Icom IC-751 [23/37] 4 scanning operation
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Icom IC-751 [23/37] 4 scanning operation

Icom IC-751 [23/37] 4 scanning operation

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When the set is scanning in the normal memory scan mode push the MODE SELECTIVE switch in at the moment that your desired mode is displayed on the display 5 4 3 PROGRAMMED SCAN This is to scan between two desired frequencies which are memorized in the memory channels 1 and 2 CAUTION The programmed scan does not start when the contents of memory channels 1 and 2 and frequency display differ from which are described below This function is effective in the VFO mode and when the DFS switch is pushed in to change the operating frequency in the MEMORY CHANNEL mode 1 The same operation mode HAM BAND or GENERAL COVERAGE mode should be stored into memory channels 1 and 2 To start the scan the set should be in the same operation mode as the memory channels 2 Stored frequencies in memory channels 1 and 2 should be in the same band if the HAM BAND mode is stored in both memory channels 1 and 2 To start the scan the set should be in the HAM BAND mode and in the same band as the memory channels 5 3 2 MEMORY CHANNEL SELECTING In the MEMORY CHANNEL mode or when the DFS switch is pushed in to change the displayed memory chan nel number in the VFO mode by depressing the UP or DN down button on the microphone continuously the operating MEMORY CHANNEL or displayed channel number is changed up or down respectively every two seconds 5 4 SCANNING OPERATION 1 Memorize the frequencies of the high and low edges of the desired scanning range into the memory channels 1 and 2 Regardless of which channel the higher frequency is memorized in the scan starts from the high edge of the range For example 14 200MHz is in the memory channel 1 and 14 300MHz in the channel 2 The IC 751 provides various scanning operations Please read the following instructions carefully to fully enjoy the IC 751 s many capabilities 5 4 1 MEMORY SCAN This is used to scan all programmed memory channels continuously 2 Place the unit in the VFO MODE and select operation mode the same as the channels 1 and 2 and a VFO you desire Pushing the SCAN START STOP button starts the scan from the high edge 14 300MHz to the low edge 14 200MHz The scanning frequency increments depend on the TUNING RATE SELECT switch setting 1 Program your desired frequencies into memory channels 2 Select a memory channel programmed with a frequency The scan cannot start from a blank channel 3 Depress the SCAN START STOP button and the fre quency starts scanning the programmed frequencies in the memory channels from the highest channel to lowest At this time the scan skips blank channels if any 3 When the scanning frequency reaches the low edge 14 200MHz it automatically returns to the high edge 14 300MHz and continues scanning down to provide endless scanning operation 4 If the SQUELCH is engaged the scan stops when the squelch is opened and receives a signal This restarts after passing a specified time 4 While the SQUELCH is engaged the squelch opens when a signal is received and will stop the scanning automati cally on the frequency and the signal can be monitored After approximately 10 seconds the scan restarts from the frequency the scan stopped at continuing to the low edge If the RECEIVE indicator is lit because the SQUELCH is not engaged the scan does not stop at any signals To stop scanning without opening the squelch depress the SCAN START STOP button Depress it again to restart the scanning 5 4 2 MODE SELECTIVE SCAN In the memory scan mode by pushing the MODE SELEC TIVE SCAN switch in the scan scans only on channels having the desired operating mode 5 Depressing the SCAN START STOP button while the scan is operating or during the 10 seconds of monitoring clears the scanning operation and the VFO goes back to normal operation To be in this scan mode first select a channel that has your desired mode second push the MODE SELECTIVE switch in then the SCAN START STOP button 20

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