Icom IC-7400 - Functions for Receive

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FUNCTIONS FOR RECEIVE
2001 NEW
■ Simple band scope
The band scope function allows you to visually check
signal conditions around a specified frequency. The IC-
7400’s band scope function can be used in any oper-
ating mode and frequency band.
The band scope measures receive signal conditions
over a specified range on either side of a selected fre-
quency in either VFO or memory modes.
q Rotate the tuning dial to tune a frequency.
w While M1 is selected, push [F5 SCP] to select the
band scope menu.
•Starts sweeping automatically with the previously se-
lected sweeping step.
• During sweep, received signals cannot be heard.
e Push [F5 STEP] several times to select the desired
sweep step.
r Push [F1] to start sweeping, then stop automatically
after sweeping.
•Push [F1] for 1 sec. to start continuous sweeping. In this
case, it is necessary to push [F1] to stop sweeping.
•During sweep operation “” appears and received
signals cannot be heard.
•If there is a lot of signal noise, turn the preamp OFF and
the attenuator ON to reduce the signal input level and
improve the readability of the band scope.
t When rotating the tuning dial and you finding a sig-
nal you wish to communicate on, then just commu-
nicate in the normal way.
•If you want to return to the previous frequency (before
rotating the tuning dial), push [F3] for 1 sec.
•If the selected frequency is set outside of the sweeped
range, flashes.
y While receiving, if you want to update the band con-
ditions, repeat steps e and r as above.
“ ” or “ ”
0.5k
STEP
Sweep indicator
Band scope indicator
Frequency indicator mark
Sweep step indicator
INDICATOR
Sweep
Band scope in-
dicator
Frequency
indicator mark
Sweep step
DESCRIPTION
While the band scope is “sweeping,” “” appears; while stopped “” appears. Received
audio is not emitted from the speaker while the band scope is “sweeping.”
Indicates the relative strength of signals and their location in relation to the center (displayed)
frequency. Signal strength is relative to the S-meter level, S1 to S9, with each vertical dot in the
band scope indicator equal to one segment of the S-meter. Signal activity is measured ±30
steps from the center frequency with each step equal to the selected sweep step.
After a sweep, indicates the relative position of the selected frequency. When the selected fre-
quency is outside of the sweep range, indicator flashes. After changing the fre-
quency, push [F3] for 1 sec. to automatically return to the center frequency.
Indicates the selected sweep step. 0.5, 1, 2, 5, 10, 20 and 25 kHz are selectable. Each dot of
the band scope indication is approx. equal to the selected sweep step.
“ ” or “ ”
F 1
F 2 F 3 F 4 F 5
F 1
F 2 F 3 F 4 F 5
Sweep step selectionSweep start/stop
O.5k
STEP
O.5k
STEP
Sweep indicator
IC-7400.qxd 02.4.2 11:35 Page 46