Yes, even before [[BlackDudeDiesFirst the black dude.]]

A two-way radio is put out of commission to allow the plot to proceed.

Back before CellPhonesAreUseless, the device that could really put a crimp in a plot's need to keep the characters isolated and cut off from information was the two-way radio. So in a lot of Twentieth Century media, the radio was put out of commission as quickly as possible. There were three main ways of doing this.

# Vehicle crash. Whenever a plane or boat had to make a forced landing, the radio always, always broke, no matter how gentle the landing seemed otherwise. This was close to TruthInTelevision before the widespread use of transistors and printed circuits; radios used a lot of easily breakable tubes, and wires jarred loose with relatively little provocation.
# Interference. This was usually accomplished with the use of heavy weather conditions, which also helped isolate the characters. Imaginative writers could use interference to give only partial information to the protagonists, which they can then [[PoorCommunicationKills totally misinterpret]].
# Sabotage. This ranges from the subtle (breaking or stealing a single hidden tube) to the blatant (taking an axe to the radio set.) This is usually a big hint to the protagonists that what's going on is no accident or series of coincidences.

Many stories in the appropriate time period will have a radioman [[EveryoneCallsHimBarkeep usually named "Sparks"]] who will be stuck trying to repair the radio or get through the interference for most of the story. His isolation often causes him to score badly on the SortingAlgorithmOfMortality.

Compare CutPhoneLines, which serve a similar narrative purpose, but are ''always'' sabotage. Related to PoorCommunicationKills, because the best way to have a plot get complex for the protagonists is to take out the communication.


[[folder: Comic Book ]]

* An issue of ''{{The Maze Agency}}'' uses the sabotage variant, smashing the radio and then blowing up the boat to strand the characters on an isolated island.


[[folder: Film ]]

* In ''Film/CrimsonTide'', the loss of both the boat's radio and longwave buoy (partway through a transmission) left the crew unsure whether an order to launch nuclear missiles had been countermanded. The tense scenario comes complete with an engineer racing against time to repair the radio.
* Similarly, the failure of a strategic bomber's radio meant that the failsafe in ''Film/FailSafe'' did not, well, fail safe.
** The radio didn't fail, the system did. The bombers could send and receive messages but they were trained not to accept tactical orders once past their Fail Safe point.
* Similar to ''FailSafe'', the bomber's radio is damaged in ''DrStrangelove'', meaning it can't be recalled.
* In ''Film/TheWickerMan'', the natives sabotage the policeman's plane, cutting out his communication with the mainland.
* ''Film/FantasticVoyage'': It's the vital ''laser'' that is sabotaged, and the only source for parts to fix it is the radio.
* When the shark starts its climactic attack in ''Film/{{Jaws}}'' and Chief Brody tries to call for help, Quint destroys the radio - because [[TheOnlyOneAllowedToDefeatYou he has to be the one to kill the shark]].
* Done in ''{{Tremors}} 2''. The creatures destroy the radio accidentally because they associate heat with prey.
* When Jack decides to kill Wendy and Danny in ''Film/TheShining'', one of his first acts is to disable the radio so she cannot call for help.
* Early on in ''Film/TheThing1982'', it's established that the radio's been dead for weeks and Windows hasn't been able to get through. Later Blair uses an axe to make sure that it won't get used again. [[spoiler:Fans still debate whether Blair had been assimilated by that point, and so was actually committing sabotage under the guise of insanity.]]
** [[Film/TheThing2011 In the prequel]] the leader of the expedition orders radio silence so no-one will blab about having found a FlyingSaucer. By the time things start going wrong, the same storm which disrupts Willow's communications is approaching (though sabotage is also a possibility, as the alien has had time to take human form).
* IndianaJones sabotages the zeppelin's radio in ''[[IndianaJonesAndTheLastCrusade The Last Crusade]]'' to prevent it from being ordered back to Germany. The zeppelin turns around anyway when the crew discovers the sabotage.
* ''Film/TheGerman'': Early in the dogfight, a bullet flies through Red Leader's cockpit and takes out the radio.
* In "Fate Is The Hunter" the airplane's radio failed as part of a series of cascading failures that led to its disasterous crash landing. Oddly, the same thing happened on a test flight although they had none of the other problems. They found [[spoiler: that the problems on the first flight had caused the captain's coffee to spill and seep into the electronics. This knocked out the radio and caused a false alarm in a good engine]]


[[folder: Literature ]]

