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

5-1 Simple band scope

Sweep indicator
Band scope indicator
Frequency indicator mark
Sweep step indicator
INDICATOR
While the band scope is "sweeping," "
SWEEP
ceived 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 fre-
quency. Signal strength is relative to the S-meter level, S1 to S9, with each vertical dot in
BAND SCOPE
the band scope indicator equal to one segment of the S-meter. Signal activity is measured
INDICATOR
±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
FREQUENCY
frequency is outside of the sweep range, this indicator flashes. After changing the fre-
INDICATOR MARK
quency, push [F3] 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
SWEEP STEP
of the band scope indication is approx. equal to the selected sweep step.
1 ANT USB
1 3 5 7 9 20 40
S
Po
100%
20 50
ALC
SWR
1 1.5 2 3
P. AMP AGC
1
S
F1
Sweep start/stop
Sweep indicator

FUNCTIONS FOR RECEIVE

60
BLANK
VFOA
CH
F5
Sweep step selection
The band scope function allows you to visually check
signal condition around a specified frequency. The IC-
746's band scope function can be used not only in FM
mode but also when operating on HF bands.
DESCRIPTION
" appears; while stopped "
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.
While menu set 1 is displayed, push [F5](
select the band scope menu.
Rotate the tuning dial to select a frequency.
Push [F5]( ) one or more times to select a
sweep step.
• 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 im-
prove the readability of the band scope.
When rotating the tuning dial and finding a signal
you wish to communicate on, simple communicate
normally.
• If you want to return to the previous frequency (before ro-
tating the tuning dial), push [F3] for 2 sec.
While receiving, if you want to update the band con-
ditions using the selected sweep step, push [F1].
• Each push of [F1] starts and stops the sweep function.
5
" appears. Re-
) to
" appears and received
37