Radio lab
Hear the call. Commit to the meaning.
Tune the three airport channels Part 107 students confuse most, read them against a sectional-style data block, then prove you can extract the runway, weather, and surface detail in a scored radio check.
Airport radio simulator
Tune the channel. Decode the call.
Frequency
122.80
Common Traffic Advisory Frequency
0:00 / 0:00
Audio file is still being generated or did not load. The transcript remains available.
Current channel
CTAF runway monitor
The self-announce traffic frequency at many non-towered airports. Pilots say where they are, what runway they are using, and what they are about to do.
Airport data block
Cedar Lake Muni
Sample sectional-style label, not for navigation.
Self-announce traffic near the runway and pattern.
Automated weather: wind, visibility, ceiling, altimeter.
Airport advisory, ramp, fuel, and local services.
Now tuned: CTAF 122.80. On the exam, read the airport label first, then decide whether that frequency is traffic, weather, or advisory/service information.
What it is
CTAF is not a clearance channel. It is a shared situational-awareness frequency where traffic calls stack up quickly around the runway and traffic pattern.
Pilot takeaway
For a remote pilot, the value is listening for runway direction, pattern legs, and traffic density before working near an airport environment.
Exam signal
If the chart gives a CTAF, expect questions about runway use, traffic-pattern position, non-towered operations, or what a pilot is announcing.
Listen for
- Airport name repeated at the beginning and end
- Runway numbers such as runway one eight
- Pattern legs: downwind, base, final, departing
- No controller issuing a takeoff or landing clearance
Transmission log
Read the raw call first. Open the plain-English decode only after you have formed your own traffic picture.
Cedar Lake traffic, Skyhawk four five alpha, ten miles west, inbound for landing runway one eight, Cedar Lake.
Reveal plain-English decode
A small airplane is west of the airport and coming in to land southbound on runway 18.
Cedar Lake traffic, Warrior two charlie, entering left downwind runway one eight, Cedar Lake.
Reveal plain-English decode
The aircraft is in the traffic pattern and will turn base, then final for runway 18.
Cedar Lake traffic, Skyhawk four five alpha, entering the forty-five for left downwind runway one eight, Cedar Lake.
Reveal plain-English decode
Another aircraft is joining the same runway pattern. More runway-area traffic is building.
Cedar Lake traffic, Cherokee seven six papa, departing runway one eight, remaining in the pattern, Cedar Lake.
Reveal plain-English decode
A departing aircraft will climb out and stay near the airport for another circuit.
Cedar Lake traffic, Warrior two charlie, turning final runway one eight, full stop, Cedar Lake.
Reveal plain-English decode
An aircraft is lined up with runway 18 and landing now. Stay well clear of the approach path.
Active recall · 6 scored calls
Radio check
Use the airport label, read the transmission, and commit before the decode appears. Your place and score stay on this device.
Session score
0/0 correct
Call 1 of 6 · Identify the service
What kind of radio exchange is this?
“Cedar Lake traffic, Warrior two charlie, entering left downwind runway one eight, Cedar Lake.”
CTAF
Runway and traffic-pattern awareness at many non-towered airports. The exam loves runway numbers, final, base, downwind, and who has not received a clearance.
Weather
ATIS, AWOS, and ASOS broadcasts are weather sources. Pull out wind, visibility, ceiling, altimeter, and runway in use.
UNICOM
Airport advisory plus local services: fuel, ramp, hangars, ground movement, and sometimes the same frequency used as CTAF.
Question preview
Radio comprehension, not radio trivia.
Airport radio questions become manageable when you identify the source first, then extract one operational fact. These examples show the reasoning used in the scored simulator above.
Example 01 · Identify the service
What kind of radio exchange is this?
“Cedar Lake traffic, Warrior two charlie, entering left downwind runway one eight, Cedar Lake.”
- A. A CTAF self-announcement
- B. An automated weather observation
- C. A tower-issued landing clearance
Show answer and explanation
A CTAF self-announcement. The pilot names the airport, position, and runway, then repeats the airport name. No controller responds or issues a clearance. That is self-announce traffic awareness on CTAF.
Example 02 · Read the airport label
Which frequency provides the automated weather at Cedar Lake Muni?
- A. 122.80
- B. 119.925
- C. 122.95
Show answer and explanation
119.925. The airport label pairs AWOS-3 with 119.925. CTAF 122.80 is the traffic frequency in this example, while 122.95 is the separate UNICOM service frequency used in the simulator.
Example 03 · Identify the service
Who most likely gave this response?
“Wind one eight zero at eight, runway one eight in use, no reported traffic, fuel available south ramp.”
- A. A UNICOM advisory station
- B. An air traffic control tower
- C. An AWOS sensor broadcast
Show answer and explanation
A UNICOM advisory station. The mix of wind, recommended runway, reported traffic, and fuel location is the signature of a UNICOM airport advisory. It is useful information, but it is not an ATC clearance.
Part 107 boundary
Treat this as radio comprehension, not permission.
A frequency printed on a sectional chart is not authorization to fly in controlled airspace, and it is not an invitation for a remote pilot to transmit. For most drone pilots, the practical skill is monitoring and understanding what manned aircraft, weather systems, or airport advisory stations are saying.
The exam angle is narrower: know which source gives traffic information, which source gives weather, and which source may cover airport advisory and local services. Then connect the words you hear to runway direction, traffic pattern position, weather minimums, and airport surface activity.
Demo channels included
- 122.80CTAF runway monitorCommon Traffic Advisory Frequency
- 119.925Weather broadcastATIS / AWOS / ASOS style
- 122.95UNICOM mixed servicesAdvisory, ramp, fuel, local services
Official references
Definitions and operating context are checked against the current FAA Aeronautical Information Manual and the FAA guidance for non-towered airport operations.