65
FT-857 Operating Manual
2. Press the [
MODE
(
t
)] or [
MODE
(
u
)] key, as needed, to select the DIG operating mode
(the “
DIG
” icon will appear on the display).
3. Now use Menu mode to configure the transceiver’s passband response. Once in the
Menu mode, rotate the
SELECT
knob to select Menu Mode
No-039
[
DIG SHIFT
]
, and
rotate the
DIAL
knob to set the desired BFO offset. (a center frequency for the receiver
response). For WSJT use, a setting of about “+1500” will be a good starting point.
4. Finally, depending on how you wish the display to respond, you may program in a corre-
sponding display shift, using Menu Mode
No-036
[
DIG DISP
]
.
5. Remember to press and hold in the [
FUNC
] key for one second when exiting the Menu
mode.
The setup of the AFSK drive level is identical to that described previously for RTTY opera-
tion.
The USER-L and USER-U Digital modes should allow you to operate on any
SSB-based AFSK Digital mode. Note that the “PSK31” configurations will also
work well for many Digital operating situations.
P
ACKET
(
1200/9600
BPS
FM
)
O
PERATION
The
FT-857
is designed for operation on either 1200 bps or 9600 bps packet, and setup is
similar to that described previously for SSB-based modes. A separate Data input adjustment
is provided, allowing you to optimize the deviation on the FM Packet modes separately
from the levels set for SSB-based Digital modes. The RX-Data output lines are fixed-level
outputs, not affected by the setting of the AF Gain control.
1. Connect your TNC to the
FT-857
’s rear-panel
DATA
jack,
per the illustration.
2. Note that different connections are used for 1200 bps and
9600 bps Packet.
3. Use Menu Mode
No-073
[
PKT RATE
]
to select the de-
sired Packet mode.
4. Once you have entered the Menu and have selected Menu
Mode
No-073
[
PKT RATE
]
, rotate the
DIAL
knob to se-
lect either “
1200bps
” or “
9600bps
” as the Packet rate.
Press and hold in the [
FUNC
] key for one second to save
your setting and exit.
5. Press the [
MODE
(
t
)] or [
MODE
(
u
)] key, as needed,
to select the PKT operating mode (the “
PKT
” icon will
appear on the display).
You are now set up for reception on Packet. If you are oper-
T
RANSMITTER
O
PERATION
D
IGITAL
M
ODE
O
PERATION
(
SSB-B
ASED
AFSK
)
P
T
T
D
A
T
A
I
N
G
N
D
DATA
OUT
DATA
IN
PTT
DATA OUT
(1200bps)
D
A
T
A
O
U
T
(9
6
0
0
b
p
s
)
