How can air traffic controllers do a SELCAL check with an aircraft? Do they need to press a big button, or just click somewhere on their computer? - Quora
![File:US Navy 040408-N-8921O-020 Lt. William Eastman, of Baltimore, Md., performs a pre-flight radio check with Aviation Electronic Technician 3rd Class Ryder Buttrey, of San Diego, Calif (background).jpg - Wikimedia Commons File:US Navy 040408-N-8921O-020 Lt. William Eastman, of Baltimore, Md., performs a pre-flight radio check with Aviation Electronic Technician 3rd Class Ryder Buttrey, of San Diego, Calif (background).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/US_Navy_040408-N-8921O-020_Lt._William_Eastman%2C_of_Baltimore%2C_Md.%2C_performs_a_pre-flight_radio_check_with_Aviation_Electronic_Technician_3rd_Class_Ryder_Buttrey%2C_of_San_Diego%2C_Calif_%28background%29.jpg/1280px-thumbnail.jpg)
File:US Navy 040408-N-8921O-020 Lt. William Eastman, of Baltimore, Md., performs a pre-flight radio check with Aviation Electronic Technician 3rd Class Ryder Buttrey, of San Diego, Calif (background).jpg - Wikimedia Commons
![PRE FLIGHT CHECK OR RADIO CHECK OR COCKPIT CHECK PREFLIGHT RADIO CHECK IS DONE ON GROUND BEFORE STARTING THE ENGINES. CALLSIGN IS PLACE NAME AND GROUND. - ppt download PRE FLIGHT CHECK OR RADIO CHECK OR COCKPIT CHECK PREFLIGHT RADIO CHECK IS DONE ON GROUND BEFORE STARTING THE ENGINES. CALLSIGN IS PLACE NAME AND GROUND. - ppt download](https://images.slideplayer.com/34/10188598/slides/slide_2.jpg)
PRE FLIGHT CHECK OR RADIO CHECK OR COCKPIT CHECK PREFLIGHT RADIO CHECK IS DONE ON GROUND BEFORE STARTING THE ENGINES. CALLSIGN IS PLACE NAME AND GROUND. - ppt download
![Spc. James Gullett, a Soldier assigned to the 603rd Aviation Support Battalion, 3rd Combat Aviation Brigade, 3rd Infantry Division, conducts a radio check as his team conducts downed aircraft recovery training at Spc. James Gullett, a Soldier assigned to the 603rd Aviation Support Battalion, 3rd Combat Aviation Brigade, 3rd Infantry Division, conducts a radio check as his team conducts downed aircraft recovery training at](https://l450v.alamy.com/450v/2gk7g78/spc-james-gullett-a-soldier-assigned-to-the-603rd-aviation-support-battalion-3rd-combat-aviation-brigade-3rd-infantry-division-conducts-a-radio-check-as-his-team-conducts-downed-aircraft-recovery-training-at-fort-stewart-georgia-august-25-downed-aircraft-recovery-team-training-allows-soldiers-to-maintain-their-tactical-job-proficiency-as-well-as-maintain-unit-readiness-2gk7g78.jpg)
Spc. James Gullett, a Soldier assigned to the 603rd Aviation Support Battalion, 3rd Combat Aviation Brigade, 3rd Infantry Division, conducts a radio check as his team conducts downed aircraft recovery training at
![Aviation Radio Communications Made Easy: VFR Edition: Talk Like a Pro with Templates That Function as a Script for Your VFR Flights: Ward Jr., Hugh C.: 9781560275848: Books Aviation Radio Communications Made Easy: VFR Edition: Talk Like a Pro with Templates That Function as a Script for Your VFR Flights: Ward Jr., Hugh C.: 9781560275848: Books](https://images-na.ssl-images-amazon.com/images/I/81m5Fe7faSL.jpg)