My friend and I would roam for miles. My mother had a large bell that could be heard for great distances.
My friend’s mother had Jack. When she wanted him to come home, she would let jack lose. When Jack showed up it was time to head home. Jack was a black and white border collie
LOL, my son and his friends would roam all over the woods all day. My voice is soft and does not carry, however, he always had his dog with him. The dog could hear me whistle and would head the kids home.