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- Stormtrooper helmets in Star Wars do this, as well as the ship-to-ship communications of X-wings and other Rebel starfighters.
Live Action TV
- Parodied in The Young Ones episode "Cash". The police recruiting sergeant (who bears a strange resemblance to Mussolini) tells Neil the only qualification he needs to join the force is the ability to imitate radio static when using his walkie-talkie.
- Spoofed when The Goodies are launched into space. While communicating with Graham at Mission Control, they keep saying "Beep!" at the end of every transmission.
- Quindar tones are also used in the Blake's 7 episode "Killer". Unfortunately this is a case of Technology Marches On.
- Sheldon in The Big Bang Theory insists on adding this verbally at the end of each sentence during a Skype-type videochat via laptop with Howard while the latter is in space.
- This is part of what makes Counter-Strike predefined radio messages so awesome.
- All Terran units in StarCraft have this in their responses to orders.
- Ditto all units in World in Conflict.
- Most of the dialogue in Call of Duty 4 and later.
- Merc in Mirror's Edge.
- The Replica in F.E.A.R., who all speak over radio wiith electronically filtered voices. Project Origin actually shows why they only speak with filtered voices, as it turns out their "natural" voices sound like harsh, guttural, inhuman growling.
- Friendly NPCs also get this if you're beyond a certain distance from them while they're saying something.
- Most of the dialogue in the Ace Combat games, since it primarily takes place via radio communication between planes.
- All unit responses in Homeworld and its sequel, Homeworld 2.
- The Star Fox series uses this for the same reason as the Ace Combat example above.
- XCOM: Enemy Unknown: In the expansion Enemy Within this is the sound made during the EXALT (a clandestine paramilitary group opposing XCOM) turn in covert operations. It comes in contrast with the other-worldy alien gibberish that plays during 'ALIEN ACTIVITY'.
- In the Lilo & Stitch: The Series episode "Clip", when the duo try to sneak into Mertle's house, Lilo does the radio click thing with Stitch as though they're talking on walkie talkies (they weren't actually using them, just pretending they were).
- In an episode of Bonkers, the titular character refused to stop making this noise, even when he wasn't on the radio.
- In Static Shock Virgil and Richie use walkie-talkies they call shockvoxes constantly, from the moment Richie builds them. In the episode where Virgil's sister, Sharron, suspects he's Static, Richie obviously can't hear that Virgil has left and that Sharron is in the room because he's speaking into the shockvox. Sharron hearing Richie call Virgil Static sets off the rest of the episode.
- Parodied in Sponge Bob Squarepants where SpongeBob and Patrick pretend to be astronauts talking through radio, eventually just start alternating static noise.
- Starship Troopers: Invasion: Every time the Alessia sends an audio message to the troopers, it is preceeded by a digital tone. None of the Troopers' radios do this, nor do any video messages sent by anyone.
- Inverted on general-use FM walkie-talkies (FRS/GMRS, PMR 446, etc), where most of them by default include call tones ("Hey you!") and "roger beeps" (indicating end of transmission), but due to the way the squelch functions on such walkie-talkies work, the user never hears the static unless the walkie-talkie is put in monitor mode.
- Many professional and ham radios have an adjustable squelch control to keep constant static from being annoying. Weak signals may not be able to break through the squelch, so the Lost in Transmission trope can (and often does) occur.