NAVICOM RT-300 Operating instructions

VHF Marine Radio
RT- 003
INSTALLATION
AND OPERATION GUIDE
Navicom plaisance: Z.A. des Boutries, 78700 Conflans Ste Honorine
Tel: [phone] Fax: [phone]
Navicom Pro: 3, rue J. Cugnot, Z.A.C Petit Guelen, 29000 Quimper
Tel: [phone] Fax: [phone]

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TABLE OF CONTENTS
Equipment Description…………………………………....……….…..…2
Introduction….…………………………………..………..………………..2
Safety Information……………………………………………….………..3
Using The Radio…………………………………………....…….…….…3
Display...………………………………………………………….……......3
Function And Location Of The Controls……………………….…….….4
Basic Operation………………………………………..……….…........…4
Turning On/Off Your Transceiver……………………………….……….5
Adjusting Squelch…………………………………...…...…………….…5
Selecting High/Low Power or Lock keypad………………...............…5
Selecting a Channel………………………………………………………5
Transmitting and Receiving………………………………………………5
Scanning Features………………………………………………………..6
Adding Channels to Memory………………………………………........7
Using the Monitor Modes………………………………………….……..7
Dual Watch…………………………………………………………....…...7
Tri Watch……………………………………………………………...…...8
Resetting the Radio……………………………………………………....8
Using the Belt Clip………………………………………………..…......9
Using Your Battery............................................................................9
Technical Specifications……...…………………………………..…….10
Frequency Charts…….…………………………………………......11

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Equipment Description
INTRODUCTION
Your hand-held marine VHF radio RT300 represents the state-
of-the-art in high-tech engineering. Designed for international
operation. Thisallows you to transmit and receive on all international
channels in the VHF marine band, as assigned by the in ternational
Union (ITU). This unit is a quality piece of electronic equipment,
skillfully constructed with the finest components.It is approved with
commercial-grade standards to give you clear, reliable communication.
Your radio is designed for many years of reliable, trouble-free
performance. It is under control of a microprocessor resulting in
enhanced features and performance. The microprocessor controls
not only the marine band tuning but also dual watch, memory
channels, and a host of other useful features.
Your radio has the following features:
Channel 16 Switch -------- provides quick access to channel 16, the
universal marine frequently used channel.
PLL (Phase Lock Loop) Controlled Circuitry ---- Provides accurate
and stable channel selection.
Squelch Adjustment ----------------------- help eliminate noise between
transmissions.
Key Lock ----------- lets you lock the keypad in order to prevent the
controls from accidental pressing.
High/Low Power Selection ---- lets you save power by selecting a
suitable transmitting power for long or short distances.
Battery Level Indicator ---- shows the battery condition.

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Backlit LCD Display -------- allows you to operate the transceiver in
dark environment.
Memory Channels ---- lets you store channels as memory channels.
DW/TRI ---- lets you to select DW/normal mode or TRI/normal mode.
We recommend you record your radio’s serial
number is on the transceiver’s back panel.
number here. This
Serial Number_______________________
SAFETY INFORMATION
Your hand-held marine VHF 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 exp-
osure conditions.
1. 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.
2. The radio must be used with a maximum operating duty cycle
not exceeding 50%, in typical Push-to-Talk (Manual PTT) co-
nfigurations.
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 "TX" icon on the LCD splay.
You can cause the radio to transmit by pressing the PTT button.

USING YOUR RADIO
DISPLAY
Your radio comes with a multifunctional display.
Scan mode indicator
Primary channel indicator
Weather station alarm on
indicator
Weather station indicator
Memory channel indicator
Receiving indicator
ATIS on indicator
USA band indicator
International channel
indicator
Canada channel indicator
Transmiting indicator
Dual watch mode
indicator
Tri-wath mode indicator
Signal level indicator
Key locked indicator
Squelch level indicator
Channel No. indicator
High power transmitting
indicator
Low power transmitting
indicator
This channel only receive
not transmit indicator
This channel can receive
and transmit by same
frequency
Battery indicator
4

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FUNCTION AND LOCATION OF THE CONTROLS
BASIC OPERATION
Before operating your radio, please install 4 "AA" size battery
cells into the main unit.
Antenna Power/Volum knob
PTT key
CH 16 Key
Channel up
Channel down
SQL/MONI Key
DW/TRI Key
SCAN/MEMO Key
BAND Key
HI/LO/LOCK Key
CHG/Mic/Speaker jack

