Psk31 Operation; User" Defined Digital Modes - Yaesu FT-857D Operating Manual

T
RANSMITTER
D M
IGITAL
monitor ALC voltage. If not, press the [ FUNC ] key momentarily, then rotate the SE-
LECT knob to select to select Multi Function Row "i" [ MTR, – – –, DISP ] , then press the
[ A ]( MTR ) or [ B ] key so as to select metering of ALC ("ALC" icon will appear at the
upper of the [ B ] ] key).
5. Press and hold in the [ FUNC ] key for one second to enter the Menu mode.
6. Rotate the SELECT knob to recall Menu Mode No-001 [ EXT MENU ] , then rotate the
DIAL to change the setting to "ON" to enable the extended Menu Mode.
7. Rotate the SELECT knob to select Menu Mode No-037 [ DIG GAIN ] .
8. Following the instructions for your TNC's software, activate the transmitter from the
computer keyboard; this should cause the AFSK output from the TNC to be sent to the
radio. While transmitting, view the ALC meter; a few "dots" of ALC indica-
tion should be observed. If not, rotate the DIAL knob to adjust the AFSK
level within the FT-857 for 16 dots of indication on the ALC meter.
9. Press and hold in the [ FUNC ] key for one second to save the new AFSK level setting and
return to normal operation. You are now ready for full RTTY operation.
Because RTTY is a continuous-duty transmission mode, try to keep your trans-
missions short when running on battery power, so as to minimize current drain.

PSK31 Operation

Two dedicated PSK31 modes are available, one each for USB-side and LSB-side injection.
For BPSK work, the injection does not matter, but for QPSK the two working stations must
use the same sideband.
1. Connect the FT-857 to your computer's sound card or interface.
2. Setup for PSK31 operation is basically identical to that previously described for RTTY
operation. As before, use the "DIG" mode. However, in Menu Mode No-038 [ DIG MODE ] ,
select "PSK31-L" (for LSB injection) or "PSK31-U" (for USB injection). As with RTTY,
Menu #38 may be used to set the drive to the transmitter. And the YF-122C 500 Hz filter
or YF-122CN 300 Hz filter may also be utilized, as described previously.

"USER" Defined Digital Modes

Also provided in the FT-857 are two convenient "USER" Digital modes, one each provid-
ing USB- and LSB-side injection, which may be used for SSTV, Fax, Pactor, and other
digital operating modes.
Here is an example involving the configuration of the USER mode for JT44 (WSJT) opera-
tion with USB-side injection (as opposed to LSB injection, used in the default "RTTY"
mode):
1. Use Menu Mode No-038 [ DIG MODE ] to set the Digital mode to "USER-U."
64
O
PERATION
O
ODE PERATION
( SSB-B
ASED
FT-857 Operating Manual
AFSK )