Icom IC-751A - Section 10 10- Options Installation; 10-1 Filters

SECTION TO OPTIONS
INSTALLATION
10-1
FILTERS
•
FILTER CHARACTERISTICS
WARNING:
Disconnect
the
power
cable
from
the IC-751A
be-
fore
performing
any
work.
MODE FILTER
CHARACTERISTICS
Center
Frequency
—
6dB
point
—
60dB
point
CW/RTTY FL-52A
455kHz
500Hz
1kHz
CW/RTTY FL-53A
455kHz
250Hz
480Hz
CW/RTTY
FL-63A
9.0106MHz
250Hz
800Hz
CW/RTTY
*FL-32A
9.0106MHz
500Hz
1.34kHz
SSB
FL-70
9.0115MHz
2.8kHz
5kHz
SSB
*FL-80
9.0115MHz
2.6kHz
3.8kHz
SSB
*FL-44A
455kHz
2.3kHz
4.2kHz
AM FL-33
9.0100MHz
6kHz
20kHz
NOTE:
The filters marked
with
a
are supplied
with the
IC-751
A.
•
FILTER
COMBINATIONS
MODE
FILTER
SWITCH
9MHz
FILTER
455kHz
FILTER
STANDARD
BANDWIDTH
P.B.T.
USB/LSB
OUT
FL-80
FL-44A
2.3kHz
YES
IN FL-80 CFJ455K5
2.6kHz
YES
CW/RTTY
OUT
FL-32A
FL-44A
500Hz
YES
IN
FL-80
FL-44A
2.3kHz
YES
CW/RTTY
NARROW
OUT FL-32A
FL-52A/
FL-53A
500Hz/
250Hz
YES
IN
FL-80
FL-52A/
FL-53A
500Hz/
250Hz
IF
SHIFT
AM
OUT THROUGH CFW455HT 8kHz
NO
IN THROUGH CFJ455K5 3kHz
NO
FM
OUT THROUGH CFW455E
15kHz
NO
IN
THROUGH CFW455E 15kHz
NO
•
FILTER
SYSTEM
(MODE
SWITCH}
CFW455HT
•
FILTER
REVERSE SWITCHES The
FILTER SWITCH on
the front
panel of
the
IC-751A
selects
between
two
receive filter systems
for the SSB,
CW,
RTTY
or
AM
mode when
it
is
switched between
the IN and
OUT
positions.
The
IN/OUT
relationship of the
FILTER SWITCH
may
be
reversed by
using
the internal
FILTER
REVERSE
SWITCHES.
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