* In ''The Heights of Zervos'' by Colin Forbes, a British saboteur disguised as a Nazi takes advantage of a sniper attack on "his" unit to put a bullet through the radio.
* In the second book in ''Literature/TheMysteriousBenedictSociety'' series, ''The Mysterious Benedict Society and the Perilous Journey'', Reynie Muldoon (the main protagonist) actually pitched the radio out of a train because he mistakenly did not consider the person on the other end to be trustworthy.
* In ''Literature/TheShining'', one of the Overlook's first overt hallucinations is that of Jack's dead (and abusive) father, berating him over the radio that's the only link back to the mainland. It keeps it up until Jack snaps and smashes the radio.
* In ''The Beacon To Elsewhere'' by Creator/JamesHSchmitz, the protagonist has two communicators, and the same incident stops him using either of them. He's in an area where something is interfering with the planet's power grid; the power failure brings down his flying car. One of his communicators also runs off the grid, so it can't be used. The other has its own power source, but gets destroyed in the crash.
* Magic interferes with tech in ''Literature/TheDresdenFiles'', and cell phones (and radios and other relatively fragile/complicated electrical systems) are the first to go, likened to canaries in mines.
* Early on in the Literature/CiaphasCain novel ''Death or Glory'', a PDF squad's voxcaster (read: radio) is ''shot'' during a firefight, leading to a tense moment where Cain thinks his only backup has been wiped out. It turns out that they aren't, and they arrive JustInTime to save him from being cornered.
* The first Literature/NewJediOrder novel, ''Vector Prime'', features a Yuuzhan Vong warrior named Yomin Carr sabotaging a scientific base that happens to be monitoring the eponymous invasion path at the edge of the galaxy. True to the trope, one of Carr's first efforts is to disable the colony's communications gear, forcing their technician to tromp all the way out and repair it -- at which point Carr kills him.


[[folder: Live Action TV ]]

* On ''{{Lost}}'' a large part of the pilot is spent trying to get the plane's radio working so they can call for help. A few months later they find out that [[spoiler: all radio signals from the island are jammed on Ben's orders]]. Anyway the weird nature of the islands makes communication with the outside world very tricky.
* When the castaways are stranded on ''GilligansIsland'' their radio transmitter is broken but they can still receive radio signals including a report of how the search for their boat is called off.
* The ''Series/DoctorWho'' serial "The Power of the Daleks" uses the sabotage version when the Doctor discovers that the communications room of the colony has been destroyed. Though the Daleks may not be responsible, as there's a revolution brewing on the colony.
** In "Terror of the Vervoids", the Doctor himself is seen smashing up the communications room with an axe. [[UnreliableNarrator Maybe.]]
** In "The Horror of Fang Rock", Skinsale sabotages the wireless to thwart Palmerdale's schemes.
** Commander Millington orders all radio receivers destroyed and the phone lines cut in order to isolate the naval base in "The Curse of Fenric".
* In ''{{Space 1999}}'': "Deaths's Other Dominion", BrianBlessed sabotages his own radio so Alpha cannot contact his planet.


[[folder: Video Game ]]

* ''VideoGame/{{Half-Life 2}}'''s extremely finicky video communicators.
** Also, one of the reasons why Gordon has to go from help in the first game is that the resonance cascade took out the phones.
* A mission in ''{{Vietcong}}'' pretty much carries on due to the radio not reaching a VC underground tunnel.
* The light-eating function of the [[EvilWeapon Sealed Weapon]] [[LightIsNotGood Izayoi]] is one means of enacting this trope in the ''VideoGame/BlazBlue'' series, most particularly when Tager and Kokonoe try to keep in touch with each other. Both of them, as of ''Chronophantasma'', have victory quotes which reference this.
--> '''Tager''': Kokonoe! ...No reception.\\
'''Kokonoe''': Tager! Come in, Tager! ...Damn reception...
* ''VideoGame/DeadSpace'': Kendra hangs a lampshade on it while approaching the USG Ishimura in the opening sequence, and it continues to happen to individuals communicating with Isaac throughout the game as needed.
-->'''Kendra Daniels''': ''[[LampshadeHanging Never heard of a total communications blackout on one of these things.]]''


[[folder: Real Life ]]

* An Australian air pioneer crashed in the outback and was unable to signal for help because the plane's transmitter was powered by a dynamo hooked directly to the engine.
* The Mann Gulch fire of 1949 that killed 13 smokejumpers. One of the things that went wrong was that the parachute dropping the team's radio failed to open, smashing the radio. It meant they were out of contact and could not get back-up or call in aid for their wounded members.
* The survivors of [[ that one Andes plane crash]] attempted to get the intact radio of the plane to work in order to radio for help, but the batteries were in the separated tail section a few kilometres away. They got as far as disconnecting the radio from the plane and dragging it across to the tail, but the radio used AC power and the batteries [[AllForNothing produced DC]].
* Because of this trope, many nations have emergency phones along deserted stretches of road in wasteland that allow the stranded traveler to ring for help. The Al-Can highway used to have way stations that radioed ahead when you passed - if you didn't arrive in time, the next way-station would go out and look for you to prove you weren't dead. In Namibia, a procedure some use if lost on the vast, lonely highways of that state is to throw rocks at the telephone lines (which are next to the roads) until you break them, then get picked up by whoever they send along to fix them.
* One of the various things that went wrong with Operation Market Garden in WorldWarII was that the radios broke for the soldiers in Arnhem when they landed. This was particularly important as they were unable to secure the supply drop zones and were unable to inform anyone of this problem.
* One early warning sign of a [[UsefulNotes/NuclearWeapons nuclear attack or nuclear weapon accident]] that involves an airburst would be the loss of all power and electronic circuits due to EMP. It's strongly advised that if all power is lost, and at the same time telephone connections are dead and/or all battery-powered or charged electronic devices malfunction/stop working outright, especially with arcing from lines or outlets or devices, that you take this as a warning of nuclear detonation.
* When a Canadian airliner ran out of fuel over Manitoba and had to glide to a safe landing, one of the systems they lost was the radio. The electronics on board were power by generators run by the engines. No engines, no electricity.