29
Voice Mode VOX Setup
V O X
selects PTT (push-to-talk) or voice-operated
(VOX) transmit (
V OX
icon on).
The VOX delay can be set from 0.05 seconds (50
ms) to 2.00 seconds. The lower the setting, the
faster the K3 will return to receive mode after a
pause in speech. See
D E L AY
(pg 14).
The
MAIN:VOX GN
menu entry (VOX gain)
should be set so that the K3 enters transmit mode
when you speak at a normal level. Setting
VOX GN
too high will result in the K3 switching into
transmit mode in response to incidental noise.
MAIN:ANTIVOX
adjusts VOX immunity to signals
received through the K3's speaker or headphones.
While listening to a loud received signal, and with
the mic closer to the speaker than it would be in
normal operation, adjust ANTIVOX upward until
t
he
K3
does
n’
t
s
wi
t
c
h
t
o
t
r
a
ns
mi
t
mode.
Digital Voice Recorder (D VR)
If you have the KDVR3 option installed, you can
record and play voice messages as well as capture
received audio.
Me ssage Re cord and Playback
To start recording, tap
R E C
, then tap any of
M1
-
M4
. T he remaining buffer time in seconds will be
displayed as you speak. Tap
R EC
again to stop.
T ap
M1
–
M4
to play. To cancel, tap
R EC
. You
can also hit the keyer paddle, key, or any switch
besides
M1
–
M4
to cancel play.
To auto-repeat a message,
Hold
(rather than
tap
)
M1
–
M4
.
MAIN:MSG RPT
sets the message
repeat interval (1 to 255 seconds).
Re ceive Audio Re cording
Hold
AF R E C
to start / stop audio record. The
icon will appear. Recording starts at the
beginning of available space each time it is started,
and will stop at the end if not terminated sooner.
Hold
AF P L AY
to start / stop audio playback.
During playback, the
icon flashes. T his
s
er
ves
as
a
r
emi
nder
t
ha
t
you’
r
e
hear
i
ng
r
ecor
ded
rather than live audio.
AM Operation
A 6 kHz (AM) or 13 kHz (FM) crystal filter is
required on the RF board for AM transmit and
receive (pg. 46).
When listening to AM signals, you can hold
AL T
to
select envelope detection (
AM
) or synchronous
detection (
AM -S
). With envelope detection,
selective fading can notch out the AM carrier,
resulting in severe distortion. The synchronous
detector solves this problem by phase-locking an
oscillator to the AM carrier. Careful tuning of the
signal is required.
You can also listen to AM using LSB or USB
modes. If you have a 6-kHz filter installed, voice as
well as music will have excellent fidelity.
FM Operation
FM mode can be disabled by setting
CONFIG:FM MODE
to
O FF
.
An FM-bandwidth crystal filter (at FL1) is required
on the RF board for FM transmit and receive (pg.
45). The sub receiver also requires an FM filter at
FL1 for FM receive. DSP filter bandwidth is fixed
in this mode; presets and filter controls are not used.
FM defaults to simplex (transmit and receive on the
same frequency). T he following controls and menu
entries are used for repeater setup:
Holding
AL T
switches between simplex, T X
(+), and T X (-). This is indicated by the
+
and
-
icons (near the
FM
icon).
Repeater offsets can be programmed on a per-
band/per-memory basis. See
MAIN:RPT OFS
.
Tone encode is set up by holding
P I TCH
.
Rotate VFO A to select a CT CSS tone
frequency (or the European repeater access
tone, 1750 Hz). Use VFO B to turn tone encode
on (
P L TO NE
) or off (
P L O FF
).
All of the settings described above are saved in
frequency memories.
Содержание K3
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