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Humboldt Site Communication Hub

Sector: Military • Location: Republic, Michigan, United States

Source: 98.7 The Grand

Project
Completed

The Humboldt Site, located in Michigan's Upper Peninsula, was a US Navy facility capable of communicating with submarines around the world using extremely low frequency (ELF) signals. It featured a 28-mile long antenna and was decommissioned in 2004.

Status
Closed
Sector
Military
Location
Republic, Michigan, United States of America
Updated
22 Jul 2026
Source
98.7 The Grand

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Project Information

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The project “Humboldt Site Communication Hub” is an infrastructure initiative in the Military sector, located in Republic, Michigan, United States. Taiyo aggregates data on it from 98.7 The Grand.

Participants

Not available for this record.

Status

Original status

Completed

Taiyo status

Closed

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

The Humboldt Site, located in Michigan's Upper Peninsula, was a US Navy facility capable of communicating with submarines around the world using extremely low frequency (ELF) signals. It featured a 28-mile long antenna and was decommissioned in 2004.

Original sector

Military

Location

Country

United States of America (USA)

State

Michigan

City

Republic

Source

Source

98.7 The Grand

URL

More Details

Record type

Project

Article published date

2025-03-30

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