Data (Psk) Operation; Psk Decode - Yaesu FT DX 3000 Operating Manual

DaTa ( psk ) O
The FT 3000 is equipped with a PSK decode function. You can easily synchronize by aligning the marker on the AF-
DX
FFT screen display, together with the decode screen while receiving a signal. Decoding with this transceiver supports
both general BPSK and QPSK that have error correction functions.
1. Press the [ MODE ] switch, set the operating mode to
"DATA USB".
a :
dviCe
Press and hold the [ MODE ] switch for approxi-
mately one second to switch back and forth between
"DATA USB" and "DATA LSB".
2. When you have configured Menu item "067 DATA
MODE" to "PSK", and "194 PSK MODE" to "BPSK"
or "QPSK".
3. Receive a PSK signal, and press and hold the
[ SCOPE ] switch for one second or longer.
The PSK DECODE screen displays, and the decoded
text is displayed on the screen.
a :
dviCe
 Align the peak of the received signal with the marker
of the AF-FFT screen.
 If text is displayed due to noise and band clutter,
when a PSK signal is not being received, turn the
[ CLAR/VFO-B ] knob to adjust and threshold level.
Displays the PSK signal
decoded.
Displays content written to
the PSK text Memory ※
※ If you transmit content written to the PSK text Memory
(right page), the transmitted PSK signal is displayed as
text.
Note that transmitted text changes to white.
Scrambled text may be displayed due to noise and band clutter, when a signal is not being received. You can ad-
just the threshold level so scrambled text is not displayed.
Turn the [ CLAR/VFO-B ] knob, and adjust the
threshold level (between 0 and 100) so scrambled
text is not displayed due to noise.
 Note that text will no longer be displayed for
weak signals if you increase the level too much.
 You switch between threshold level display and
normal display each time you press the [ SE-
LECT ] button.
Page 106
peraTiOn
Psk d
eCode
n
ote
 Cross talk, noise, phasing, and the like may prevent
 You can set the data output level of data communica-
 If continuously sending for more than a few minutes
To cancel the PSK decode function, press and hold the
[ SCOPE ] switch again for one second or longer.

PSK DECODE

C Q C Q C Q D E JA 
C Q C Q C Q D E W  D C X
Threshold Level Adjustment
 The threshold level is displayed in the VFO-B
:
reliable decoding of the message.
tions (PSK31, SSTV, etc.) using Menu item "077
DATA OUT LEVEL".
or if sending time is longer than receiving time, re-
duce the transmit power output to between 1/2 and
1/3 using Menu item "177 TX MAX POWER".
AF-FFT
AF-FFT display (see page 41)
("Spectrum" or "Waterfall" display)
frequency display.
Threshold level
FT 3000 O
DX
M
peraTing anual