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Dimension X | Old Time Radio

Old Time Retro Radio

Dimension X | Old Time Radio brings you visionary science fiction from the golden age of radio, with stories of space travel, alien worlds, futuristic technology, strange experiments, and humanity’s uncertain future. Each episode is an Old Time Retro Radio production, presenting the original broadcast with gently cleaned and mastered audio, a newly produced introduction and closing, and custom episode artwork. Dimension X adapted stories by some of science fiction’s most influential writers, including Ray Bradbury, Isaac Asimov, Robert A. Heinlein, and Kurt Vonnegut, combining imaginative ideas with suspense and classic radio drama. Rediscover classic old time radio science fiction, vintage sci-fi, space adventure, speculative fiction, and futuristic radio drama.










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  • 61 episodes
  • daily
  • Avg 29 min
  • English

Episodes 61

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  • Yesterday · 32 min

    Dimension X - "Requiem" (Old Time Radio, 1951)

    Dimension X presents “Requiem,” episode 49, originally broadcast on September 22, 1951. Adapted by Ernest Kinoy from Robert A. Heinlein’s celebrated short story, the episode aired on NBC. In a future where lunar travel is possible, aging...

    • Transcript
  • Wednesday · 30 min

    Dimension X - "The Lost Race" (Old Time Radio, 1950)

    Dimension X presents “The Lost Race,” episode 7, originally broadcast May 20, 1950. This early live NBC science-fiction drama adapts Murray Leinster’s story, credited on air as “The Lost.” When the space freighter Carilya emerges far from its charted...

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  • Tuesday · 28 min

    Dimension X - "The Outer Limit" (Old Time Radio, 1950)

    Dimension X presents “The Outer Limit,” episode 23, originally broadcast on September 8, 1950. This NBC science-fiction drama is a repeat of the series’ April 8, 1950 premiere production, adapted by Ernest Kinoy from a story by Graham Doar. In the...

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  • Monday · 31 min

    Dimension X - "The Martian Chronicles" (Old Time Radio, 1950)

    Dimension X presents “The Martian Chronicles,” episode 20, originally broadcast August 18, 1950. This NBC science-fiction drama adapts several connected stories from Ray Bradbury’s The Martian Chronicles. Beginning with a Martian household’s...

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  • Saturday · 30 min

    Dimension X - "The Roads Must Roll" (Old Time Radio, 1950)

    Dimension X presents “The Roads Must Roll,” episode 22, originally broadcast on September 1, 1950. Adapted by Ernest Kinoy from Robert A. Heinlein’s 1940 short story, this NBC Radio Network drama features Wendell Holmes and Ralph Bell. In a future...

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  • November 6 · 30 min

    Dimension X - "No Contact" (Old Time Radio, 1950)

    Dimension X presents “No Contact,” episode 27, originally broadcast October 28, 1950. Written by George Lefferts from a Lefferts and Ernest Kinoy storyline, this NBC science-fiction drama stars Luis Van Rooten as Captain Thorson and Donald Buka as...

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  • November 5 · 30 min

    Dimension X - "Knock" (Old Time Radio, 1950)

    Dimension X presents “Knock,” episode 5, originally broadcast May 6, 1950. This NBC sustaining broadcast adapts Fredric Brown’s short story for radio, with Ernest Kinoy credited for the adaptation. Anthropology professor Walter Phelan believes he may...

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  • November 3 · 31 min

    Dimension X - "The Castaways" (Old Time Radio, 1950)

    Dimension X presents “The Castaways,” episode 19, originally broadcast August 11, 1950. This NBC science-fiction drama was written by Ernest Kinoy from an original story by Kinoy and George Lefferts, and stars Santos Ortega as General Frank Gaydosh....

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  • November 2 · 26 min

    Dimension X - "Mars Is Heaven" (Old Time Radio, 1951)

    Dimension X presents “Mars Is Heaven,” episode 33, broadcast January 7, 1951. This NBC science-fiction drama is a rebroadcast of the production first heard on July 7, 1950, adapted by Ernest Kinoy from Ray Bradbury’s short story “Mars Is Heaven!” In...

