
Satellite Radios
Icom’s SATELLITE PTT (Push-To-Talk) is a two-way radio system using the Iridium® satellite network. This network allows you to use the IC-SAT100/M in remote, isolated areas without mobile phones or landline network infrastructure or if terrestrial network infrastructure is rendered unusable by human or natural disasters.
Read the Icom America Iridium Push-To-Talk (PTT) Terms & Conditions document
Benefits
- Reliable satellite communications
- Worldwide coverage
- Flat monthly fee with unlimited talk-time
- Simple operation with a press of a PTT
- Distance is no longer an obstacle
- Multiple talkgroup sizes support an unlimited number of
subscribers - Seamless communication with real-time low-latency
communication - Minimal infrastructure upgrades

IC-SAT100
Sturdy, waterproof, global communication handheld
radio with vibration alerts.
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IC-SAT100M
World’s first dedicated satellite mobile radio. Reach anyone by installing in buildings or vehicles.
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Real-Time Low-Latency Communication

Using 66 Low Earth Orbit (LEO) Iridium® satellites, the IC-SAT100 provides low-latency communication, and broader, more reliable network coverage, compared to Geosynchronous Equatorial Orbit (GEO) satellites.
Low Earth Orbit Satellites
Icom’s PTT Satellite radios operate on Iridium’s Low Earth Orbit Satellites (LEO). LEO provides low latency communication, broader and more reliable network coverage compared to Geosynchronous Equatorial Orbit Satellites (GEO), which need more variables to operate. GEO satellites are affected by the weather such as rain, clouds and snow. They also do not cover both North and South Poles.
LEO Benefits:
Lower latency compared to GEO
Stronger signals compared to GEO
Portable antenna
No need to face south
Characteristics of Iridium LEO Satellites
- 66 LEO (Low Earth Orbit) satellites circulating the earth at 780 km of altitude
- Each fast moving (27000 km/h) satellites completes an orbit around the Earth every 100 minutes; accessible from a radio approx. for 10 minutes and then the next satellite takes over
- Line-of-sight to the satellite may be blocked by structure or terrain and the link lost
- Since it is moving fast, connection will be re-established typically less than a minute.
One-to-Many Communications

Unlike satellite phones, IC-SAT100 users can immediately start talking to all the radios in the same talkgroup, with just a push of the transmit (PTT) button.
Iridium Network
Icom’s satellite radios are backed by Iridium’s network. These satellites are ready to provide a global communication solution.
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