Digital Mode Operation (Ssb-Based Afsk); Rtty (Radio Teletype) Operation - Yaesu FT-817ND Operating Manual

T
RANSMITTER
D
IGITAL
The FT-817 provides extensive capability for digital mode operation on the HF, VHF,
ND
and UHF bands. The use of AFSK (Audio Frequency-Shifted Keying) configurations al-
lows a wide variety of different communication modes to be utilized. The Menu provides
for specific digital mode selections, which include custom BFO offsets to optimize the
receive and transmit passbands for the mode selected.
Before beginning Digital operation, you need to define which Digital mode will be utilized.
To do this, use Menu #26 as follows (in this example, we will set up RTTY as the Digital
mode):
1. Press and hold in the
2. Rotate the
3. Rotate the
4. Press and hold in the
Use this technique to set up any digital mode.

RTTY (Radio TeleType) Operation

The "RTTY" mode on the FT-817
with long-standing amateur practice. If you need USB-side injection for your application,
see the "User" mode discussion below.
1. Connect your TNC (Terminal Node Controller) or terminal modem to the FT-817
rear-panel DATA jack, per the illustration.
2. Press the
will appear on the display). Be certain to use the "TX Audio" line from your TNC, not
an "FSK Key" line, for the transmit-data connection.
3. Press the
will appear on the display). You should now be able to tune around the band, and any
RTTY signals heard should be capable of being decoded.
Pin Label
DATA IN Maximum Input Lebel: 1.0 V pp
Impedance: 10 kΩ
PTT Ground to Transmit
DATA OUT Maximum Output Level: 300 mVpp
Impedance: 10kΩ
38
O
PERATION
M O
ODE PERATION
key for one second to enter the Menu mode.
knob to select Menu #26 (DIG MODE
knob to select "RTTY
RTTY RTTY." RTTY
RTTY
key for one second to save the new setting and exit.
is based on LSB-side carrier injection, in accordance
ND
/ key, as needed, to select the DIG mode (the "DIG
/ key, as needed, to select the DIG mode (the "DIG
Note
( SSB-B
ASED
DIG MODE DIG MODE
DIG MODE). DIG MODE
FT-817
ND
AFSK )
ND
DIG" icon
DIG DIG
DIG
DIG" icon
DIG DIG
DIG
Operating Manual
's