Yaesu FT-1000 Operating Manual page 16

3. Controls & Connectors - Front Panel Controls
(18) MAIN VFO-A RX & TX LEDs
These lamps indicate the transmit/receive status of
the main tuning knob and display. When the green RX
lamp is lit, the receiving frequency is under control of
the main knob and display (either vfo (A) or a recalled
memory channel). When the red TX lamp is lit, the
transmitting frequency is under control of the main
knob and display.
(19) Lock
This button toggles locking of the main tuning knob
to prevent accidental frequency changes. LOCK is dis-
played in a red box above the main frequency when
active (the knob can still be turned, but it does nothing).
Press again to re-enable the tuning knob.
(20) BANDWIDTH
These four momentary buttons select the 2nd and
3rd IF filters for the receiver (except in the FM mode).
In AM moée, either 2.4-kHz or 6-kHz bandwidths are
selected by pressing the 2.4K button (off = 6-kHz). The
selectivity provided by these selections can be further
enhanced by installing optional filters (page 40). See
the diagram on page 23 for the available filter combina-
tions. The sub receiver uses only 500-kHz (optional)
and 2.4-kHz selections.
(21) BAND (Keypad)
The keypad provides one-touch band selection, or
digital frequency entry. Normally, pressing one of the
ten white numbered keys selects the corresponding
(MHz) amateur band for operation (and pressing the
SUB button first and then another key selects the band
for the sub vfo. However, if the ENT key is pressed first,
the yellow labels on the keys become effective, for
entering any frequency one digit at a time. If you press
the white numbered key for the band your are already
on, you will select the alternate subband vfo on that
band. See the Operation chapter for details.
(22) Sub (VFO-B) Tuning Knob
This knob adjusts the sub vfo (B) operating frequen-
cy. Tuning increments are the same as described for the
main tuning knob.
(23) SUB VFO-B RX & TX LEDs
These lamps indicate the current status of the sub
vfo. When the green RX lamp is lit, the receiving fre-
quency is under control of the sub vfo (B). When the
red TX lamp is lit, the transmitting frequency is under
control of the sub vfo. During dual receive operation,
the RX lamps above both tuning knobs are lit.
(24) Lock
This button toggles locking of the sub vfo tuning to
prevent accidental frequency changes. The red LED
just above this button glows when active (the knob can
still be turned, but it does nothing). Press the button
again to re-enable the tuning knob.
(25) NOTCH -@> APF
These controls are active only when their functions
have been enabled by the corresponding buttons below
the sub vfo tuning knob. The LEDs above the buttons
indicate when the functions are active. The inner NOTCH
control adjusts the IF notch filter frequency. The outer
APF control adjusts the frequency of the Audio Peak
Filter in CW mode. Both affect only the main receiver.
(26) CLAR Tuning Knob
This knob tunes the clarifier offset frequency up to
+9.99 kHz, when activated by the CLAR RX and/or TX
buttons just above it (the 3-digit offset frequency ap-
pears in the center of the display when the clarifier is
active). Operating details are on page 28.
(27) SHIFT -<@> WIDTH
These controls tailor the IF passband of the main
receiver (the main vfo (A), or a recalled memory chan-
nel) in all modes except FM. The inner SHIFT control
offsets the center frequency of the IF passband from the
displayed frequency when turned away from the 12-
o'clock position. The outer WIDTH control, when turned
counterclockwise from the fully clockwise position,
reduces the overall IF bandwidth from the maximum
selected by the BANDWIDTH buttons.
(28) MEM
This detented knob selects the operating memory
channel when the memories are active (but not re-
tuned). When the vfo or memory tune functions of the
main display are active, turning this knob causes the
sub vfo display to temporarily show the frequencies of
the memories (memory check), without otherwise af-
fecting operation. The channel number of the selected
memory is displayed at all times at the center right of
the display (in front of "CH"').
(29) Electronic CW Keyer Controls
The KEYER button toggles the internal CW keyer on
and off, as indicated by the LED above this button.
BK-IN turns full break-in (QSK) CW operation on and
off. SPOT turns the CW receiver spotting heterodyne
oscillator on and off. The SPEED control sets the repeti-
tion rate of the keyer/bug simulator.