Ssb Transmission - Yaesu FT-1000 Operating Manual

4. Operation - Transmitting
Transmitting
The transmitter can be activated within the 500-kHz
segment of any of the hf amateur bands, and from 28 to
30 MHz. When tuned to any other frequency, GEN is
displayed at the left side of the display, and the trans-
mitter is disabled. However, you are responsible to
restrict your transmissions to those frequencies on
which you are authorized to do so. You should also
restrict transmissions to the frequencies for which your
antenna is designed.
Attempting to transmit outside of an amateur band
segment will cause the red TRANSMIT LED to the right
of the meter to blink. The transmitter is also temporari-
ly inhibited when stopping memory scanning (des-
cribed later), as pressing the PTT switch while
scanning just causes the scanner to stop.
Whenever the transmitter is activated, the FT-1000
automatically detects any reflected power that might
appear at the main antenna jack (as a result of an
impedance mismatch), and disables the transmitter if
too much reflected power is found (in which case the
red HI SWR LED at the right side of the display will be
lit). Although this protection system should prevent any
damage to the transceiver, we still recommend that you
never activate the transmitter without having a proper
antenna connected to the main ANT jack.
Automatic Antenna Matching
The automatic antenna tuner in the FT-1000 makes
even first-time transmitter setup very simple. After you
have used it once on your favorite bands, it will be able
to recall previous settings from memory (the tuner has
39 of its own) during reception, whenever you tune to
the same part of the band again. When you use the tuner
the first time on an antenna, we recommend you set the
RF PWR control to around the 9-o'clock position, to
minimize interference you might cause others, and also
to minimize stress on the tuner, feedline and antenna (in
case there is a high SWR). All you have to do before-
hand is to make sure of the frequency you will transmit
on, and check that it is clear of other signals. Also, if
you want to visually monitor the tuner's action, set the
METER selector to the SWR position.
ing settings (and, if monitoring SWR on the meter, you
should see the tuner select the lowest possible reading).
When the WAIT LED turns off, you are ready to transmit
(assuming the HI SWR LED didn't light).
CAUTION
If the red WI SWR LED lights at any time, the
tuner is unable to match your antenna to the
transmitter at the displayed frequency. You will
have to tune to another frequency, or repair or
replace your antenna or feedline.
After using the antenna tuner, the green TUNER LED
will remain on (unless you press the TUNER button to
turn it off), and the orange WAIT LED will occasionally
flash when you change frequency, indicating that the
main microprocessor is reporting the frequency change
to the tuner coprocessor (reception is unaffected). If the
tuner coprocessor finds, by comparing the frequencies
in its own memories, that you have tuned far enough to
possibly require rematching, it will reset itself to the
new range (if it has any previously stored settings for
the new range). However, when you first connect a new
antenna, the tuner will not have the correct settings
stored in these memories, so you will need to "train"
the tuner, by pressing the START button whenever you
change to a new band or frequency range (for this
antenna).
SSB Transmission
To transmit in LSB or USB mode:
¢ Make sure the appropriate mode indicator is lit, and
set the METER selector to the ALC position.
If this is the first time you are transmitting SSB with
the FT-1000, preset the MIC and RF PWR controls to
about the 12- 0'clock position, and make sure the ¥OX
is off (button out).
* Check the RX and TX LEDs above the tuning knobs to
determine which frequency you're going to transmit
on, and make sure the GEN box is not showing to the
left of the main frequency display.
To determine the optimum setting of the MIC control
for your microphone, adjust it while speaking into the
microphone (at a normal level) so that the meter de-
flects to about midrange on voice peaks (the upper end
of the blue ALC range). Once found, this setting can be
left as it is unless you change microphones,