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Turning On/Off Your Radio
Rotate Power/volume knob to turn the radio on or off with an
indicating voice of click. And adjust the volume to a comfortable level.
Adjusting Squelch
Press and release the SQL key to enter squelch mode,press the
to adjust squelch level. Press and release the SQL key again to leave
Squelch mode.
Squelch is used to eliminate static and background noise and allows
for silent operation of your RT300 until a transmission is received.
If the squelch is too high, only the strongest transmissions can be
heard, and when too low, intermittent static and noise are heard.
Selecting High/Low Power or Lock keypad
Press and release this key to toggle the transmit power between high
and low. When the unit is operating at low power, “Lo” appears on
LCD and “Hi” appears on LCD when operating at high power.
You also can lock your radio keypad to avoid accidental pressing of
keys by activating the key lock. Pressing and holding Hi/Lo-Lock
button key lock icon will appear on LCD if it is enabled. The fun-
ction is effective to all keys except PTT and Hi/Lo-Lock buttons.
Selecting Channels
Press the /
/
(UP/DOWN) button to scroll through the available
channels.
Note: Not all channel numbers are available in INT bands.
Transmitting and Receiving
Press and hold the Push-To-Talk (PTT) key to transmit on the
selected channel, then release to receive. The TX indicator appears
while transmitting.

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Scanning Features
Your RT300 is equipped with three types of scan options: All
Scan, Saved(Memory) Scan and Priority Scan. If there are no
channels in memory, the default is All Scan. This function
automatically searches for transmissions on the channel set being
scanned. If a TX signal is received, the scan stops on the receiving
channel as long as it is present and the SCAN indicator flashes. If the
signal is lost for five seconds, the radio resumes scanning. During the
Scan Modes:
Press the Channel /(UP/DOWN) button to change the scan
direction. UP increments the channel while DOWN decrements it.
Press and release the SCAN button to terminate the SCAN mode.
DW/TRI button do not function and sound an error beep if pressed.
Note: Scan modes are disabled when the ATIS operation is active.
All Scan
Press and release the SCAN button when no channels are stored in
memory to activate the All Scan function. The SCAN indicator
appears on the LCD during All Scan. In All Scan mode, all channels
in the channel set are scanned in sequence, assuming no channels
have been stored in memory. After the last channel number has been
scanned, the cycle repeats.
Saved (Memory) Scan
Press and release the SCAN button when there is at least one
channel in memory to activate the Saved Scan function. In Saved
Scan Mode, the SAVED and SCAN indicators appear on the LCD. In
Saved Scan mode, only the channels that have been saved in
memory are scanned in sequence. After the last saved channel
number has been scanned, the cycle repeats.

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Adding Channels to Memory
Your RT300 can store any channel (including Private Channels).
The stored channels are the ones scanned in the Saved (Memory)
Scan mode.
To Add Channels to Memory
1. During normal operation mode, use the UP or DOWN key to select
the desired channel for programming.
2. Press and hold the SCAN / MEM key for 3 seconds.
The "M" icon appears to indicate the current channel has been
saved in memory. Any number of channels can be saved as memory
channels.
To Delete Channels from Memory
1. During the normal mode, use the UP or DOWN key to select the
channel to be deleted.
2. Press and hold the
SCAN / MEM key for 3 seconds.
The selected channel is deleted from memory.
Using the Monitor Modes
The Watch Modes monitor the programmed Priority Channel and
other user selected channel(s). The watch is halted when activity is
detected on a monitored channel. Your RT300 is equipped with
2 types of monitor operations: Dual Watch and Tri Watch.
Note: Monitor modes are disabled when the ATIS operation is active.
Dual Watch
Press and release the DW/TRI button to activate the Dual Watch
mode. The "Du" indicator appears on t he LCD. Dual Watch monitors
the current working channel and Channel 16 in cycle. Dual Watch is
demonstrated in the figure to the left; the sample working channel is
CH 72.

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Press and release the DW/TRI button to terminate Dual Watch and
return to the previous working channel.
Press and hold the DW/TRI button to terminate Dual Watch mode
and go into Tri Watch mode.
Press and release the 16 button to terminate Dual Watch mode and
switch to the Priority channel.
Note: During Dual Watch mode, the SCAN and Channel / (UP/DOWN)
utton are inactive and sounds an error beep if pressed.b
Tri Watch
Press and hold the DW/TRI key for 3 seconds to activate Tri Watch
mode. The TRI indicator appears on the LCD. Tri Watch monitors in
cycle Channel 16, the current working channel and the channel you
have set as the Favourite (PLUS) Channel. Tri Watch is
demonstrated in the figure to the left; the sample working channel is
CH 72.
Press and release the DW/TRI button to terminate Tri Watch and
return to the previous working channel.
Press and release the 16 button to terminate Tri Watch mode and
switch to the Priority Channel.
Note: During Tri Watch Mode, the SCAN, and Channel / (UP/DOWN)
eys are inactive and sounds an error beep if pressed.
k
Resetting your Radio
You can reset many radio settings back to their factory defaults, this
will:
• Erase any channels stored in memory
• Return to International channels, if another mode is selected
• Only For US version
• Return power settings to their original state
To perform the reset:
1. Turn the radio OFF.
2. Simultaneously press and hold the SCAN &DW buttons.
3. While continuing to hold these keys, power the radio ON.
The LCD remains blank for 2 seconds, and then the unit switches to
channel 16.

