Question id 18 - Radio Navigation - ATPL - Airline Transport Pilot license

Audio: 75 MHz, 2 dashes per second. Visual: Blue light flashes.
Audio: 400 Hz, 2 dashes per second. Visual: Blue light flashes.
Audio: 3000 Hz, alternating dots and dashes. Visual: Amber light flashes.
Audio: 1300 Hz, alternating dots and dashes. Visual: Amber light flashes.