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

Further Details In AIP

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

Change Of Frequency

As you cross green or brown lines on the VNC chart while flying, the frequencies may change. E.g. below where it would change in class G (green) from 125.75 to 120.55 if flying east, or from 120.55 to 125.75 if flying west.

 

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

Read More about Flight Following in the PDF

 

Monitoring Or Broadcasting On Dual Frequency Radios

Often when outside the CTAF it is wise to monitor two frequencies.

Examples:

When flying say 15-25nm from a CTAF it may be wise to monitor both CTAF and Area Frequency.

When flying outside CTAF and near a smaller aerodrome with no CTAF it is wise to monitor both 126.7 and Area Frequency.

When near the boundary of a frequency change, monitor both frequencies.