attached to user’s belt.
4. DC Jack
Allows for using external DC Wall Charger.
7
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

●Front Panel Features
1. AI/WR button
Press the "AI/WR" button to change between air band and VHF band
alternately. The AR-108 allows you to listen to Air band and VHF band.
Press and release the "AI" button until you come to the band of your
choice. Look at the right hand bottom corner of the LCD, a letter "A" is
shown for air band and a letter "V" is shown for VHF band.
▶Display of the Air Band
▶Display of the VHF Band.
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MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

2. ▼(Channel Down) button
1) ▼(Channel Down) button
Press the "▼" button to move to a lower channel than is currently
shown on the LCD.
2) Left Cursor function button
Frequency Selection by Cursor function ("FUNC + ▼" button). The
desired frequency can be directly entered using the cursor function in
normal and memory mode. The desired frequency however should be
in the allocated frequency range of the receiver. To enter the frequency
directly using cursor function, follow the example:
3) Example of Frequency selection
Frequency desired is 145.4650 MHz on the VHF Band.
- Press the "AI/WR" button till the VHF Band is indicated, then press
the "FUNC + ▲" button, the sixth digit of the frequency display will
start to flash. Now press "▲or ▼" button to set the value
to " 5 ":
- Press the "FUNC + ▲" button, the fifth digit of the frequency display
will start to flash. Now press "▲or ▼" button to set the value
to " 6 ":
- Continue this process for the remaining digits until you have entered
the desired frequency (the first digit of the frequency will not be able to
be changed from the number " 1 ").
- Finish by pressing the "MON" button.
- The same procedure is followed for call and memory channels when
selecting the desired frequency
NOTES : If you have selected a frequency which is above or below the
frequency range allowed, the unit will automatically go to either
the maximum or minimum frequency allowed.
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MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

3. ▲(Channel up) button
1) ▲(Channel Up) button
Press the "▲" button to move to a higher Channel than is currently
shown on the LCD.
2) Right Cursor button
Frequency Selection by Cursor Function ("FUNC + ▲" button) the
procedure for Cursor function using "FUNC + ▲" button is same for
"FUNC + ▼" button. The only difference is that the second digit starts to
flash first. Every time "FUNC +▼" button is pressed the next digit on the
right will start to flash.
4. (Lamp), BP (Beep) Button
1) (Lamp) button
Press the " " button, the lamp will stay on for four seconds, after which
it will turn itself off automatically. If you press another button on the front
cabinet when the lamp is on, the lamp will stay on for four seconds from
that time. If you press the " " button for more than one second, the
lamp will stay on until you press the " " button once again.
2) BP (Beep) button
This feature gives the user an audible confirmation through a short beep
tone that the radio has been turned on. The AR-108 comes with this
feature already turned on. If you would like to deactivate this feature,
press "FUNC + LAMP (BP)" button. To reactivate the "Beep" feature,
repeat the above process. When "Beep" feature is off, the key beep tone
and the error beep tone will not sound.
5. MR (Memory Read), MW (Memory Writing) button
This receiver contains a total of 99 memory locations for each air band
and VHF band where desired frequencies can be programmed by the
user. Programming of the desired frequencies can be carried out in the
following ways.
1) Frequency selection by cursor function
Enter Memory Read mode by pressing the MR (MW) button so the " "
icon appears on the right side of the LCD.
Select the memory location where you wish to store a setting by holding
and pressing "▲or ▼" buttons till the Memory Channel Indicator shows
that location.
Use the cursor functions as described in the previous sections 2 and 3 to
choose the frequency. The current digit of the frequency being set, the
Memory Channel Number and the " " icon.
10
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

When frequency selection has been made, to store in to memory, press
the MR (MW) or "MON" button.
2) While in the Memory Set mode, use up or down key to select the
desired frequency. With this method the up or down key can only
increment or decrement the frequency by the channel step value. The
method is as follows:
Enter Memory Read mode by pressing the MR (MW) button so the " "
icon appears on the right side of the LCD.
Select the memory location where you wish to store a setting by holding
and pressing "▲or ▼" buttons till the Memory Channel Indicator shows
that location.
Enter Memory Set mode by pressing "FUNC + MR (MW)".
The " " icon and channel indicator will start to blink
Change the memory frequency stored within the memory location by
pressing the up or down button to select the desired frequency.
Store it to memory by pressing "MR (MW)" button.
※Scan Skip function in memory mode
While in MR set mode, press "SC" button to select Scan Skip function.
It allows the user to scan or skip a particular memory channel. While in
Scan Skip function, press "▲or ▼" button to switch Scan Skip function
on or off.
▶Display of Scan Skip message
11
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

6. SC(Scan), DW(Dual Watch) Button
1) SC (SCAN) button
To Activate : Press the "SC" button to start the scanning process. The
AR-108 will stop at any active channel.
It will remain on that channel during scan delay time and reactivate
scanning.
- If you want to stop scanning process, simply press the "Monitor" button.
- During the scanning process, the skipped channel will not be scanned.
- d1(dot 1) on the LCD will blink per 0.5 second.
- During the Down(Up) scanning process, press the "▼(▲)" button,
then scanning direction will be changed to Down (Up) scanning process.
- If you press the "FUNC" button at stopping channel during the scan
ning process, this channel will be skipped in the next scanning process.
▶Display of Pass message
NOTE : The memory channels skipped from scanning process are
automatically recovered when the radio is switched off and on
again.
▶Display of EMPTY message
If only one channel will remain due to the skipping of channels from
the scanning process, the process will stop and "EMPTY" message will
appear on the LCD.
NOTE : Other buttons located on the front of the radio will not operate. If
you press these buttons, error beep tone will sound.
12
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

