Which Frequency To Use

All VHF frequencies are between 118.0 and 136.0 for aircraft VHF Coms.

 

In the CTAF

Use CTAF frequency -Check ERSA FAC section

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From AIP 1.1

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From AIP 1.1

Outside CTAF 

Use flight information area frequency (FIA) if above 3000 or Multicom 126.7  if below 3000 – check your charts

Be aware Class E above Class G, often operate on separate frequencies. Green frequencies on the charts will indicate Class G , brown will indicate Class E

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From AIP 1.1

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From AIP 1.1

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From AIP 1.1

https://www.airservicesaustralia.com/aip/current/aip/enroute.pdf

Flight Information Services (FIS)

If you request flight following the ATC will help you avoid controlled airspace and advise you of traffic. You may be assigned a unique transponder code and radio frequency. It is advisable to lodge a flight plan if requesting flight following. See ERSA