Spectrum Scope Screen; (For Automatic Antenna Selection) - Icom IC-756 Instruction Manual

4
RECEIVE AND TRANSMIT

Spectrum scope screen

This function allows you to display the relative
strengths of signals around the center frequency. The
span can be set to ± 12.5 kHz, ± 25 kHz, ± 50 kHz and
± 100 kHz. Ideal for monitoring band conditions in an
instant.
q If the start up screen is not selected (if [F-5]'s func-
tion is [EXIT]), push [F-5] one or more times to exit.
w Push [
SCOPE] to select the scope screen.
(F-1)
e Push [
SPAN] one or more times to select the
(F-1)
scope span.
Band memory
The transceiver covers 0.1–60 MHz over 10 bands.
Each band key has a band memory which can mem-
orize a selected antenna (ANT1, ANT2, ANT1/
RX antenna and ANT2/RX antenna). When you
change the operating frequency beyond a band, the
previously used antenna is automatically selected for
the new band. This function is convenient when you
use 2 or 3 antennas.
To use the band memory, enter set mode and confirm
that "AUTO" is selected as the [ANT] switch item. (p.
58)
• When OFF is selected, the [ANT] switch does not function and
[ANT1] is always selected.
• When MANUAL is selected, the [ANT] switch functions, however,
band memory does not function. In this case, you must select an
antenna manually.
• When AUTO is selected (default setting), the antenna tuner
ON/OFF condition is also memorized in the band memory.
• When AUTO or MANUAL is selected, the antenna tuner ON/OFF
condition is consistent with the [ANT] switch.
37
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14.205.00 14.205.00

(for automatic antenna selection)

r Push [
MARKER] to select the marker or turn
(F-2)
the marker OFF.
- SUB MARK displays the marker at the sub readout fre-
quency.
- TX MARK displays the marker at the transmit fre-
quency.
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Appears when the Sub readout
marker is out of range. or TX marker
t Push [
MAX-H] to hold peak levels or not.
(F-3)
y Push [
HOLD] to freeze the current spectrum
(F-4)
waveform.
u Push [
EXIT] to exit the scope screen.
(F-5)
• Antenna switch selection example
Under the following condition, "AUTO" should be se-
lected as the [ANT] switch set mode item.
- When you use 2 antennas.
Under the following conditions, "MANUAL" should be
selected as the [ANT] switch set mode item.
- When using 1 antenna.
- When using the EX-627
for more than 3 antennas (except for receive
LECTOR
antenna).
- When using an external antenna tuner.
Appears when the
marker is out of range.
HF AUTOMATIC ANTENNA SE-