Table of Contents
Advertisement
Note: If two Open Scan or two Group Scan groups are
available, the radio will display 'Scan1' for the original
Open Scan and 'Scan2' for the original Group Scan.
SElECTING DUPlEX
Duplex operation allows the radio to transmit on a different
frequency to that which is receives. This allows operation
through repeater stations. Repeaters automatically
re-transmit your signal over a wider area, providing
greatly increased range.
Simplex/Duplex Range Comparison
Simplex
Repeater
operation
vechicle
Duplex operation operates only on channels 1 – 8. When
duplex is selected on these channels, the radio receives on
that channel but actually transmits 30 channels higher.
e.g.
Channel Selected
1
Receive Channel
1
Transmit Channel
31
The TX4600 allows you to select Duplex operation
individually on each channel.
To enable or disable Duplex on a channel:
1. Select the required channel 1 – 8 (the Duplex setting
feature is only available on these channels).
T X 4 6 0 0
Repeater
Station
2
3
4
5
6
2
3
4
5
6
32
33
34
35
36
IN ST RU C TIO N MAN UAL
2. Press and hold the MENU key until the radio beeps.
3. Briefly press the MENU key twice. 'dUPON' (Duplex On)
or 'dUPOf' (Duplex Off) will be displayed.
4. Press the
Duplex setting.
5. Press and hold the MENU key until the radio beeps, to
store the setting.
CTCSS TONES
CTCSS (Continuous Tone Coded Squelch System) is a
squelch quieting system that allows several groups of users
to share the same channel without disturbing each other. It
uses one of a set of sub-audible (very low frequency) tones
to open and close the squelch on your radio.
There are two standard tones sets, one comprising 50 tones
and the other comprising 38 tones. Both tone sets are
included in the TX4600 to provide compatibility with other
radio system.
To toggle the required tone set:
1. Switch the radio Off.
2. Press and hold the SQL key while switching the radio
on again.
3. 'CTC50' or 'CTC38' will be displayed indicating which
tone set is selected
Note: When switching up from CTC38 to CTC50, the
radio will retain the selected CTCSS tone frequency and
automatically update the tone set number to reflect its new
position in the CTC50 tone set table.
e.g. If CTCSS tone frequency 233.6 hz (CTC38 tone set #36)
was selected, the radio will then display equivalent CTC50
tone set #47.
When switching down from CTC50 to CTC38, if there is no
equivalent CTC38 frequency, the CTCSS tone will be set to
'of' (0 hz). you will need to reselect a new tone.
vechicle
To pre-select a CTCSS tone:
1. Press and hold the MENU key until the radio beeps.
2. Briefly press the MENU key repeatedly until 'CTCXX'
is displayed, where XX is a number between 1 and 50
or of.
7
8
3. Press the
7
8
tone number (see CTCSS Tone Chart on page 22).
37
38
If the CTC38 tone set is enabled there will be 38 tones
available otherwise there will be 50 tones.
Note: To display the CTCSS frequency instead of the tone
number, briefly press the SQL key. The CTCSS frequency (in
hz) will be displayed. Briefly press the SQL key again to
return to the tone number.
or
key to select the required
or
key to select the required CTCSS
PAGE 1 7
Advertisement
Chapters
Table of Contents
Troubleshooting
