OPERATION
3-1-36
SIGNALING
CTCSS
A CTCSS tone is any one of 32 standard sub-audible tones ranging from 67 Hz to
250.3 Hz and would generally be used in conjunction with an audible modulation signal in a
composite modulation mode. The procedure for initiating these tones is as follows:
Tone selection
(1) At
the
Sig Gen
menu, press
[Select Source]
.
(2) At
the
Internal Source Selection Menu
, press
[CTCSS]
. The
Continuous Tone
Selection Menu
is now displayed, see Fig. 3-1-30.
(3)
Key in the required tone number (0 to 15) and press [enter].
Fig. 3-1-30 Continuous tone selection menu
Selecting alternative tone standards
A list of the 16 tones of the current standard is available by pressing
[Select Standard]
.
This action displays the
Tone Standard Selection Menu
with the current standard highlighted. To
select from further lists of 16 tones, press
[CTCSS2]
or
[USER]
. The
Tone
Standard Selection
Menu
changes to show the new list.
Editing a tone standard
Pressing
[TEMP]
displays a further list of 16 tones set to the default value of 10 Hz. The
standard can be edited by selecting
[Edit Standard]
from the menu in Fig. 3-1-30. This gives
you the
Continuous Tone Edit Utility
menu.
CTCSS 1, CTCSS 2 or USER can be loaded to TEMP, which is a volatile store of 16
tones set at a default value of 10 Hz at switch on. Tones can then be changed by using
[Tone
No]
,
[Tone Freq]
,
[Next Tone]
or
[Previous Tone].
When the required changes have been made,
the new standard can be saved by pressing
[Store to User]
.
USER
then becomes a user defined
standard.
Tone
Number
Select
Source
LOCAL
Edit
Standard
Select
Standard
Continuous Tone Selection Menu
Current Standard: CTCSS 1
C1889
Hz
Tone Number:
Int F4:
01 --
71.9
ctc1
