Yaesu FT-1000MP Operating Manual page 56

Operation
R n Y Polarity
-
Normally a mark tone (2125 Hz
by default) is transmitted during keydown in LSB
R T Y operation. With reverse polarity, a space
tone (2295 Hz) would be generated instead. Po-
larity is changed using menu selection 6-1.
R T Y Tone Pair
-
Select either high or low tone-
pair operation using menu selection 6-2. If you are
using the same modem for both VHF and HF
operation and cannot software-select the tone pair
needed for each band, you may want to consider
using the low tone pairs.
R n Y Frequency Display Offset
-
By default, the
frequency displayed on the front panel during
RTTY operation is the frequency of the mark
signal, but if you prefer to display the (suppressed)
carrier frequency, use menu selection 6-3.
Display Offset for RTTY Operation
Space
Mark
Tone Tone
2295 Hz 2125 Hz
I
RTTY Offset
(Mark Tone)
Shift
14.070 MHz
Carrier Frequency
(suppressed)
Space Mark
Tone Tone
2295 Hz 2125 Hz
170-Hz
Shift
Carrier
(optional)
m ~ n n n
! Y . U t U . U U
14.070 MHz
Carrier Frequency
(suppressed)
R TTY Opera tion
To operate, just press the
RTY
mode button
.
once or twice to select the desired sideband for
operation. LSB is default, and is used by normal
convention (USB can be selected for MARS or
other applications). Should you need reverse tone
polarity or non-standard shift (other than 170 Hz),
configure menu selection 6-1 and 6-2 as desired.
For optimum signal-to-noise ratio, use the 250-
Hz
BANDWIDTH
selection for 170-Hz shift, the 500-
Hz selection for 425-Hz shift, or the 2.0-kHz
selection for 850-Hz shift. Remember Sub VFO
receiver bandwidth is only selectable between 6.0
kHz, 2.4 kHz and 500 Hz (optional YF-100 re-
quired) for RTS-Y and K T .
Before transmitting, preset the
RF PWR
control
fully counter-clockwise, and set the
METER
selec-
tor to
ALC.
Key the transmitter (you can use the
MOx
button) and adjust the
MIC
control for mid-
scale indication. Now you can switch the
METER
selector to
PO
and set the
RF PWR
control for the
desired power output.
Note that for AMTQR operation, you must have
the VOX button off, and may need to set the
AGC
control to
FAST
or
OFF
(and reduced
W F
Gain for
Mode A (ARQ).
page 54