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KSFO (560 AM): History, Works, Measurement & Companies

KSFO (560 AM), known as KZAC from 2025 to 2026, was a commercial radio station in San Francisco, California, United States. The station operated from 1925 until 2025, and its license was surrendered by its final owner, Cumulus Media, and cancelled by the Federal Communications Commission (FCC) in August 2026. Its transmitter facility was located near the…

Language: English [EN]
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KSFO (560 AM) topic overview

The analysis highlights History, Works, Measurement and Companies as prominent areas in the source structure around KSFO (560 AM).

Related topics
221
Source areas
3
Connected nodes
224
Extracted relationships
29
Related term clusters
54
Bridge connections
224

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

History · 184 topics
Overview · 36 topics
Works cited · 1 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Owner
Cumulus Media · (Radio License Holdings LLC)
Broadcast area
San Francisco Bay Area
Call sign meaning
San Francisco (also the ICAO airport code for San Francisco International Airport)
Class
B
Facility ID
34472
First air date
August 1, 1925 (1925-08-01)

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Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

History

Works cited

For the semantics nerds

You can skip this section if you’re here for content ideas and keyword inspiration.

Advanced semantic analysis

How KSFO (560 AM) connects Entity context

The extracted context around KSFO (560 AM) shows recurring relationship patterns in the source. For example, KSFO (560 AM) → 1070 kHz (1927–1928), 1250 kHz (1925–1926), 1280 kHz (1928), 1390 kHz (1925), 550 kHz (1928–1929), 990 kHz (1926–1927) Another extracted example is KSFO (560 AM) → KNBR, KNBR-FM, KSAN, KSFO, KTCT. Use these groups to spot repeated connection types before inspecting the individual relationships.

KSFO (560 AM)

Top relations

Former frequencies · 6
KSFO (560 AM) → 1070 kHz (1927–1928), 1250 kHz (1925–1926), 1280 kHz (1928), 1390 kHz (1925), 550 kHz (1928–1929), 990 kHz (1926–1927)
Sister stations · 5
KSFO (560 AM) → KNBR, KNBR-FM, KSAN, KSFO, KTCT
Former call signs · 3
KSFO (560 AM) → KSFO (1935–2025), KTAB (1925–1935), KZAC (2025–2026)
Owner · 2
KSFO (560 AM) → (Radio License Holdings LLC), Cumulus Media
Public license information · 2
KSFO (560 AM) → LMS, Public file
Broadcast area · 1
KSFO (560 AM) → San Francisco Bay Area
Call sign meaning · 1
KSFO (560 AM) → San Francisco (also the ICAO airport code for San Francisco International Airport)
Class · 1
KSFO (560 AM) → B
Facility ID · 1
KSFO (560 AM) → 34472
First air date · 1
KSFO (560 AM) → August 1, 1925 (1925-08-01)

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

ksfo station broadcasting radio san francisco talk stations kgo ktab show began oakland moved format cumulus programming became broadcast music