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  • October 31 · 30 min

    Dimension X - "Embassy" (Old Time Radio, 1950)

    Dimension X presents “Embassy,” episode 9 of the NBC science-fiction anthology, originally broadcast June 3, 1950. Adapted by George Lefferts from Donald A. Wollheim’s 1942 story “The Embassy,” published under the name Martin Pearson, the drama was...

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  • October 30 · 31 min

    Dimension X - "Dr Grimshaw's Sanatorium" (Old Time Radio, 1950)

    Dimension X presents “Dr Grimshaw’s Sanatorium,” episode 25, originally broadcast on September 22, 1950. Adapted by George Lefferts from Fletcher Pratt’s short story, this NBC thriller is directed by Edward King and stars Karl Weber as private...

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  • October 27 · 31 min

    Dimension X - "Shanghied" (Old Time Radio, 1950)

    Dimension X presents “Shanghied,” episode 29, originally broadcast on NBC on November 12, 1950. This original radio drama was written by Ernest Kinoy and directed by Edward King. On the eve of his wedding in Boston, wealthy heir Jeff Coffin awakens...

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  • October 26 · 30 min

    Dimension X - "Report on the Barnhouse Effect" (Old Time Radio, 1950)

    Dimension X presents “Report on the Barnhouse Effect,” episode 3, originally broadcast on NBC on April 22, 1950. This early adaptation of a Kurt Vonnegut Jr. story was adapted for radio by Claris A. Ross and features Santos Ortega and Bob Hastings....

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  • October 24 · 30 min

    Dimension X - "Perigi's Wonderful Dolls" (Old Time Radio, 1950)

    Dimension X presents “Perigi’s Wonderful Dolls,” episode 18, originally broadcast on August 4, 1950. This NBC Radio Network thriller was written by George Lefferts and produced by Van Woodward. In Washington, D.C., a government official’s wife and...

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  • October 23 · 31 min

    Dimension X - "Veldt" (Old Time Radio, 1951)

    Dimension X presents “Veldt,” episode 43, originally broadcast on August 9, 1951. Adapted by Ernest Kinoy from Ray Bradbury’s unsettling short story, this NBC Radio Network drama stars Bill Quinn and Lesley Woods. In a highly automated Happylife...

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  • October 22 · 30 min

    Dimension X - "Dwellers in Silence" (Old Time Radio, 1951)

    Dimension X presents “Dwellers in Silence,” episode 40, originally broadcast on July 19, 1951. Adapted by George Lefferts from a Ray Bradbury story later collected as “The Long Years” in The Martian Chronicles, this NBC production stars Peter Capell...

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  • October 21 · 25 min

    Dimension X - "Nightmare" (Old Time Radio, 1951)

    Dimension X presents “Nightmare,” episode 36, originally broadcast on NBC on June 10, 1951. This tense science-fiction drama stars John Gibson as statistician Samson Gurney. At Long Island’s Brook Meadow atomic-pile project, Gurney finds a troubling...

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  • October 20 · 30 min

    Dimension X - "The Green Hills of Earth" (Old Time Radio, 1950)

    Dimension X presents “The Green Hills of Earth,” episode 32, originally broadcast December 24, 1950. Adapted by Ernest Kinoy from Robert A. Heinlein’s short story, this NBC drama features Ken Williams as Rhysling, with songs performed by Tom Glazer....

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  • October 19 · 23 min

    Dimension X - "First Contact" (Old Time Radio, 1951)

    Dimension X presents “First Contact,” episode 47, originally broadcast on NBC on September 8, 1951. Adapted for radio by Howard Rodman from Murray Leinster’s celebrated short story, the production features Bill Quinn, Bob Hastings, and Cameron...

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Showing 1–20 of 61 episodes