QO-100 Geostationary Satellite for Amateur Radio

Find essential information and resources for operating with the Qatar-OSCAR 100 geostationary satellite, including equipment builds and operating guidelines.

Austin
Reviewed by • Digital Modes & Software Editor March 2026

QO-100, also known as Es'hail-2, is the first geostationary amateur radio satellite, providing continuous coverage over a vast area from Brazil to Thailand. This satellite carries both narrowband and wideband transponders, allowing hams to make QSOs on microwave bands without the typical Doppler shift challenges of low-earth orbit satellites. Operators use QO-100 for voice, digital modes like FT8, and even amateur television, connecting stations across continents with relatively modest equipment.

Many hams interested in QO-100 satellite operation look for resources on building equipment, often adapting standard satellite LNBs and dish antennas. There are also detailed articles and presentations, such as those from AMSAT-DL, explaining how to set up a station for receiving and transmitting. Operators can find band plans and operating guidelines to ensure proper use of the transponders, and even listen to live activity via a WebSDR hosted at Goonhilly Earth Station.

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