KSFO (560 AM) relationships Subject–Predicate–Object triples

TTTA extracted 29 structured relationships around KSFO (560 AM). Examples in this analysis include KSFO (560 AM) → Broadcast area → San Francisco Bay Area and KSFO (560 AM) → Call sign meaning → San Francisco (also the ICAO airport code for San Francisco International Airport). The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
KSFO (560 AM)Broadcast areaSan Francisco Bay Area1.00infobox
KSFO (560 AM)Call sign meaningSan Francisco (also the ICAO airport code for San Francisco International Airport)1.00infobox
KSFO (560 AM)ClassB1.00infobox
KSFO (560 AM)Facility ID344721.00infobox
KSFO (560 AM)First air dateAugust 1, 1925 (1925-08-01)1.00infobox
KSFO (560 AM)Former call signsKTAB (1925–1935)1.00infobox
KSFO (560 AM)Former call signsKSFO (1935–2025)1.00infobox
KSFO (560 AM)Former call signsKZAC (2025–2026)1.00infobox
KSFO (560 AM)Former frequencies1390 kHz (1925)1.00infobox
KSFO (560 AM)Former frequencies1250 kHz (1925–1926)1.00infobox
KSFO (560 AM)Former frequencies990 kHz (1926–1927)1.00infobox
KSFO (560 AM)Former frequencies1070 kHz (1927–1928)1.00infobox
KSFO (560 AM)Former frequencies1280 kHz (1928)1.00infobox
KSFO (560 AM)Former frequencies550 kHz (1928–1929)1.00infobox
KSFO (560 AM)Frequency560 kHz1.00infobox
KSFO (560 AM)Last air dateMarch 3, 2025 (2025-03-03)1.00infobox
KSFO (560 AM)Licensing authorityFCC1.00infobox
KSFO (560 AM)OwnerCumulus Media1.00infobox
KSFO (560 AM)Owner(Radio License Holdings LLC)1.00infobox
KSFO (560 AM)Power5,000 watts1.00infobox
KSFO (560 AM)Public license informationPublic file1.00infobox
KSFO (560 AM)Public license informationLMS1.00infobox
KSFO (560 AM)Sister stationsKNBR1.00infobox
KSFO (560 AM)Sister stationsKNBR-FM1.00infobox
KSFO (560 AM)Sister stationsKSAN1.00infobox
KSFO (560 AM)Sister stationsKSFO1.00infobox
KSFO (560 AM)Sister stationsKTCT1.00infobox

Related concept clusters Related term clusters

The concept neighborhoods around KSFO (560 AM) bring nearby vocabulary together. In this analysis, examples include Radio, San and Station. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • KSFO (560 AM)
    • Radio
    • San
    • Station
    • Broadcasting
    • Show
    • Francisco
    • Began
    • Talk
    • Kgo
    • Stations
    • January
    • New
  • ksfo (560 am)
    • Radio
    • San
    • Station
    • Broadcasting
    • Show
    • Francisco
    • Began
    • Talk
    • Kgo
    • Stations
    • January
    • New
  • san francisco, california
    • San
    • Radio
    • Oakland
    • Also
    • Broadcast
    • Golden
    • Ksfo
    • California
    • Francisco
    • Kzac
    • Stations
    • Former
  • cumulus media
    • Fcc
    • Kgo
    • Programming
    • Savage
    • Also
    • Format
    • Broadcast
    • Talk
    • Radio
    • Show
    • Stations
    • Francisco
  • cbs radio network
    • Station
    • San
    • Kgo
    • Savage
    • Stations
    • Talk
    • Show
    • Khz
    • Former
    • Music
    • Broadcast
    • Programming
  • king broadcasting company
    • Golden
    • Stations
    • Station
    • International
    • Company
    • Ksfo
    • Fcc
    • Also
    • Kya-fm
    • Ktab
    • Khz
    • March
  • sports talk
    • Sports
    • Talk
    • Savage
    • Format
    • Radio
    • Show
    • Ksfo
    • New
    • Programming
    • Kgo
    • Began
    • Station
  • talk
    • Sports
    • Savage
    • Format
    • Radio
    • Show
    • Ksfo
    • New
    • Programming
    • Kgo
    • Began
    • Station
    • Kya-fm

Connections between topic areas Semantic bridges

For KSFO (560 AM), one of the stronger structural bridges in this analysis connects KSFO (560 AM) with History. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
KSFO (560 AM) — History · splits 40 ⟂ 185
KSFO (560 AM) — Overview · splits 188 ⟂ 37

Map overview Semantic statistics

KSFO (560 AM)

Nodes225
Edges224
Triples29
Avg. degree1.99
Density0.008889
Components1

Source & methodology

TTTA analyzes the structure around KSFO (560 AM) to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Works, Measurement & Companies, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — KSFO (560 AM) · EN edition · Analysis: TopicsToTalkAbout

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