•
SECTION 6 OPTIONS INSTALLATION
6 - 1 DESCRIPTION
6 - 1 • 1 IC·EX195
(MARKER
UNIT)
This
unit
generates
marker
signals
to
calibrate IC·730's
operation frequency. The marker generator puts
out
ac-
curate 100KHz or 25KHz
signals
on the entire band,
and
gives
easy
and
accurate frequency calibration.
6·1·2
IC·EX203
(CW
AUDIO
FILTER
UNIT)
This
unit
is
an
audio
filter
which
gives
150Hz/6 dB
pass-
band in the
CW
operation. This
is
very effective in reducing
interference from
near·by
signals
and increasing
SN
ratio.
6
• 1
·3
IC·EX202
(LOA
UNIT)
This
unit
puts
out
the band control voltage
to
change
ope·
rating band automatically
for
external equipment
such
as
a linear amplifier and
an
antenna tuner.
6
• 1
·4
IC·EX205
(TRV
UNIT)
This
unit
provides terminals
to
put
out
a
low
level
RF
6 • 2 PREPARATION
6·2·1
TOOLS FOR
INSTALLATION
The following tools
are
needed
for
the installation
of
the
options.
Tools
IC-EX195
IC-EX203 IC-EX202
Philips
0 0 0
Screwdriver
Screwdriver
for
2mm
X
0
0
Hex-hole Screw
Soldering
Iron X X
X
(20W-40W)
Solder
X X X
(rosin core)
De-soldering
X X X
Braid
Diagonal
X
X
X
Cutter
Long-nose
X X X
Pliers
signals,
and
for
receiver input and
T/R
control on the rear
panel
of
IC-730
for
a
VHF/UHF
transverter.
6·1·5
FL-44(A) (455KHz ssa CRYSTAL
FILTER)
This
filter
is
for
replacement
of
the 455KHz mechanical
filter
installed in the 2nd IF circuit,
and
has
a higher
shape
factor
and
provides more selectivity.
6·1
·6
FL·30
(SSB
PASS
BAND
TUNING CRYSTAL
FILTER)
This
filter
provides the
Pass
Band
Tuning system which
narrows the
I F
Pass
Band
continuously up
to
1 KHz either
from upper
side
or
lower
side.
This
is
very effective in
reducing interference from nearby
signals.
6·1·7
FL-45
(CW
NARROW CRYSTAL
FILTER)
This
filter
provides a 500Hz/6 dB
pass
band in the
CW
ope-
ration.
When
the MODE Switch
of
IC-730
is
set
in the
"CW·N"
position, this
filter
is
selected automatically.
IC-EX205
FL-44(A)
FL-30
FL-45
0 0
0
0
X
X X
X
X
0
0
0
X 0 0
0
X 0
X
X
X
0
0
0
X 0 0
0
NOTE: 0
means
NEEDED, X
means
NOT NEEDED
6 - 2 - 2
PREPARATION
Before performing any
work
on the
set,
make
sure
that
power cord
is
unplugged
from
the transceiver.
6-1
Remove
the
top
cover
by
unscrewing the
four
screws
on the
top
and the
two
screws
at
each
side, while taking
care
not
to
damage
the internal
speaker
and unplug its connector.
for
free
by
RadioAmateur.eu
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