Icom IC-751A - Page 12

©DIAL
LOCK
This
switch
electronically
locks the
IC-751A on the
currently dis-
played
frequency
and
deactivates the
TUNING
CONTROL. This
function is
useful while rag
chewing or
for mobile
operation
after
the IC-751 A is
set to
the desired
frequency.
Disengage
the dial lock
by
pushing and
releasing
the
switch.
Push this
switch to
increase
the
tuning
rate
to
1kHz while in any
operating
mode.
The
100Hz digit
on
the frequency
display
clears
to
"0"
simultaneously.
Push and
release the
switch
again
to
return
to
the
normal
tuning, rate.
Refer
to
TUNING
CONTROL
description
above.
(§)TS
INDICATOR
(8)DIAL
FUNCTION SELECT
SWITCH
[DFSl
(g)DFS INDICATOR
@BAND
SELECT SWITCH
[BAND]
@BAND
SELECT INDICATOR
(g)
INCREMENTAL
TUNING
CONTROL
[RIT/^TXll
ATX
CL
EZl
D
@NOTCH
FILTER CONTROL
PBT-S)- NOTCH
NOTCH
Illuminates
when
the TS SWITCH
function
is
activated.
While
using the
VFO mode, push
this switch IN
to
lock the displayed
VFO operating
frequency, and rotate
the TUNING
CONTROL to
change the displayed
memory channel
number.
While using
the
MEMORY CHANNEL
mode,
push this switch
IN
to
lock
the
displayed
memory channel,
and rotate
the
TUNING
CONTROL to
change the
displayed
frequency.
Illuminates
when the
DFS SWITCH
function is activated.
Push this
switch and rotate
the TUNING
CONTROL
In order
to
change your
band of operation.
In the
HAM BAND mode, the
IC-751
A
jumps to a factory set
initialization
frequency on
each of
the
amateur bands as
the TUNING
CONTROL is
rotated. In
the
GENERAL
COVERAGE
mode, the operating
frequency is
changed
in
1MHz
steps.
Illuminates
when the
BAND SELECT
function is
activated.
This
control shifts
the receive or
transmit
frequency
by
up
to
9.9kHz
to
either
side of the frequency
indicated on
the main
fre-
quency
display. Refer
to
the RIT
and
idTX
SWITCH descriptions
below.
Rotating this
control
clockwise (+ direction) raises
the receive or
transmit
frequency and counterclockwise
(—
direction)
lowers the
frequency.
The shifted amount
and direction is
indicated
with
smaller
numerals to
the right of the main
frequency display.
When both
the RIT and idTX
circuits are
ON, both
the
receive and
transmit
frequencies may be
shifted together
to
either side
of
the
displayed
frequency.
This control shifts
the notch
filter frequency when the
NOTCH
SWITCH
is ON. Adjust
the control
to
minimize interference.
Refer
to
the description
for the
NOTCH SWITCH below and see
SECTION
7
-
8
for more information.
-
8
-