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known that the information needs to be written down, speak slower.
ATC controllers can be very bad at this.
- Hesitation
Avoid hesitation sounds such as er and um!
- Abbreviations
Some abbreviations, which by common and frequent use are
understood, need not be spelled out e.g.ILS, VOR, NDB, TACAN, GPS,
SELCAL, Q-CODES (QFE, QNH, QDR)
- Long Messages
If you have a long message pause occasionally. This allows time to check
that the frequency is still clear and gives time for receiver to request
repetition or clarification of parts not received.
7.2 Radiotest Procedures
Before flight, it is wise to ensure that your radios will transmit and receive
properly. In order to do this a standard procedure is followed for each radio
requiring a test.
The meaning of this scale is as follows:
Readability Scale Meaning
The form of a test transmission should be as follows:
7.3 Direction Finding (DF)
7.3.1 Q-codes
Q Codes were used extensively when much of the communication work
(especially HF-long range) was done in morse code. QNH was quicker to “key in”
GEN radio 2025 - Midtjysk Flyveskole 32
