Q code

The Q code is a standardized collection of three-letter message encodings, all starting with the letter "Q", initially developed for commercial

radiotelegraph communication, and later adopted by other radio services, especially amateur radio. Although Q codes were created when radio used

Morse code exclusively, they continued to be employed after the introduction of voice transmissions

Although the majority of the Q codes have slipped out of common use, several remain part of the standard ICAO radiotelephony phraseology in aviation

The Q code is a standardized collection of three-letter message encodings, all starting with the letter "Q", initially developed for commercial radiotelegraph communication, and later adopted by other radio services, especially amateur radio. Although Q codes were created when radio used Morse code exclusively, they continued to be employed after the introduction of voice transmissions

Although the majority of the Q codes have slipped out of common use, several remain part of the standard ICAO radiotelephony phraseology in aviations

a) when set to a QNH altimeter setting, will indicate altitude

b) when set to a QFE altimeter setting, will indicate height

above the QFE reference datum

c) when set to a pressure 1 013.2 hPa, may be used to indicate flight level

להבנת נושא גבהים ולחצים בתעופה, ראה פרק תכונות האוויר במטאורולוגיה

Radio Navigation

להבנת הקודים שלעיל ראה נווטות מכשירית

Meteorology Q code

QAM - latest surface weather report

QBB - amount and base of significant cloud above station level

QFZ - Landing weather forecast

HAM-codes

Bearing QTE - True bearing of the aircraft from the station

What is my TRUE bearing from you ?

or

What is my TRUE bearing from ... (call sign) ?

or

What is the TRUE bearing of ... (call sign) from ... (call sign) ?

Your TRUE bearing from me is ... degrees at ... hours.

or

Your TRUE bearing from ... (call sign) was ... degrees at ... hours.

or

The TRUE bearing of ... (call sign) from ... (call sign) was ... degrees at ... hours

Class a – accurate within ±2°

Class b - accurate within ±5°

Class c - accurate within ±10°

Class d - accurate within more than ±10°

Position QTF - Triangulated Location

Position in relation to a point of reference or in latitude and longitude

Will you give me the position of my station according to the bearings taken by the direction-finding stations which you control?

Class a – accurate within 5Nm (9Km)

Class b - accurate within 20Nm (37Km)

Class c - accurate within 50Nm (92Km)

Class d - accurate within more than 50Nm

היה ומופיע מספר לאחר הגדרת ה - class משמעות זמן Z בו בוצע העיכון.