ICOM 375410 Manuale Utente
21
3
BASIC OPERATION
201802
BASIC MANUAL
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Band Scope function
Use the Band Scope function to visually search for a specified frequency range around
the displayed frequency. You can use this function to search for a signal, and see the
relative received signal strength level.
The Band Scope function has 2 sweep types.
•Single Sweep:
Searches the specified frequency range only once. The Single
Sweep starts from the lower frequency and the sweep stops after
reaching to the upper frequency.
•Continuous Sweep: Repeatedly searches the specified frequency range.
The receiver’s sweep bandwidth is ± 15 × the tuning step number, centered on the
displayed frequency.
L
The ± 15 times is a fixed value.
Example:
The displayed frequency is 146.000 MHz and the tuning step is set to 5 kHz. Therefore,
the sweep range is between 145.925 MHz (lower edge frequency) and 146.075 MHz
(higher edge frequency).
See the calculation below.
Lower edge frequency = –15 × 5 kHz
= –75 kHz (–0.075 MHz)
Higher edge frequency = +15 × 5 kHz
= +75 kHz (+0.075 MHz)
•The displayed (center) frequency is 146.000 MHz
•The lower (start) frequency is 145.925 MHz
(= 146.000 MHz – 0.075 MHz)
•The higher (stop) frequency is 146.075 MHz
(= 146.000 MHz + 0.075 MHz)
Example: A strong signal is received on 146.025 MHz.
(Tuning step: 5 kHz)
Sweep marker
146.035MHz
Band scope display
Strong level
Weak level
Center frequency
(146.010)