Icom ID-52A Advanced Manual english - Page 33

4 FM RADIO OPERATION Basic operation DDSetting a squelch level The squelch enables the audio to be heard only while receiving a signal that is stronger than the set level. A higher level blocks weak signals, which enables you to receive only stronger signals. A lower level enables you to hear weak signals. The squelch level that is set on the FM RADIO window is only for the FM Radio. While holding down [SQL], rotate [DIAL] to select the squelch level. DDUsing the Monitor function The Monitor function is used to listen to weak FM Radio signals without changing the squelch setting. While holding down [SQL], the transceiver monitors weak signals on the frequency. •• The squelch opens. Automatic squelch Maximum squelch level LLInformation •• Options: "OPEN," "AUTO" (default), and "LEVEL 1" ~ "LEVEL 3" •• "LEVEL 1" is loose squelch (for weak signals), and "LEVEL 3" is tight squelch (for strong signals). •• "AUTO" is an automatic level adjustment using a noise pulse counting system. •• "OPEN" is the continuously open setting. The first segment blinks. TIP: You can set the Monitor Hold function on the MENU screen. The transceiver opens or closes the squelch each time you push [SQL]. ([MENU] > SET > Function > Monitor) 4-5