Good operating practices for HF users fact sheet

The following are the recommended operating practices for users of high frequency (HF) radiocommunications.

• Choose the lowest licensed frequency that is likely to be effective (see guide to frequency bands over). If unsuccessful, try the next higher frequency.
• Listen before transmitting to ensure the channel is not already in use.
• Transmit using the call sign of wanted station and your own call sign. For example:
  "VXX Charleville base this is VXX 400 Mobile 1234" (Repeat call if necessary)
• Keep conversation brief and to the point. Offensive language should be avoided. Remember that your transmissions can be overheard by other stations. Appropriate on-air behaviour must be observed.
• Use the word "OVER" at the end of each part of a conversation. This indicates to the other station that it is their turn to transmit.
• Use the word "OUT" at the end of your communications. This indicates to other stations that the channel is free.
• Do not respond to calls not intended for your station, because this increases congestion.
• Use selective calling facilities with discretion. Selective calling may be annoying to other users, and it has no priority over other traffic.
• Use telephone interconnect facilities responsibly.
• Use the phonetic alphabet and speak slowly when communication is difficult. Accuracy is important.

• Any broadcasts made from base stations about road and weather information should concern a localised area only. Lower frequencies ought to be used and broadcasts should be kept as short as possible.

Remember:

• Choose lowest licensed frequency.
• Listen before you talk.
• Identify yourself.
• Make calls correctly.
• Use channels properly.
• Use appropriate language.
• Be brief at all times.

The phonetic alphabet

* The syllables to be emphasised are underlined

Approximate guide to frequency bands and ranges