Icom IC-910H - Unit; Cw Narrow; Filter

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OPTION INSTALLATIONS
The IC-910H has a CW narrow mode to provide better
S/N (Signal-to-Noise), or to reject interference. To op-
erate the CW narrow mode, an optional CW narrow fil-
ter is necessary.
NOTE: For CW narrow mode during satellite opera-
tion, the FL-133 (for SUB band filter) is necessary
since the SUB band circuit is used for receiving, al-
though the MAIN band display shows receive fre-
quency.
q Remove the bottom cover as shown in the diagram
on p. 71.
 •RemovetheUX-910ifyouhaveinstalledit.(p.73)
 •Disconnectthecablesandatcableswhenyouhavein-
stalled the UT-106. (p. 73)
w Disconnect the connection cable connectors from
J51, J501, J651 and J1051 on the MAIN unit.
e Remove the 2 clips and the 6 screws from the MAIN
unit.
WARNING!
BE CAREFUL not to pinch your finger with the
clip.
Clips
J51
J651
Red
Gray
J501
J1051
MAIN unit
PLL unit
rDisconnecttheatcableconnectorsfromJ1101,
J1301 and J1351 on the MAIN unit, then lift up the
MAIN unit as below.
J1351
J1301
J1101
Main unit
Slide the MAIN unit to the
front panel side, then lift it up
as the arrow.
Flat canbles
t Install FL-132 or FL-133 to the specified position on
the MAIN unit.
FL-132
(MAIN)
FL-133
(SUB)
y Solder then cut the leads, keeping 2–3 mm (
1
⁄8″) of
the leads from the bottom of the MAIN unit.
(MAIN)
(SUB)
u Return the MAIN unit and clips to their original posi-
tions.
i Re-connect the connection cable connector to J51,
J501, J651 and J1051 on the MAIN unit.
o Re-connect the flat cable connector to J1101,
J1301 and J1351 on the MAIN unit.
 •ReturntheUX-910ifyouhaveremovedit.(p.73)
 •Re-connectthecablesandatcablesforUT-106when
you have disconnected them. (p. 73)
!0 Return the bottom cover to the original position.
n FL-132/FL-133 CW NARROW FILTER
FILTER
Passband width
at –6 dB at –60 dB
Built-in filter 2.3 kHz 4.2 kHz
FL-132/133 500 Hz 1.34 kHz