Fabula
Object
Object

Marconiscope

The Marconiscope dominates the lodge’s observatory as a towering brass-and-glass radio telescope nearly ten feet tall. Wires dangle from its receptor cone to jury-rigged vacuum tubes and Bakelite knobs, their chipped enamel exposing raw metal beneath years of rough handling. At its core, a circular metal wheel perforated with evenly spaced holes rotates with a rhythmic whir, casting stroboscopic flashes when activated. The machine’s mechanical whine fills the chamber while heat shimmers at its base, amplifying intercepted Martian signals. Sarah grips the control wheel to intercept Sutekh’s mental control beam, her fingers tense as the device translates invisible energy into visible action.
7 appearances

Purpose

To amplify and translate intercepted Martian signals, enabling the interception or disruption of Sutekh’s mental control beam linking Marcus Scarman to the ancient entity.

Significance

Central to the climactic confrontation in the lodge observatory, the Marconiscope becomes the focal point for the Doctor and Sarah’s desperate attempt to sever Sutekh’s hold over Marcus Scarman. Its operation directly challenges Sutekh’s power, risking catastrophic consequences if misused.

Appearances in the Narrative

When this object appears and how it's used

7 moments
S13E9 · Pyramids of Mars Part 1
Time Lord warns before Sutekh’s unsealing

The Doctor closely examines and experiments with Laurence Scarman’s Marconiscope, a primitive radio telescope designed to receive signals from Mars. After Scarman activates it, causing a violent spark and smoke, the Doctor uses his own portable radio to verify the signal’s authenticity. The device’s unstable diodic component ultimately explodes from overuse, signifying its dangerous and misunderstood nature.

Before: The Marconiscope is carefully adjusted and operational within the lodge’s study, though its precise function remains misunderstood by Scarman.
After: The machine is rendered inoperative after the diode explodes during the Doctor’s examination, its secrets partially revealed but its physical integrity destroyed.
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S13E9 · Pyramids of Mars Part 1
Doctor unmasks himself to Sarah and Laurence

The Marconiscope receives a repeating Martian signal that the Doctor identifies as a coded warning ('Beware Sutekh'). After Scarman simulates its operation with overload, the diode explodes, ending its function while confirming its purpose to the Doctor. The device is used to decode cosmic peril through radio emissions from Mars.

Before: Functioning as a reception device for stellar radio emissions, previously believed to be harmless by Scarman
After: Destroyed by a diode explosion after Scarman’s demonstration overloads it, ceasing its operation
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S13E9 · Pyramids of Mars Part 1
Marconiscope reveals Sutekh's warning

The Doctor focuses intently on the Marconiscope as the central device under investigation, examining its components and activating its controls despite Scarman's warnings about dangerous electrical currents. The machine's catastrophic failure reveals the repeating Martian signal containing Sutekh's name.

Before: Functional scientific instrument carefully maintained by Scarman, though unfamiliar with its extraterrestrial reception capabilities
After: Catastrophically damaged beyond immediate repair, with a large diode exploded and internal components burned out
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S13E9 · Pyramids of Mars Part 1
Doctor confronts Sutekh threat directly

The Marconiscope, Scarman’s primitive radio telescope, receives and amplifies the repeating Martian signal that the Doctor deciphers as a warning about Sutekh. When overloaded, its components—including a large diode—explode, compelling the Doctor to use his portable radio to verify the signal independently.

Before: Partially functioning but unpredictably unstable, recently used to receive unexplained repeating patterns from Mars
After: Destroyed by electrical overload, its function superseded by simpler verification via portable radio
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S13E10 · Pyramids of Mars Part 2
Doctor reveals Sutekh’s diabolical plan

The Doctor and Sarah work quickly over the Marconiscope to stabilize its broken circuits and ready the magneto component, using the device not merely as a telescope but as a weapon against Sutekh’s mental beam controlling Marcus Scarman.

Before: Jury-rigged radio telescope with cracked casing and exposed vacuum tubes, seized by urgency as Sutekh’s control looms.
After: Activated with Sarah’s switch, its magneto disrupting the mental beam while its brass components whine under strain from amplified signals.
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S13E10 · Pyramids of Mars Part 2
Mummies seize Clements outside lodge

The Marconiscope functions as the control device to block the mental beam Sutekh exerts through Marcus Scarman. Sarah manipulates its perforated wheel and Sarah’s magneto component to disrupt the psychic connection. The Doctor identifies its parts, then relies on Sarah to activate the power source while Laurence tries frantically to prevent it.

Before: Functioning but needing repair; brass-and-wood casing bears signs of recent rough handling within the lodge’s study.
After: Activated by Sarah with a decisive throw of the switch, its gears spinning and lights flickering as the mental beam is severed—its controls now glowing with charged energy.
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S13E11 · Pyramids of Mars Part 3
Doctor rebukes Laurence and departs sharply

The Marconiscope serves as both witness and victim to the confrontation. Struck by the first mummy, it emits a cacophonous bang and begins malfunctioning, creating a distraction that momentarily frees Sarah. Though damaged and deranged in its operation, it unintentionally aids the Doctor’s strategic intervention by interrupting the mummy’s assault.

Before: Functional but aging brass-and-glass radio telescope, intercepting Martian signals
After: Severely damaged, its mechanical whine and stroboscopic flashes disrupted by the mummy’s impact
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