Ssb Operation - Icom IC-R71A Instruction Manual

. When the scanning frequency reaches the low edge
(14.200MHz), it automatically returns to the high edge
(14.300MHz) and continues scanning down to provide
endless scanning operation.
. While the SQUELCH is engaged, the squelch opens when
a signal is received and will stop the scanning automati-
cally on the frequency, and the signal can be monitored.
After approximately 10 seconds, the scan restarts from
the frequency the scan stopped at, continuing to the low
edge.
If the "SIG" indicator on the frequency display is lit
because the SQUELCH is not engaged, the scan does not
stop at any signals.
. Depressing the SCAN START/STOP button while the
scan is operating or during the 10 seconds of monitoring,
clears the scanning operation and the VFO goes back to
normal operation.
. By turning the set into the transmit mode, or rotating
the TUNING CONTROL, or pushing the VFO switch,
VFO/MEMORY switch, or one of the MODE SELECT
switches the scan stops and clears.
Turning Tuning Control
Scan restarts
(Frequency yumps to the high edge}
Scan stops
Turnmin
Tuning control
Scan restarts
High edge Low edge
. When the operating frequency is higher than the high
edge (14.300MHz) and SCAN START/STOP button
is pushed, the scan starts from the operating frequency
and scan down to the low edge, but it will return to the
memorized high edge frequency (14.300MHz) and
continue the scanning to the low edge. If the operating
frequency is below the low edge frequency (14.200MHz),
the scan frequency jumpes to the high edge frequency
(14.300MHz) and starts from the high edge.
Scan restarts
Scan starts
Turning Tuning Controt
(Frequency jumps to the high edge)
Scan stops
Scan restarts
Turning Tuning Controt
ifrom this] frequency)
High edge
Low edge
NOTE: The auto-stop functions with SSB or CW signals,
but the scan does not always stop at the exact
carrier frequency. When the scan stops on a signal,
tune into the signal for better reception by push-
ing a MODE switch for the proper mode (if dif-
ferent) and by rotating the TUNING CONTROL.
5-4-4 RESUMING SCAN
All scan modes are provided with the resume scan function.
When the scan has been stopped by the auto-stop function,
the scan will restart after passing a specified time (about
10 seconds).
SIGNAL RECEIVED
NO SIGNAL feet Wie ee eee
' b— Specified —4
S/S pushed time
Scan starts
t
S/S pushed
{Manual restarts)
t
S/S pushed
{Manual stop)
Auto-stop Scan restarts
5-5 SSB OPERATION
5-5-1 RECEIVING
After connecting an antenna, AC power cord, etc., set
kbobs and switches as follows.
POWER SWITCH OFF (OUT)
PREAMP/ATT SWITCH OFF
AGC TIMING SWITCH SLOW
NOISE BLANKER (NB)
SWITCH . OFF (OUT)
VFO SWITCH A (OUT)
Completely Counterclockwise
Completely Clockwise
Normal (Both switches are
OUT)
P.B. TUNE CONTROL Center (12 o'clock) position
NOTCH FILTER SWITCH OFF (OUT)
AF GAIN CONTROL
RF GAIN CONTROL
FILTER SWITCHES
Now push the POWER switch in. The meter lamp will be
illuminated, after a few seconds, a frequency and mode
memorized in the VFO A, and memory channel number
"01" will be shown on the frequency display.
In SSB operation there is both a USB (upper side band)
and an LSB (lower side band). In the HAM bands, LSB is
usually used on the 1.8, 3.5 and 7MHz bands, while USB is
usually used on the 10MHz band and above.
On the other bands, USB is usually used on any frequency.
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