BL
-820 O
PERATING
M
ANUAL
17
DTMF C
ODE
S
ET
(
16-
KEY
VERSION
ONLY
)
You may send the desired telephone number manu-
ally.
To dial a number manually, press the assigned pro-
grammable key, then press the desired numbers on
the front panel’s numeric key. Now, press the
PTT
switch to send the telephone number. The DTMF
tones sent during the dialing sequence will be heard
in the speaker.
A
DVANCED
O
PERATION
TA S
CAN
Press the assigned programmable key to toggle the
TA (Talk Around) scan feature “On” and “Off.”
While TA scan is proceeding, the
BL
-820
will search
both the transmit and receive frequencies (the “ ”
icon will blink). When a signal is encountered on
the receive frequency, the
BL
-820
will pause until
the signal disappears (“ ” icon will appear but not
blink). When a signal is encountered on the transmit
frequency, the
BL
-820
will check for activity on the
receive frequency every few seconds (interval pro-
grammed by your Dealer).
