Icom IC-78 Instruction Manual - Page 38

6 EXTRA FEATURES D Channel clearing If un-necessary channels are available, the stored frequency can be cleared. The cleared channels are skipped in the channel mode operation, q Select desired channel in channel mode. (p. 13) w Enter VFO mode by pushing [FC] for 1 sec. • Channel selection with [√ DN]/[UP ∫] is also possible in the VFO mode. e Push [0], then [ENT]. r Push [ENT] for 1 sec. (3 beeps are emitted), to clear the selected channel. • The " " indicator appears. Note: Blank channels cannot be selected with [√ DN]/[UP ∫], and channel selector; can only be selected with the keypad. Appears when cleared. s 2-Tone alarm operation The 2-tone alarm is used for instant emergency operation. When the 2-tone alarm function is activated, the call channel (2182 kHz, distress channel, is pre-programmed) is selected automatically, and emits a distress alarm. D Operation ¯ Push [TONE] to emit a distress alarm signal for a specified time period from the speaker only. • " " appears. • Push [TONE] again to cancel the distress alarm signal emission. • Push [CALL] to return to previous condition. ¯ Push [TONE] for 1 sec. to transmit a distress alarm or alarm testing signal for a specified time period. • " " appears with the transmit indicator. • Push [TONE] again to cancel the distress alarm signal transmission. • Push [CALL] to return to previous condition. [TONE] 36