Radio Broadcasting

Mass distribution of audio content via radio waves to a wide audience.

Core metadata

ID: radio_broadcasting
Era: Modern
First known date: 1920 (exact)
Region: Pittsburgh, Pennsylvania, United States
Review status: source_checked
Maturity: N/A

Prerequisites

Dependents

Mass Media (mass_media)

Fields

None.

Node sources

KDKA begins to broadcast (PBS / WGBH American Experience, 2026, review) • Supports: node
Locator: PBS states that KDKA made the first commercial broadcast on November 2, 1920, carrying Harding-Cox election returns.

Prerequisite edge evidence

Edge/source evidence summary:

Prerequisite edges: 4
Average edge confidence: 68%
Prerequisite sources: 3
expert_inference: 4

Prerequisite	Type	Confidence	Evidence level	Note	Sources
Radio (radio)	enabling	68%	expert_inference	Radio provides a capability that enables this technology without being the only possible path.	Radio (Encyclopaedia Britannica, 2026, textbook) • Supports: edge
Mass Production (mass_production)	enabling	68%	expert_inference	Mass Production provides a capability that enables this technology without being the only possible path.	Mass production (Encyclopaedia Britannica, 2026, textbook) • Supports: edge
Electronics (electronics)	enabling	68%	expert_inference	Electronics provides a capability that enables this technology without being the only possible path.	Diode (IEEE History Center, 2026, museum) • Supports: edge
Phonograph (phonograph)	enabling	68%	expert_inference	Phonograph provides a capability that enables this technology without being the only possible path.	No sources recorded.

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