Option Installations; Tone Squelch Unit - Icom IC-820H Instruction Manual

45
13 OPTION INSTALLATIONS
| UT-50 TONE SQUELCH UNIT
The UT-50 TONE SQUELCH UNIT allows you to
operate the tone squelch and tone scan. 2 units can
be installed in the transceiver if you want to use
these functions simultaneously on both the main and
sub bands. |
- One unit is sufficient for alternate operation of these
functions on each band.
() Remove the top and bottom covers as described
on p. 44.
(2) Plug UT-50(s) to J20 or J21 on the MAIN unit as
shown at right.
- When installing one unit, either connector is OK.
@) After installing the unit(s), replace the top and
bottom covers.
# FL-132 CW NARROW FILTER
The transceiver has a CW-Narrow mode to provide
better S/N (signal-to-noise), or to reject nearby inter-
ference. To use the CW-Narrow mode, an optional
CW narrow filter is necessary.
Y NOTE: The CW-Narrow mode is available for
the main band only, therefore, satellite operation
(sub band for downlink) cannot be selected in
CW-Narrow mode.
OGG
Passband width
eee
Built-in filter 2.3 kHz 4.2 KHz
FL-132
@) Remove the top and bottom covers as described
on p. 44.
(2) Remove 14 screws from the MAIN unit as snown
at right.
(3) Slide the MAIN unit forward slightly to free the
ACC socket from the rear panel.
(4) Lift up the MAIN unit from the rear panel side.
() Install the FL-132 in the proper position.
(6) Cut the filter leads, keeping 2-3 mm leads from
the bottom of the MAIN unit.
@) Solder the leads.
(8) Replace the MAIN unit and top/bottom covers.