Operation Manual

60
10
OPTIONAL INSTALLATIONS/SETTINGS
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CCRR--228822
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SSTTAABBIILLIITTYY CCRRYYSSTTAALL UUNNIITT
By installing the CR-282, the total frequency stability
of the transceiver will be improved.
➀ Remove the bottom cover as shown on the oppo-
site page.
➁ Remove the 5 screws and 2 flat cables holding the
PLL unit in place.
➂ Remove the existing crystal unit.
➃ Put the CR-282 in the space available as shown in
the diagram.
➄ Adjust the reference frequency at L601 using a
frequency counter (60.00000 MHz).
➅ Return the shield case and bottom cover to their
original positions.
CR-282 frequency stability: ±0.5 ppm
(–30°C to +60°C;
–22°F to +140°F)
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IIFF ffiilltteerrss
Several IF filters are available for the IC-706MKIIG.
Choose a filter most appropriate to your operating
needs.
NNoottee::
After filter installation, specify the installed filter
using initial set mode (items 9, 10). Otherwise, the
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.
➁ Install the desired filter as shown in the diagram
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
ribbon
cable
existing
crystal
L601
PLL unit (bottom)
Spaces for 2 optional filters
available.
IC-706MKIIG.qxd 02.3.27 13:53 Page 60