Icom ID-5100A Full Instruction Manual - Page 29

Previous view 2 BASIC OPERATION Band Scope function Use the Band Scope function to visually search a specified frequency range around the displayed frequency. You can use this function to search for a signal, and see the received signal strength level. The Band Scope function has two sweep types, Single sweep and Continuous sweep: • A Single sweep searches the specified frequency range only once. • A Continuous sweep repeatedly searches the speci- fied frequency range. The transceiver sweeps in the following ranges centered on the displayed frequency. • The sweep steps may differ, depending on the tuning step. Single watch mode: ±38 × Tuning step Dualwatch mode: ±18 × Tuning step ('±38' and '±18' are fixed.) For example in the Dualwatch mode, if the display frequency is 146.010 MHz and its tuning step is 20 kHz, the sweep range is between 145.650 MHz (lower frequency) and 146.370 MHz (higher frequency). (146.010 MHz±0.36 MHz) See the calculation below. +18 × 20 kHz = +360 kHz (0.36 MHz) -18 × 20 kHz = -360 kHz (-0.36 MHz) Upper frequency: 1 46.370 MHz (146.010 MHz + 0.36 MHz) Lower frequency: 1 45.650 MHz (146.010 MHz - 0.36 MHz) Example: A strong signal is received on 146.030 MHz. Band Scope display The signal on 146.030 MHz Strong level Weak level Center frequency Sweep marker (Display frequency: 146.010 MHz, Tuning step: 20 kHz) About the sweep steps: The specified tuning step is used during a sweep. If the tuning step is set too wide, the signals in the sweep range may not be displayed (they may be skipped), even if they are strong signals. Thus we recommend that you set the tuning step to 20 kHz or less to use the Band Scope function. See page 2-6 for tuning step selection details. • For Single watch operation, you can hear the displayed frequency's audio during a sweep. • The audio output during a sweep can be turned OFF in the MENU screen. Sounds > Scope AF Output (p. 12-61) DDSweep operation Example: Continuous sweeps centered on 146.010 MHz qqRotate [DIAL] to set 146.010 MHz. wwTouch the Function group icon one or more times. • Selects the F-3 menu. eeTouch [SCOPE]. • Opens the Band scope setting window. rrTouch "Continuous Sweep." • Returns to the frequency display and starts continuous sweeping. • While sweeping, touch [≈] to stop the sweeping. Touch again to start single sweep. • When the sweeping stops, touch [≈] for 1 second to restart continuous sweeping. While continuous sweeping ttWhen the sweeping stops, rotate [DIAL] to move the sweep marker to a detected signal. • You can hear the signal audio. When the sweeping stops, move the sweep marker to a detected signal to hear the signal audio. yyTo turn OFF the Band Scope function, touch [SCOPE]. • Opens the Band scope setting window. uuTouch "Scope OFF." In the Band scope setting window, touch "Center Recall" to set the sweep marker to the center frequency. 2-14