Page 1 of 23
ATSEP BASIC EXAM | {LATEST 2026/ 2027
UPDATE} COMPLETE ACTUAL AND AUTHENTIC
EXAM | BRAND NEW!
What type of surveillance is regarded Non-cooperative,
independent surveillance? - ✔✔✔ Correct Answer > PSR radar
What function of an electromagnetic wave is described in hertz? -
✔✔✔ Correct Answer > Frequency
How is the relationship between wavelength and frequency? -
✔✔✔ Correct Answer > The lower the frequency, the longer the
wavelength
What is the method to change properties like amplitude or
frequency of a periodic wave to convey a message to it called? -
✔✔✔ Correct Answer > Modulation
What is meant by refraction of a radio wave? - ✔✔✔ Correct Answer >
The change in direction of propagation of a wave due to change in
its transmission medium
,Page 2 of 23
What is meant by a duplex communication system? - ✔✔✔ Correct
Answer > Telecommunication between two stations can take place
in both directions simultaneously
What aeronautical service is used between 118 - 137 MHz? - ✔✔✔
Correct Answer > Voice communication on the VHF band
What is the purpose of the PTT button on a radio? - ✔✔✔ Correct
Answer > To activate the radio transmitter
What is SELCAL? - ✔✔✔ Correct Answer > A selective calling system
that allows a ground radio operator to alert an aircrew that the
operator wishes to communicate with that aircraft.
What communication system allows a controller and an aircraft
to communicate via data link text messages - ✔✔✔ Correct Answer >
CPDLC
What is the functionality of the radio receiver? - ✔✔✔ Correct Answer >
Amplify and demodulate the signal to make it audible and pass it
to the loudspeakers
, Page 3 of 23
Which connections are normally used for ground-ground
communication between ATS units? - ✔✔✔ Correct Answer > Telephone
or intercom connections
What is the message handling system used to exchange for
instance flight plans and MET messages between ATS units
called? - ✔✔✔ Correct Answer > AFTN
What is an example of the aeronautical fixed telecommunication
service? - ✔✔✔ Correct Answer > AMHS
What is the functionality called that enables the VCS to select the
receiver with best reception? - ✔✔✔ Correct Answer > BSS
What is the storage requirements for recordings of voice
communication? - ✔✔✔ Correct Answer > 30 days
What technique is used to share several transmissions on the
same transmission path? - ✔✔✔ Correct Answer > Multiplexing
What is meant by circuit switching? - ✔✔✔ Correct Answer > A method
that establishes a dedicated communication channel through the
network before the nodes may communicate
ATSEP BASIC EXAM | {LATEST 2026/ 2027
UPDATE} COMPLETE ACTUAL AND AUTHENTIC
EXAM | BRAND NEW!
What type of surveillance is regarded Non-cooperative,
independent surveillance? - ✔✔✔ Correct Answer > PSR radar
What function of an electromagnetic wave is described in hertz? -
✔✔✔ Correct Answer > Frequency
How is the relationship between wavelength and frequency? -
✔✔✔ Correct Answer > The lower the frequency, the longer the
wavelength
What is the method to change properties like amplitude or
frequency of a periodic wave to convey a message to it called? -
✔✔✔ Correct Answer > Modulation
What is meant by refraction of a radio wave? - ✔✔✔ Correct Answer >
The change in direction of propagation of a wave due to change in
its transmission medium
,Page 2 of 23
What is meant by a duplex communication system? - ✔✔✔ Correct
Answer > Telecommunication between two stations can take place
in both directions simultaneously
What aeronautical service is used between 118 - 137 MHz? - ✔✔✔
Correct Answer > Voice communication on the VHF band
What is the purpose of the PTT button on a radio? - ✔✔✔ Correct
Answer > To activate the radio transmitter
What is SELCAL? - ✔✔✔ Correct Answer > A selective calling system
that allows a ground radio operator to alert an aircrew that the
operator wishes to communicate with that aircraft.
What communication system allows a controller and an aircraft
to communicate via data link text messages - ✔✔✔ Correct Answer >
CPDLC
What is the functionality of the radio receiver? - ✔✔✔ Correct Answer >
Amplify and demodulate the signal to make it audible and pass it
to the loudspeakers
, Page 3 of 23
Which connections are normally used for ground-ground
communication between ATS units? - ✔✔✔ Correct Answer > Telephone
or intercom connections
What is the message handling system used to exchange for
instance flight plans and MET messages between ATS units
called? - ✔✔✔ Correct Answer > AFTN
What is an example of the aeronautical fixed telecommunication
service? - ✔✔✔ Correct Answer > AMHS
What is the functionality called that enables the VCS to select the
receiver with best reception? - ✔✔✔ Correct Answer > BSS
What is the storage requirements for recordings of voice
communication? - ✔✔✔ Correct Answer > 30 days
What technique is used to share several transmissions on the
same transmission path? - ✔✔✔ Correct Answer > Multiplexing
What is meant by circuit switching? - ✔✔✔ Correct Answer > A method
that establishes a dedicated communication channel through the
network before the nodes may communicate
