Channels - Entel HT644 GMDSS User Manual

Simplex / Duplex Channel Use
Your transceiver has been factory programmed in accordance with FCC (USA), Industry Canada
and International regulations.The mode of operation cannot be altered from simplex to duplex
or vice versa. Simplex or duplex mode is automatically activated, depending on the channel and
the channel set and whether USA, Canadian, or International mode is selected.
Refer to the channel charts listed on pages 18-20 of this user manual.
If you have a licence to use a specific simplex or semi-duplex channel, contact your dealer who
may be able to programme your channel using the transceiver's private channel memory.
Channel A/B Instant Access
For your convenience, two user assigned channels can be programmed for instant access. If the
[A/B] key is pressed and no channel A or B has been assigned, a short beep will be heard.
Programming A/B Instant Access Buttons
1. Hold down the [A/B] key and turn on the transceiver.
2. The letter A will appear on the display and dashes "_ _" indicate that no channel has been
designated channel A.
3. Press the [UP/DOWN] button until the desired channel number is displayed.
4. With the desired channel number displayed, press the [MEM] key once.The "A" will stop
flashing, indicating that the displayed channel is now designated channel A.
5. Press the A / B button again.The letter "b" will appear on the display.
Repeat steps 2 through to 4.
6. Switch transceiver off and on to exit this mode and save changes. If you wish to clear instant
access channels follow step 1 then press the [MEM] key.The "A" will flash. Now switch the
transceiver off and on again.
Note: Should you later wish to delete any stored channels simply press "MEM" key whilst in
A/B programming mode.
Operation of A/B Instant Access Buttons
Pressing the [A/B] button will toggle between A, B and the previous selected working channel.
Channel A is represented by the "A" to the left of the channel number on the LCD, & channel B
is represented by "B".
Note: Do not confuse this "A" with the one that is sometimes displayed to the right hand side
of the channel number (in USA and Canadian modes)

Channels

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