Canadian Hydrographic Service Central and Arctic Region CA573136 - Quebec Harbour INDEX FOG SIGNAL FOG SIGNAL Mariners requiring horn to be turned on can activate it by clicking radio mike five times within a five (5) second window on channel 19 - 156.95 VHF. Horn can be activated with 1 watt power at 3NM range. Horn will stay activated for 30 minutes and can be reactivated as required. INDEX THE END © Fisheries and Oceans Canada 2013. Published by the Canadian Hydrographic Service. A licence is required from the Canadian Hydrographic Service (www.charts.gc.ca) to reproduce or distribute this work.