Icom IC-775 - Page 7

•
OPTIONAL
FILTER
After
installing
optional
filters, the
transceiver
has
3*
kinds
of
selectivity for 2nd
and 3rd IF
filters to provide better
S/N
(signal-to-noise
ratio), or
to reject
nearby interference.
*
FM mode: 2
kinds of
selectivity
Following
optional filters are
available.
IF
Filter
Passband
width
Used
selectivity
2nd
FL-101
250
Hz/-6dB CW
nar.
FL-102
6.0
kHz/-6dB
SSB wide,
AM med., FM
nar.
FL-223
1.9 kHz/-6
dB SSB
nar.
3rd
FL-53A 250
Hz/-6dB
CW nar.
FL-222
1.9 kHz/-6
dB
SSB nar.
When only
1 filter
is installed
for selectivity, such as a
FL-101
installed but
no FL-53A
installed, optimum
perform-
ance
cannot be
obtained for the
selectivity and the
twin
PBT
function does not
operate
correctly. Both filters,
such
as FL-101
and FL-53A,
should be installed.
FILTER
SELECTION
After the
filter(s) are
installed,
activate
the
optional
m
filter(s) in
H-set
mode. If this is
not correctly
set, the
^
installed
filter(s)
cannot be selected.
I
®
Remove the top
and bottom covers
as described on
p.
2-1.
@
Insert the
filter(s) to the
proper position. The locations
are shown in the
figures below.
-The FL-53A
and FL-222 must be
installed in the proper
direction.
-The FL-101,
FL-102 or
FL-223 work
regardless of
the
direction they are
installed in.
d)
Replace
the
top and
bottom covers.
FL-102 (or FL-101, FL-223)
Installation
•
UT-66
VOICE
SYNTHESIZER
UNIT
The
UT-66
announces
the operating
frequency or
selected
mode in a
clear,
electronically-generated
voice (in English
or
Japanese).
®
Remove the top
cover as described on
p.
2-1
.
(D
Plug the UT-66
into
J1
on
the MAIN
unit (backside of
the S/RF
meter) as
shown in the
figure at right.
@
Replace the top
cover.
0
Set the
language and
speech
speed in H-set mode.
2-3