Functions For Receive; I Simple Band Scope - Icom IC-746PRO Instruction Manual

5

FUNCTIONS FOR RECEIVE

I Simple band scope

The band scope function allows you to visually check
signal conditions around a specified frequency. The IC-
746PRO's band scope function can be used in any op-
erating mode and frequency band.
INDICATOR
While the band scope is "sweeping," "
Sweep
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)
Band scope in- frequency. Signal strength is relative to the S-meter level, S1 to S9, with each vertical dot in the
dicator 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-
Frequency
quency is outside of the sweep range,
indicator mark
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
Sweep step
the band scope indication is approx. equal to the selected sweep step.
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
is selected, push [F5
band scope menu.
• Starts sweeping automatically with the previously se-
lected sweeping step.
• During sweep, received signals cannot be heard.
e Push [F5
] 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 "
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, " " or " "
y While receiving, if you want to update the band con-
ditions, repeat steps e and r as above.
47
] to select the
" appears and received
flashes.
Sweep indicator
Band scope indicator
Frequency indicator mark
Sweep step indicator
DESCRIPTION
" appears; while stopped "
indicator flashes. After changing the fre-
" " or " "
F 1 F 2
Sweep start/stop
F 1 F 2
Sweep indicator
" appears. Received
F 3 F 4 F 5
Sweep step selection
F 3 F 4 F 5