ICOM IC-706MKIIG User Manual
60
10
OPTIONAL INSTALLATIONS/SETTINGS
■ C
CR
R--2
28
82
2
H
HIIG
GH
H
--
S
ST
TA
AB
BIIL
LIIT
TY
Y C
CR
RY
YS
ST
TA
AL
L U
UN
NIIT
T
By installing the CR-282, the total frequency stability
of the transceiver will be improved.
of the transceiver will be improved.
➀
Remove the bottom cover as shown on the oppo-
site page.
site page.
➁
Remove the 5 screws and 2 flat cables holding the
PLL unit in place.
PLL unit in place.
➂
Remove the existing crystal unit.
➃
Put the CR-282 in the space available as shown in
the diagram.
the diagram.
➄
Adjust the reference frequency at L601 using a
frequency counter (60.00000 MHz).
frequency counter (60.00000 MHz).
➅
Return the shield case and bottom cover to their
original positions.
original positions.
CR-282 frequency stability: ±0.5 ppm
(–30°C to +60°C;
–22°F to +140°F)
■ IIFF ffiilltteerrss
Several IF filters are available for the IC-706MKIIG.
Choose a filter most appropriate to your operating
needs.
Choose a filter most appropriate to your operating
needs.
N
No
otte
e:: After filter installation, specify the installed filter
using initial set mode (items 9, 10). Otherwise, the
installed filter will not function properly.
installed filter will not function properly.
FL-100
CW NARROW FILTER
500 Hz/–6 dB
FL-101
CW NARROW FILTER
250 Hz/–6 dB
FL-103
SSB WIDE FILTER
2.8 kHz/–6 dB
FL-223
SSB NARROW FILTER
1.9 kHz/–6 dB
FL-232
CW/RTTY NARROW FILTER
350 Hz/–6 dB
➀
Remove the top cover as shown on the previous
page.
page.
➁
Install the desired filter as shown in the diagram
below.
below.
• These filters can be installed in either direction.
➂
Replace the top cover.
Filter
PLL unit
CR-282
Reference freq. check point
(60.00000 MHz)
ribbon
cable
cable
ribbon
cable
cable
existing
crystal
crystal
L601
PLL unit (bottom)
Spaces for 2 optional filters
available.
available.
IC-706MKIIG.qxd 02.3.27 13:53 Page 60