Comm 1 is your primary communication radio used to talk to the tower or other aircraft. Comm 2 is you back up radio. You have 2 frequencies in Comm 1 and Comm 2. The one we use is our active frequency. the standby frequency is the place we put our next frequency we are going to use. Meaning if we are told to change frequency to Perth Approach, we place the frequency in and when it's time to turn to the frequency, we just have to click the white button STBY to change the frequency.

Navigation radios, Nav 1 and Nav 2, are on the other side of the Comm radios. Nav 1 is used for ILS approaches and for tracking inbound and outbound VOR stations. Did you know that Nav 1 and Nav 2 used together you can triangulate you location using 2 VOR stations?
RADIO PROCEDURES
SUGGESTIONS
1) Roger, Over, Copy - Try not to use these terms, real pilots never do. If you want to acknowledge about an ATC transmission (particularly one that does not read back, simply say your callsign. Only controllers can say the word "roger" to acknowledge when a pilot has read back a clearence.
2) Clearences - When you request a clearence, you must say your complete callsign, the destination airport, and the flight level.
3) What should and should you not read back? You do not ned to read back word-by-word all the controller says. Do NOT read back winds, but always the altimeter settings and all and each clearences. Otherwise, the controller will force you to do it that way. You can read back in your own style, but mainly be concise and avoid unnecessary verosity.
4) When should you speak? Try not to step on other pilots. When a controller transmits a message to another pilot, keep attention until he/she answers.
5) Callsigns: Always use your complete callsign. You can abbreviate it only when the controller does it first.
6) What do you not need to report? (unless it's the controllers requirement) You should report your position, outer marker, gear down, speeds, and field/runway in sight.
7) What do NEED to report? You should report the altitude of the cloud layers, system failures, altitude and heading changes, icing, wind effects, braking failures, missed approaches and going around.
ABBREVIATIONS
AGL - Above Ground Level
ATIS - Automatic Teminal Informaton Service
ATC - Air Traffic Control
CAV-OK - Meteo better than expected                              (AGL500ft, vis>6nm)
ADF - Automatic Direction Finder
DME - Distance Measurement Equipment
ETA - Estimated Time of Arrival
IAS - Indicated Air Speed
IFR - Instrumental Flight Rules
ILS - Instrument Landing System
IMC - IFR Meterological Conditions
ISA - International Standard Atmosphere
MET - Meterology/Meterological
MSL - Mean Sea Level
NDB - Non-Directional Beacon
PAPI - Precision Approach Path Indicator
QDM - Magnetic heading to an ADF (w/o                    wind)
QFE - Altimeter setting to indicate altitude ASL
QNH -Altimeter setting to indicate altitude MSL
SID - Standard Instrumental Departure
STAR - Standard Terminal Arrival
TAS - True Air Speed
TCA - Terminal Control Area
VASI - Visual Approach Slope Indicator
VFR - Visual Flight Rules
VMC - VFR Meterological Conditions
VOR - VHF Omni-directional Range
VOLMET - Meterological Information during                     Flight
OMMISION
Surface
Degrees
Knots
Visibility
Cloudiness
Altitude
Milibars
AERODROME
PARKING
TAXIWAY
HOLDING POINT
RUNWAY
IN-FLIGHT REPORTS
(*position report)
a) CALL: ATC, Aircraft Registration
b) Message (order):
-Aircraft type
-Registration*
-Destination
-Position and Heading*
-Altitude/Flight Level*
-Altimeter Setting
-Flight Conditions
-ETA/DME to the next point*
-Request
c) READ BACK TO ATC:
-Message data, aircraft req.
TRANSMISSION OF NUMBERS AND TIMES

Case                                Example                Transmitted As
Aircraft Registration          EC-PBO            Echo Charlie Papa Delta Alpha
Altimeter Settings                29.92              Two Niner Niner Two
Flight Level                        FL45               Flight Level Four Five
Heading                             080deg.            Zero Eight Zero
Transponder Code          Squawk 7436       Squawk Seven Four Three Six
Frequencies                        118.6              One One Eight Decimal Six
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