Whilst at sea all vessels should maintain continuous watch on VHF CH 16. This facility allows the operator to monitor VHF CH 16 and any number of another VHF channels in a rapidly changing sequence. The receiver stays on the channel on which the transmission is being made. The channel on which stays the receiver could be manually advance to the next channel in the scan sequence or inhibited from the scan cycle.

Practice on VHF radio simulator

To switch on Scan function, press the Scan softkey. The Scan function cycles the VHF radio sequentially through each enabled channel, pausing when a transmission is received on any of the channels. The receiver stays on the channel on which the transmission is being made. The channel on which stays the receiver could be:
  • advanced: press Adv softkey to manually advance to the next channel in the scan sequence,
  • inhibited: press Inh softkey to inhibit the channel from the scan cycle (rather than pressing Adv softkey each cycle).

To exit Scan mode, press C key or 16 key.

Channels could be inhibited (and re-enabled) also when the Scan function is not running. Select the channel to be inhibited, then press and hold Scan softkey (double beep). To re-enable an inhibited channel into the scan cycle, select channel to be enabled then press and hold Scan softkey (double beep).



Switching Scan function on, advancing the VHF CH 16 at received transmission, and inhibiting it at the next scan cycle

Last modified: Saturday, 25 April 2020, 7:50 PM