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Amateur Radio Satellites: A Comprehensive Guide

Pilot Oswald operates SAREX equipment on Discovery's forward flight deck during STS-56 mission.
Image: NASA/JSC
Quick answer · as of 12 Oct 2026

Amateur radio satellites enable global communication for enthusiasts. Learn how they work, their benefits, and how to track them.

Key figures · as of 12 Oct 2026 · Orbital Radar tracking data
Active satellites15,787
Starlink active10,063
Catalogued objects31,507
Active close approaches20
People in space10

Amateur radio satellites, also known as 'ham satellites', are artificial satellites used by amateur radio operators for non-commercial communication. These satellites facilitate long-distance communication by relaying signals between ground stations. As of 2026, there are numerous active amateur satellites in orbit, contributing to the total of 15,787 active satellites tracked by Orbital Radar.

How Do Amateur Radio Satellites Work?

Amateur radio satellites operate by receiving signals from a ground-based transmitter, amplifying them, and retransmitting them back to Earth. This process allows operators to communicate over vast distances, bypassing the Earth's curvature. These satellites often use low Earth orbit (LEO), with altitudes typically between 500 to 1,500 kilometres, enabling frequent passes over ground stations.

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Why Are Amateur Radio Satellites Important?

Space shuttle Atlantis on launch pad at Kennedy Space Center under clear blue sky.
KSC-02pd1491 · Image: NASA/KSC

Amateur radio satellites play a crucial role in emergency communications, scientific research, and education. They provide a reliable communication channel when terrestrial networks fail, such as during natural disasters. Additionally, they offer a platform for scientific experiments and educational projects, promoting interest in STEM fields.

Tracking Amateur Radio Satellites

Space shuttle Endeavour being transported to Vehicle Assembly Building at Kennedy Space Center.
KSC-04pd-2575 · Image: NASA/KSC

Tracking amateur radio satellites is essential for effective communication. Enthusiasts can use tools like the Orbital Radar pass predictor to determine when a satellite will be visible from their location. This involves calculating the satellite's orbit and predicting its path across the sky.

Amateur Radio Satellites vs. Commercial Satellites

Satellite image of a compact typhoon swirling in the western Pacific Ocean.
"Midget typhoon" in the western Pacific Ocean · Image: NASA/GSFC

Unlike commercial satellites, which are often large and expensive, amateur radio satellites are typically small and cost-effective. They are often built by amateur groups or educational institutions, focusing on non-commercial purposes. While commercial satellites prioritize high-capacity data transmission, amateur satellites focus on facilitating communication for hobbyists and educational purposes.

Key Takeaways

Amateur radio satellites are vital for global communication among enthusiasts, providing a platform for education and emergency communication. They operate in low Earth orbit, allowing frequent passes over ground stations. Tracking these satellites is crucial for effective use, with tools like the Orbital Radar pass predictor being invaluable resources.

Frequently Asked Questions

How can I communicate via amateur radio satellites?
To communicate via amateur radio satellites, you need a compatible transceiver and an antenna capable of tracking the satellite's path. Use tools like the Orbital Radar pass predictor to determine when satellites are overhead.
What frequencies do amateur radio satellites use?
Amateur radio satellites typically operate on VHF (Very High Frequency) and UHF (Ultra High Frequency) bands. Specific frequencies vary by satellite, so operators should consult the satellite's technical documentation.
Are there any regulations for using amateur radio satellites?
Yes, operators must adhere to international regulations set by the International Telecommunication Union (ITU) and obtain the necessary licences from their national telecommunications authority.
Can amateur radio satellites be used for emergency communication?
Yes, amateur radio satellites are often used for emergency communication, providing a reliable channel when terrestrial networks are unavailable. They are particularly useful in remote or disaster-stricken areas.
How many amateur radio satellites are currently in orbit?
As of 2026, there are numerous amateur radio satellites in orbit, contributing to the total of 15,787 active satellites tracked by Orbital Radar.
📎 Cite this article · data available
APA
Orbital Radar Newsroom. (2026). Amateur Radio Satellites: A Comprehensive Guide. Orbital Radar. https://orbitalradar.com/blog/amateur-radio-satellites-explainer
MLA
"Amateur Radio Satellites: A Comprehensive Guide." Orbital Radar, 12 October 2026, https://orbitalradar.com/blog/amateur-radio-satellites-explainer.
BibTeX
@misc{orbitalradar_amateur_radio_satellites_explainer, title = {Amateur Radio Satellites: A Comprehensive Guide}, author = {{Orbital Radar}}, year = {2026}, howpublished = {\url{https://orbitalradar.com/blog/amateur-radio-satellites-explainer}} }
The live figures in this article are available as machine-readable data: download JSON (CC BY 4.0, attribute “Orbital Radar” with a link).
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