That annoyed BEEP BEEP from NEXTEL phones in the 90s (sound in comments) : r/nostalgia
Walkie Talkies for Kid, 2 Way Radio, 3 KM Long Range Toy for Boy Girl 3-15 Years Old-2 Pack - Walmart.com
nextel chirp sound effect|TikTok Search
Nextel i300 AT&T | Anker Wireless
It's no accident that Apple chose a yellow icon for its walkie-talkie feature. I dug out my old (2002ish) Nextel with PTT (push to talk). It was all the rage back then... :
Can an old flip phone be turned into a walkie talkie? How would you do it? - Quora