Maycom MH-430 Operation Manual

MINI HAND HELD TYPE
UHF TRANSCEIVER

USER'S OPERATION MANUAL

MODEL : MH-430

CONTENTS

PAGE

OPTION SETTING MODE...................................................................

DESCRIPTION OF FEATURES............................................................

-TOP PANEL FEATURES.....................................................................

-SIDE AND BACK PANEL FEATURES.............................................

-FRONT PANEL FEATURES...............................................................

-DISPLAY PANEL FEATURES............................................................

BATTERY PACK INSTRUCTION........................................................

TO RECEIVE............................................................................................

TO TRANSMIT........................................................................................

SPECIFICATION.......................................................................................

CTCSS TONE TABLE............................................................................

OPTION SETTING MODE

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 Time-Out-Timer
If transmitting is continued over than fixed time, this feature is used
to cut off the transmitting compulsorily.

Display of Operating in Time-Out-Time setting mode.

To change the setting time, press the " or " button.

2. Setting of Busy Channel Lock Out
When a signal is receiving at the radio, this feature is used to
prohibit the transmitting.

Display of Operating in Busy Channel Lock Out Setting Mode.

If you press the " or " button in this setting mode, Busy
Channel Lock Out will toggle and the changed contents will appear
on the LCD.
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NOTE : If you press "PTT" button on operating of Busy Channel
Lock Out, error message will appear on the LCD and
your radio will stay in the receiving mode.

3. Setting of TX Delay Option
In the CTCSS Tone Squelch option mode, this feature allows to
keep transmitting mode in order to prevent Squelch tail when the
"PTT" button is released.

Display of TX Delay Option Setting Mode.

If you press the " or " button in this setting mode, TX delay
option will toggle and the changed contents will appear on the LCD.

4. SCAN Delay Time
This feature allows to stop the scanning for the fixed time when a
signal is receiving at the radio during the scanning process after
that scanning process will continue.

Display of Operating SCAN Delay Time Mode

If you press the " or " button in this setting mode, scan time
will delay(or shorten) 1 second per press the button and changed
contents will appear on the LCD.

5. Setting of Power Save mode
This feature allows to increase the useful life of your battery
significantly.

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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.

NOTE : In the option setting mode,
A. If you hold "FUNC" button and then press " or " button,
the next(previous) setting mode will appear on the LCD.
B. If you press the "PTT" 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.

DESCRIPTION OF FEATURES

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 counter-clockwise to turn power off.

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2. Squelch
This control is to cut off or eliminate receiver background noise in
the absence of an incoming signals. For maximum receiver
sensitivity, it is desired that the control be adjusted only to the point
where the receiver background on ambient background noise is
eliminated. The incoming signals that are then received will be
stronger that the background noise.

3. Antenna
This antenna provides good performance given it's overall size.

4. Microphone and Speaker Jack
Jack is for connection of optional speaker microphone accessory.
BTL(Bridge Tied Load) Amplifier is for this radio. If you want to use
External Speaker/MIC for this radio, Ground Devide External
Speaker/MIC should be used.

NOTE : If you use common Ground External Speaker/MIC for this
radio, the radio would be out of order due to burning of
circuit. Therefore, we would like to recommend you to use
our own External Speaker/MIC for this radio. If you want to
use another maker's External Speaker/MIC which you have
for this radio, please ask the shop if you may use your
External Speaker/MIC or not.

Dust Cover : When Speaker/MIC are not being used, this
prevents dirt and moisture from getting inside the radio.

Side and Back Panel Features

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1. Push-To-Talk(PTT) Button
Press the "PTT" button and the transmitter is activated : you can
now send a message. To receive, release the "PTT" button.

2. Function(FUNC) button
This button, when used in conjunction with the buttons in the front
panel, allows for access of each function.
Press and hold "FUNC" button in normal mode(not memory channel
mode and Call channel mode), then two small seven-segments
indicates stored memory channel number. But, if you do not press
"FUNC" button, these segments indicates current transmitting/
receiving channel number.

3. Belt Clip
Allows for easy of carrying while attached to users belt.

4. D.C Jack
Allows for using external D.C Wall Charger.

Front Panel Features

1. MO, Fr/Ch

1) MO(Monitor)
Press and hold the "MO(Monitor)" button in the receiving mode,
and then the Audio will sound until the "MO" button will be
released. If a signal is not correct call in the CTCSS option mode,
the Audio will sound during pressing and holding the "MO" button.
If the "MO" button is pressed over than one second, R/TX
Condition and SCAN Skip Condition will appear on the LCD per one
second. But, they will not appear on the LCD in the setting mode.

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Display of RX Tone.

Display of TX Tone.

Display of SCAN Skip Condition.

2) Fr/Ch(Selection of Frequency or Channel)
If you press the "FUNC + MO(Fr/Ch)" button when Frequency is
displayed on the LCD, Channel No. will appear on the LCD. Press
the "FUNC + MO(Fr/Ch)" button once again, Frequency will appear
on the LCD.

Display of Frequency(RX/TX Channel).

The last 2 small segments will show memoried channel number,
but balance 7 big segments will show RX/TX frequency.

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Display of Channel(RX/TX Channel)

The last 2 small segments will show memoried channel number
and balance 7 big segments will also show RX/TX channel
number.

2. Channel Down()/TS Button

1) Channel Down() button
Press the "" button to arrow to move to a lower Channel than
is currently shown on the LCD.

2) TS(TONE Number Selection) Button
Press "FUNC + DOWN(TS)" button in the receiving mode(not Scan
/Dual Watch Mode). If the CTCSS option Board is installed in the
set, you can enter the Channel RX/TX setting mode. If not,
the error beep tone will sound.

Display of CTCSS RX Tone setting mode

In the above condition, press the "FUNC + or " button to
enter the TX Tone setting mode.

Display of CTCSS TX Tone setting mode

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