What is the correct way of expressing visibility ?4
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What is the transponder code for radio communication failure:4
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Which of the following frequencies is an international emergency frequency:4
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Which frequency shall be used for the first transmission of an urgency call:4
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To which frequency bands do the frequencies 118.000 - 136.975 MHz of the Aeronautical Mobile Service belong?4
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What is the frequency separation between consecutive frequencies in the VHF band:4
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Under which of the following circumstances may you expect a solid reception of the TOWER frequency 118.2 MHz:4
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Which is the maximum distance at which you might expect solid VHF contact over flat terrain at flight level 50:4
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