Section 6 Options Installation - Icom IC-730 Maintenance Manual

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
operating 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 signals,
and for receiver input and T/R control on the rear panel of IC-
730 for a VHF/UHF transverter.
6 – 2 PREPARATION
6 – 2 – 1 TOOLS FOR INSTALLATION
The following tools are needed for the installation of the
options.
Tools
Phillips
Screwdriver
Screwdriver for
2mm Hex-hole
Screw
Soldering Iron
(20W ~ 40W)
Solder
(rosin core)
De-soldering
Braid
Diagonal Cuter
Long-nose Pliers
6 – 2 – 2 PREPARATION
Before performing any work on the set, make sure that power
cord is unplugged from the transceiver.
IC-EX195 IC-EX203
O O
X O
X X
X X
X X
X X
X X
NOTE: O means NEEDED,
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 SSB 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 IF Pass Band continuously up to 1KHz 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
operation. When the MODE Switch of IC-730 is set in the
"CW-N" position, this filter is selected automatically.
IC-EX202 IC-EX205
O O
O X
X X
X X
X X
X X
X X
X means NOT NEEDED
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.
6 – 1
FL-44(A) FL-30
O O
X X
O O
O O
O X
O O
O O
FL-45
O
X
O
O
X
O
O