Yaesu VX-150 Operating Manual page 23

DTMF C
The code squelch system use 3-digit numeric codes (000
(dual, audible) tone pairs.
There are twelve code memories numbered [ 1 ] ~ [ 9 ] , [ A ] and [ D ] , which store 3-digit
DTMF paging codes (these are independent and unrelated to the channel memories and the
VFOs).
The code squelch mode is very simple: both you and the other station communicate using
the same 3-digit DTMF sequence, sent automatically at the start of every transmission.
Your receiver normally remains silent to all signals that are not prefixed by your selected
3-digit code. When you receive the matching tone sequence, your squelch opens and stays
open until a few seconds after the end of their transmission.
In the code squelch mode, you must first store and then manually select the one Code
Memory holding the 3-digit DTMF code required to open your squelch (as described on
the following pages). Also, in the code squelch mode, Code Memories [ 1 ] ~ [ 9 ] always
function the same.
Codes of up to nine other stations can be stored in these memories. These are stations you
expect to frequently contact, and whose page calls you also want to receive. Members of a
common group or club usually share a common 3-digit paging code so that they can be
paged simultaneously.
Remember, with Code Squelch operation (but not with DTMF Paging), you can only re-
ceive a call on the currently selected Code Memory, and the display does not change when
a call is received. So for code squelch, as mentioned before, the Code Memory distinction
does not apply (although you must still store the 3-digit Code Memories).
Storing Code Memories
The first thing to do before using Code Squelch is to store 3-digit code in Code Memory:
•
Press the [ F/W ] key, then press the [ 0 ( SET ) ] key to enter the Set mode.
‚
Rotate the DIAL to select Menu Item #40 ("PG CODE
ƒ
Press the [ F/W ] key to enable adjustment of this Menu item.
„
Rotate the DIAL to select the Code Memories register into which you wish to store this
code string.
...
Press the [ F/W ] key, then press the [ F/W ] key to begin Code Memories entry into the
selected register.
†
Rotate the DIAL to select Key in the DTMF digits you wish to store into this register.
‡
Press the PTT switch to save the setting. To store other numbers, repeat this process,
using a different DTMF memory register.
VX-150 O
PERATING
S
ODE QUELCH
M
ANUAL
Advanced Operation
( R
O
EQUIRES PTIONAL
000 000
000 000 ~ 999
PG CODE PG CODE"). PG CODE
PG CODE
FVP-25 )
999 999
999), transmitted as DTMF 999
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