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Using the Batteries
When the battery level is low, Please replace the batteries.Before
replacing the batteries, the volume control must be rotated fully
counterclockwise, until a click is heard, to turn the power OFF. You
can replace the old batteries just with 4 new AA size battery cells.
1. Lift up the lockclip and removed Battery Door.
2. If the ALKALINE or Ni-MH batteries supplied are used (optional),
you can recharge the radio via the wall adapter (optional), to start the
charging.
3.Please connect the AC wall adapter to a standard wall socket and
insert the adapter plug into the CHG/MIC/SPK Jack on the top of the
radio. After 12 ~ 14 hrs, the batteries will be fully charged.
"AA"SIZE
"AA"SIZE
"AA"SIZE
"AA"SIZE

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Using the Belt Clip
The supplied belt clip lets you easily, Attach the belt clip to
the radio as illastrated below:
Note: The Ni-MH batteries and AC adapter are the optional accessories
of the radio. The charging can not stop itself without prevention even
when the batteries have been fully charged. Do not forget to remove
the adapter from the radio when the radio is fully charged.
Don't overcherge the batteries for more than 48 hrs.otherwise the
batteries will be damaged.

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TECHNICAL SPECIFICATIONS
Channels…………………………………..All International Channels
Frequency Method………………………….………….Phase Lock Loop
Frequency Range…………………………..TX 156.025~157.425 MHz
RX 156.300~162.000 MHz
Power Supply………………………..…………………..………4xAA
Operating Temperature……………………….....-15℃to +55℃
Dimensions (HWD)………………. 123mm(H)*60mm(W)*37mm(D)
Weight (without Battery)…….….................................................. 190g
TRANSMITTER
Power Output……………….………0.8 or 5 Watts (Switch Selectable)
Modulation Type……………………………………….…….…...…….FM
Hum and Noise Attenuation……………………………….……..…40dB
Audio Distortion.................................………........…........................5%
Spurious Suppression....................................…………….........-36dBm
RECEIVER
Sensitivity at 12dB Sinad...........................…………...….....0.25 V
S/N Ratio (20dB)...............................…....……………………….0.8 V
Squelch Sensitivity.......…………...…........Threshold -10dB V(EMF)
Adjacent Channel Rejection...................................……..……….. 70dB
Audio Power Output………………………………280mW at 10% THD
Spurious Response Attenuation………….........…………...………70dB
Hum and Noise Attenuation………………………………………40dB
Modulation Acceptance Bandwidth………………+/- 7.0KHz Minimum
Note: The data are typical, and the practical ones may be varied.

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FREQUENCY CHARTS
Unit: MHz
TX RX MODE REMARK TX RX MODE REMARK
01 156.050 160.650 D60 156.025 160.625 D
02 156.100 160.700 D61 156.075 160.675 D
03 156.150 160.750 D62 156.125 160.725 D
04 156.200 160.800 D63 156.175 160.775 D
05 156.250 160.850 D 64 156.225 160.825 D
06 156.300 156.300 S 1W ATIS 65 156.275 160.875 D
07 156.350 160.950 D66 156.325 160.925 D
08 156.400 156.400 S 1W ATIS 67 156.375 156.375 S
09 156.450 156.450 S 68 156.425 156.425 S
10 156.500 156.500 S 1W ATIS 69 156.475 156.475 S
11 156.550 156.550 S 1W ATIS 71 156.575 156.575 S 1W ATIS
12 156.600 156.600 S 1W ATIS 72 156.625 156.625 S 1W ATIS
13 156.650 156.650 S 1W ATIS 73 156.675 156.675 S
14 156.700 156.700 S 1W ATIS 74 156.725 156.725 S 1W ATIS
15 156.750 156.750 S 1W 75 156.775 156.775 S 1W
16 156.800 156.800 S 76 156.825 156.825 S 1W
17 156.850 156.850 S 1W 77 156.875 156.875 S
18 156.900 161.500 D78 156.925 161.525 D
19 156.950 161.550 D79 156.975 161.575 D
20 157.000 161.600 D80 157.025 161.625 D
21 157.050 161.650 D81 157.075 161.675 D
22 157.100 161.700 D82 157.125 161.725 D
23 157.150 161.750 D83 157.175 161.775 D
24 157.200 161.800 D84 157.225 161.825 D
25 157.250 161.850 D85 157.275 161.875 D
26 157.300 161.900 D86 157.325 161.925 D
27 157.350 161.950 D87 157.375 157.375 S
28 157.400 162.000 D88 157.425 157.425 S
CH
CH
FREQUENCY (MHz)
FREQUENCY (MHz)
INT
INT

DECLARATION OF CONFORMITY