12
Channels
INT, USA & Canadian Modes
In compliance with worldwide license regulations the following versions of HT544
are available:
Version A: INT, USA & Canadian modes
Version B, C & D: INT mode only
1. In the case of version A only; to change the channel set of the transceiver, hold down the
[WX] key. The mode changes from USA to Canadian to International.
2. Refer to the marine channel charts in this booklet for allocated channels in each mode.
NOAA Weather Channels
(Applicable to version A model only)
1. To receive a weather channel, press the [WX] key. The transceiver enters into weather
channel mode.
2. There are 10 weather channels. Use the & buttons to select the desired channel.
3. To exit from the weather channels press the [WX] key. The transceiver recalls the previous
working channel.
Emergency Channels
To select the emergency channel, press the [16/9] button from any channel. Channel 16 appears
on the display.
To recall the previous channel used, press the [16/9] button once again.
Channel 9
Channel 9 is used as a hailing channel for initial, non-emergency contact with other vessels. Hold
down the [16/9] key for 1 second to select channel 9.
To recall the previous channel used, press the [16/9] button twice.
Monitor Channels
Press the blue monitor button on the top of the radio to defeat the squelch mute and release
button to mute radio. A long press (radio will beep) will hold the squelch mute open until
pressed again to cancel again to return to squelch mute.
Adjusting Squelch Threshold
Press the blue monitor button on the top of the radio and switch radio on. Use &
buttons to adjust threshold (between 01 - 16, 01 is more sensitive & 16 is less sensitive). Press
MEM to store the setting.
HT544
11
Using Your HT544
1. Turn the transceiver on by rotating the volume control in a clockwise direction. A power on tone
is generated after 1 second to indicate the transceiver has passed its self-diagnostic test. During
standby the LED indicator will pulse amber every 3 seconds, to further verify its
circuitry is functioning correctly. Select the desired audio level by further rotating the control
clockwise. After power-on, the transceiver will always default to the last channel selected.
2. Turn the squelch control fully counter clockwise, then rotate clockwise until the white noise stops.
This condition is known as the "squelch threshold". If the control is turned clockwise past this
point, weak signals may not be received. No noise or signal is heard until a signal is received that
exceeds the squelch threshold.
3. Select the desired channel using the [UP/DOWN] buttons. A full listing of channels can be found
on page 17-18. Sometimes, a slight adjustment of the squelch threshold is needed as some
channels have a higher noise level than others.
4. When receiving a signal the LED indicator illuminates green. An “RX” is also displayed on the
LCD.
Reception
Transmitting
1. Perform steps 1 through 3 of RECEPTION.
2. Before transmitting, monitor the channel and make sure it is clear.
3. For communications over short distances, press the [H/L] key and select low power (1 watt).
Transmitting on 1 watt prolongs battery life, and should be selected whenever possible.
4. When receiving a signal, wait until the signal stops before transmitting. The transceiver cannot
transmit and receive simultaneously.
5. Press the [PTT] (Push-To-Talk) button to begin your transmission. To confirm transmission in
progress the LCD indicator illuminates TX and the LED illuminates RED.
6. Hold the transceiver 1 inch from your mouth and speak slowly and clearly into the microphone.
7. When the transmission is finished release the [PTT] button.
Turning The Radio On & Off
Turn the ON/OFF control on the top of the radio clockwise until the LCD iluminates & a short
beep is emitted. To turn the radio off turn the ON/OFF control anti-clock wise until the LCD
deluminates.
Using Your radio
Before using your radio you may need to adjust the volume on the radio to take in to account
background noise. Adjust the volume using the rotary control on the top of the radio.
HT544
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