This button toggles operation be-
tween a memory and a VFO. Either
VFO-A
(or
-B),
or
MEM
is dis-
played to the left of the frequency
to indicate the current selection.
If
a displayed memory has been re-
tuned, pressing this button once
returns the display to the original
memory contents, and pressing it
again returns to the (last used)
VFO.
Pressing this button while receiving in
a ham band activates the transmitter
for while the tuner rematches the an-
tenna for minimum SWR. The resulting
settings are stored in the antenna
tuner's 31 memories, for automatic re-
call later. See
page
17.
Pressing this button so that its
When receiving on a VFO,
1
I
this button toggles operation
and display between VFOs A
and
B.
On a memory, it tog-
I
I
in line. ~e'ce~tion is not affected.
The
START
button also acti-
vates the antenna tuner.
1
1
LED is lfi ~uts the antenna tuner
I
'This knob tunes the operating fre-
quency of the VFO or a recalled mem-
ory. Tuning increments are normally
10 Hz (1 00 Hz in AM and FM modes).
The markings on the knob represent
Front
Panel
Pressing this button momentarily
displays the contents of the cur-
rently selected memory channel for
three seconds. Holding this button
for
1/2
second copies all data from
the memory to the VFOs, as two
beeps sound. Previous data in the
VFOs is overwritten. See page
24.
When receiving on a VFO or a retuned
memory, holding this button for
1/2-sec-
ond writes the current operating data
to the currently selected memory. Two
beeps sound, and any previous data in
the memory is overwritten. Also, press-
ing and holding this button after recall-
ing a memory (without retuning)
causes the memory to be "blanked."
Repeat to unblank the memory.
memory half. Previous contents
of the non-displayed
VFOlmem-
This knob tunes the clarifier offset
frequency up to
*
9.99
kHz, when
activated by the
CLAR
button to
the left of it. Operating details are
on page 21.
I
Pressing either of these buttons mo-
mentarily steps the operating fre-
quency down or up one ham band,
or 100 kHz (if receiving in GEN
mode), respectively. Pressing
FAST
with one of these buttons steps
down or up 1 MHz if receiving in
GEN mode. Continue holding either
button for repeated stepping.
This button determines the function of
the
DOWNIUP
buttons when receiving
on a VFO or retuned memory: GEN
steps are 100 kHz, and HAM steps are
from one amateur band to the next.
I-l
I
The inner
NOTCH
control adjusts the
IF notch freauencv when activated bv
the
buttonli~~ next to the label.
li
modes other than AM and FM, the
outer
SHIFT
control offsets the IF
passband center frequency from the
displayed frequency when turned
away from the 12-o'clock position.
of the knob
provides 500 increments
(5 kHz, or 50 kHz in
AMIFM).
1
1
25 increments each, and one full turn
I I
I,
For fast tuning, press this button while
rotating the tuning knob or pressing the
UP
or
DOWN
button, to increase the
tuning rate ten times. See the table on
page 13 for all available steps. When
fast tuning is active,
FAST
is displayed
above the MHz digits. You can set the
function of this button to be either "press-
and-hold", or toggle
onloff, by holding it
while switching the transceiver on.
.
This button toggles I~cking of the
tuning knob to prevent accidental
frequency changes.
LOCK
appears
at the bottom left of the display win-
dow when locked (the knob can still
be turned, but it does nothing).
Press again to re-enable the tuning
knob. You can change the function
of this button to lock most of the
controls and buttons, instead of just
the tuning knob, by holding the but-
ton while switching the transceiver
on. In this case the
LOCK
display
will blink when enabled.
The outer
SQL
control sets the sig-
nal threshold at which receiver
audio is muted (and the
BUSY
LED
turns off), in all modes. This control is
normally kept fully CCW, except
when scanning, and during FM op-
eration. Scanning stops when the
squelch is open. See page 25.
The inner
NB
control adjusts the
blanking level when the noise
blanker is activated by the
indica-
torlbutton left of the label. If the con-
trol is set very far clockwise, receiver
audio may be distorted.
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