2) DW (Dual Watch) Button
To operate Dual Watch :
(1) Not in the Scan Mode, select the channel in which you want to monitor
which we will refer to as your "A" channel.
(2) Press the "FUNC + SC/DW" button, then "DW" will appear on the
LCD.
(3) Use Up/ Down key to select the "B" channel which you want to
monitor. Once "B" channel has been selected, the radio will begin
its dual watch monitoring.
▶Display of Dual Watch Feature.
To turn off the "Dual Watch" channel, simply press the "FUNC +
SC/DW " button. Note that the radio will return to the "A" channel for
normal operation. If you press the "FUNC + SC/DW" button when a
signal is receiving on the channel "A" or "B", the "Dual Watch" feature
will be turned off, on the "A" or "B". If a signal is being received at A
channel, Unit will stay on channel A until the signal disappears. But, if
a signal is being received at B channel, the unit will switch to A
channel to check the signal of A channel every 3 seconds. Even
though a signal is disappear at A (B) channel, which will be remaining
there to check another receiving signal during scan delay time. After
that A (B) channel will be changed to other channel.
If you press the "▲or ▼" button in dual watch mode, B channel will
move to higher (lower) channel than is currently chosen In dual watch
feature, power save function does not operate.
7. ST(Channel Step), LOCK Option
To enter channel space setting mode press "ST(Channel Step)" button.
This option lets the user select from the following channel steps using
Up or Down button. Channel steps 5KHz, 10KHz, 12.5KHz, 15KHz,
25KHz and 1MHz.
To store the channel step value and enter the normal operational mode
press “ST” button again. Press "FUNC + ST(LOCK)" to lock all the buttons
apart from monitor and function button from taking any action.
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MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

▶Display of Channel Step message.
8. Speaker
If there is any unforeseen fault in the microphone connections the unit
will switch off power to the audio amplifier and it will display "SHORT" to
indicate short circuit.
9. Battery Case
See "Batteries" for installation instruction. (Page 17)
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MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

Press and hold "FUNC" button under the condition of Power off, and then
turn on the radio. To enter each option setting mode, press "FUNC + ▲or ▼
" button.
1. Setting of Power Save mode
This feature allows you to increase the useful life of your battery
significantly.
▶Display of Operating Power save On/Off setting Mode.
If you press the "▲or ▼" button in this setting mode, power save
On/Off will toggle on the LCD.
2. SCAN Delay Time
To select SCAN Delay Time, press "FUNC" and "▲" button in Power Save
mode. The Scan Delay feature allows the scanning process to stop for
the fixed time when a signal is received at the radio. After this time, the
scanning process will continue.
15
■OPTION SETTING MODE
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

▶Display of Operating SCAN Delay Time Mode
If you press the "▲or ▼" button in this setting mode, Scan Delay Time
will Increase (or decrease) 1 second per press of the button and
changed value will appear on the LCD.
NOTE : In the option setting mode,
A. If you hold "FUNC" button and then press "▲or ▼" button, the
next (or previous) setting mode will appear on the LCD.
B. If you press the "Monitor " button, all changed contents will be
stored and the radio will return for normal operation.
C. Other buttons located on the front of the radio will not operate. If
you press these buttons, error beep tone will sound.
16
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

1. Press down the battery lock button on the bottom side of the radio.(①)
2. Open the battery cover on the back side of the radio.(②)
3. Install the battery as like shown.(③)
4. Put on the battery cover.(④)
5. Press the battery lock button upward to lock the battery case.
To supply the power, use the DC charge adapter.
CAUTION : Please use only rechargeable battery with DC charge adapter.
(Do not use dry battery with DC charge adapter)
17
■BATTERY PACK INSTRUCTION
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

Keep the radio turned on and select the channel you want to listen to.
If the Squelch is activated more than 20ms in the receiving mode, BUSY will
appear on the LCD and speaker mute will be removed and the audio on that
channel will be heard through speaker.
1. GENERAL
FREQUENCY ------------------------ AIR BAND :108MHz TO 136.975MHz
VHF BAND : 136MHz TO 180MHz
FREQUENCY GENERATION --- PLL SYNTHESIZER
FREQUENCY STABILITY -------- +/- 10ppm
OPERATING TEMPERATURE -- -10℃TO +55℃
POWER SOURCE ------------------ INT : 3.0V
EXT : 7.0 TO 20V
MODULATION ----------------------- F3E, A3E
IMPEDANCE ------------------------- 50 ohm
DIMENSIONS ------------------------ 58(W) x 85(H) x 26.5(D)mm
WEIGHT ------------------------------- 98.5g, W/O BATTERY
2. RECEIVER SECTION
CIRCUIT TYPE ---------------------- DUAL CONVERSION
SUPERHETERODYNE
IF FREQUENCY -------------------- 1'st IF:21.4MHz 2'nd IF:455KHz
SENSITIVITY ------------------------ FM : 0.25µV FOR 12dB SND
AM : 1µV for 10dB NQ
SELECTIVITY ----------------------- 50dB Min.
S/N RATIO ---------------------------- 40dB Min.
AUDIO OUTPUT @10%THD ---- 120mW 16Ω, BTL
18
■TO RECEIVE
■SPECIFICATION
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING

Home page : http://www.emaycom.com
e-mail : [e-mail]
MANUAL-USER / ERP CODE: 66000444 / English / MAYCOM EUROPE VERSION
MANUAL SIZE: 110 X 190 mm / MATERIAL: ART PAPER(W/O COATING