Digital Mode Operation; Rtfy (Radio Teletype) Operation - Yaesu FT-100D Operating Manual

Transmitter Operation
DIGITAL MODE OPERATION
The FT -100 provides extensive capability for digital mode operation on the HF, VHF, and
UHF bands. The use of AFSK (Audio Frequency-Shifted Keying) configurations allows 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.
RTTY (RADIO TELETYPE) OPERATION
I. Connect your TNC (Terminal Node Controller) or terminal modem to the rear panel's
DATA jack, per the instructions on page 20. Be certain to use the "TX AUDIO" line from
your TNC, not an "FSK Key" line, for the transmit-data connection.
2. Press the
[MODE]
key, as needed, to select the DIG mode (the "DIG" icon will appear
on the display). If"AM" appears in the mode selections, instead of "DIG," press and
hold in the
[MODE]
key for
1:,
second when you are in the AM mode; this will cause
the transceiver to toggle from AM to DIG.
3. Press and hold in the [FUNC] key for
1:,
second to activate the MENU mode.
4. Rotate the
SELECT
knob to select MENU #34 (AFSK MODE).
5. Rotate the
MAIN DIAL
to set the AFSK mode to "rtty-L" (AFSK operation using the
LSB mode) or "rtty-U" (AFSK operation using USB).
Note: Most Amateur RTTY operation utilizes the LSB mode.
6. Check the settings of the MENU items associated with RTTY operation:
MENU #35 (RTTY SHIFT): 170/425/850 Hz (Default: 170 Hz)
MENU #36 (RTTY DISPLAY): nor/CAr (Default: nor)
7. If the Meter is not set to monitor ALC voltage, press the
[FUNC]
key, as needed, to
select Operating Function Row 7 [MTR, TUN, PRO, VOX], then press the [A](MET)
key so as to select metering of ALe.
8. Press and hold in the
[FUNC]
key for
1:,
second to enter the MENU mode, then rotate the
SELECT
knob to select MENU #28 (AFSK LEVEL).
9. 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; four "dots" of ALC indication should
be observed. Ifnot, rotate the
MAIN DIAL
to adjust the AFSK level within the FT-IOO
for two to three dots of indication on the ALC meter. Press the
[FUNC]
key momen-
tarily to save the new AFSK level setting and return to normal operation. You are now
ready for RTTY operation.
~ '
'." The FT-JOO is designed for a 50% duty cycle, so you may wish to set
ME/VU
~
_ #21 jor 50 Watts of power output
if
you plan on making lengthy RTTY trans-
/ ~
..
nllSSUJ/ls.
FT-JOO
MICRO MOBILE OPERATING MANUAL
59