FT-920 Operating Manual
50
the C
OMP
meter indication fluctuating according
to your speech input. Now adjust the front panel’s
P
ROC
L
EVEL
control so that the reading on the C
OMP
scale peaks at or below 10 dB.
To deactivate the Digital Speech Processor, press
the P
ROC
switch once more. The P
ROC
indicator
on the display will disappear.
?
Raising the compression level generally raises talk
power; however, excessive advancement of the
P
ROC
L
EVEL
control will cause the signal-to-noise
ratio on your speech signal to deteriorate, thus
reducing the effectiveness of the speech proces-
sor. Keeping the compression level below 10 dB
will ensure that this does not occur.
DSP Voice Pattern Contours
If you wish to enhance the effectiveness of your
speech processing system, you may choose from one
of four voice pattern contours which are provided via
Menu Item U-51. See page 80.
OFF: DSP microphone equalization is disable.
1:
Mid- and high-frequency components are
enhanced .
2:
A high-emphasis response is produced,
ideal for pile-up or contest work.
3:
Both low- ang high-emphasis response are
produced.
4:
A wide bandpass response is produced,
emulating a “Broadcast” microphone audio
characteristic.
Once you have selected the desired voice pattern
contour, press the DSP switch to activate the Digital
Signal Processing (DSP) system. No further adjust-
ment should be necessary.
?
The Voice Pattern Contour feature may be used
alone, or in conjunction with the Digital Speech
Processor. Experiment with these systems singly
and in combination to determine which setting
provides the best talk power and audio quality in
relation to your voice’s characteristics.
Voice Monitor Operation
The Monitor function allows you to observe the char-
acteristics of your speech signal so as to make ad-
justments of the DSP, AM or FM modulation charac-
teristics, etc.
Press the M
ONI
switch to activate the Voice Moni-
tor; the M
ONI
indicator on the display will become
illuminated. Now, when you speak, your voice will
be audible from the speaker or headphones.
Adjust the Monitor’s volume by rotating the M
ONI
L
EVEL
control. Clockwise rotation increases the
volume level from the Monitor.
Press the M
ONI
switch again to turn the Monitor
off.
Digital Voice Recorder Operation (Transmit)
The FT-920’s Digital Voice Recorder can be used to
store as many as four messages, in your own voice,
of up to 16 seconds in length. Such messages may
be used for repetitive “CQ” calling for contest work;
you might also use the Digital Voice Recorder to store
your callsign phonetically, then send it automatically
in a pile-up situation late at night when you don’t wish
to awaken other family members (you can also store
“Roger, roger, five nine, fifty-nine” plus your callsign
to complete the contact).
Operation is similar to that described for receive-mode
recording (see page 46), except that the [R
EC
] and
[P
LAY
] keys are pressed
and held in for ½ second to
accomplish the desired action (on receive, these
switches are pressed
momentarily).
The four message locations are designated by the
[1] ~ [4] B
AND
keys.
Press and hold in the [R
EC
] key for ½ second, then
press the [1] key on the keypad to begin record-
ing in DVR memory #1.
Speak into the microphone in a steady voice level.
The recording volume level is set automatically,
so the M
IC
G
AIN
control has no effect during DVR
recording.
Press the [1] key again to stop recording, if you
elect not to use the full 16 seconds available.
Repeat this process for any of message locations
[2] ~ [4] into which you wish to store a message.
To review the message without transmitting it,
press and hold in the [M
ONI
] key for ½ second.
The replay volume may be adjusted using the AF
G
AIN
control.
To transmit the stored message over the air, press
and hold in the [P
LAY
] key for ½ second, followed
immediately by the appropriate B
AND
key. The PTT
circuitry will automatically engage, switching the
FT-920 into the transmit mode, and the transceiver
will return to receive at the completion of the mes-
sage.
p
Summary of Contents for FT-920
Page 7: ...FT 920 Operating Manual 5...
Page 9: ...FT 920 Operating Manual 7...
