"A loudspeaker system (the ramkol) played bugle calls for every part of the day, from wake-up to taps, followed by Hebrew messages always beginning with a loud 'hakshivu, hakshivu!'" (source)

"Campers wake up to gentle ramkol announcements and get ready for Tfilah." (source)

"There was a buildup throughout the nine days leading up to the moment to set the tone. No music on the ram kol. Monotone announcements." (source)

"We also have installed a modern “ram call” loudspeaker and alert system which will both provide greater communications and emergency preparedness when needed as well as programmatic opportunities every day." (source)