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Iridium Push-to-Talk Systems
Coordinate teams, vehicles and control rooms beyond the reach of cellular and traditional radio networks with Iridium satellite Push-to-Talk.
Instant Group Communication. Anywhere on Earth.
Iridium Push-to-Talk systems provide instant, secure group communications for teams operating beyond the reach of cellular and traditional radio networks. Using the global Iridium satellite network, satellite PTT radios connect handheld users, vehicles and control rooms across remote locations worldwide, making them ideal for emergency response, maritime, utilities, security, construction and field operations.
Global Group Voice
Communicate across regions, borders and oceans.
Rapid Deployment
Create a communications network without towers or repeaters.
Secure Comms
AES-256 encrypted group conversations.
Configurable Talkgroups
Organise devices by team, role, location or operation.
Radio Integration
Extend existing terrestrial radio networks over satellite.
Rugged Equipment
Purpose-designed for demanding field environments
Choose Your Push-to-Talk Setup
ICOM IC-SAT100 Satellite Push-to-Talk Radio
When instant communication is critical, traditional radios are limited by range and infrastructure. The ICOM IC-SAT100 removes those barriers by delivering true global push-to-talk communications over the Iridium® satellite network.
Designed for organisations operating beyond the reach of cellular networks and conventional radio systems, the IC-SAT100 enables users to communicate instantly with individuals or entire talkgroups at the press of a button. Whether coordinating emergency response teams, managing remote field operations, supporting utility crews or directing maritime activities, the IC-SAT100 keeps everyone connected wherever the job takes them.
Compare Communication Options
Iridium PTT vs Satellite Phones and Two-Way Radios
Compare Iridium Push-to-Talk with conventional satellite phones and traditional two-way radio systems to find the right solution for your team.
| Capability | Iridium PTT | Satellite Phone | Traditional Two-Way Radio |
|---|---|---|---|
| One-to-many group voice | Yes | No | Yes |
| Global reach | Yes | Yes | No |
| Requires nearby infrastructure | No | No | Usually |
| Private voice calls | Extreme PTT only | Yes | No |
| Configurable geographic groups | Yes | No | Limited |
| Suitable for dispatch operations | Yes | Limited | Yes |
Extend your existing radio network: Iridium PTT can complement or integrate with land-mobile radio systems, helping organisations expand communications into remote areas without building additional terrestrial infrastructure.
Push-to-Talk Applications
Emergency Response
Maritime Operations
Utilities & Infrastructure
Construction & Mining
Security & Government
Expeditions & Research
Frequently Asked Questions
Iridium Push-to-Talk is a satellite-based group communication service that allows one user to speak instantly to multiple authorised team members. It operates over the global Iridium satellite network, providing secure communications in remote areas where cellular and terrestrial radio networks may be unavailable.
A conventional satellite phone is primarily designed for private, one-to-one voice calls. Satellite PTT works more like a long-range two-way radio: press the PTT button and everyone in the selected talkgroup can hear the message. The Iridium Extreme PTT combines both functions, allowing users to switch between group PTT communication and conventional satellite phone services.
Yes. Separate talkgroups can be created for different teams, departments, locations or operational roles. Administrators can assign devices to the appropriate groups through the Iridium PTT Command Center, helping organisations keep communications structured and relevant.
Yes. Team members can participate in the same talkgroup while operating across different regions or countries, provided their devices and required coverage areas have been configured accordingly. Local restrictions may apply to the possession or use of satellite communications equipment in certain countries.
Yes. Vehicle-mounted equipment such as the ICOM IC-SAT100M is specifically designed for mobile installations. The Iridium Extreme PTT and IC-SAT100 can also be used with compatible docking stations, antennas and vehicle accessories to maintain satellite visibility from inside a vehicle.
Yes. Iridium PTT can be integrated with compatible land-mobile radio and IP-based communications systems. This can extend an existing radio network into remote areas without requiring additional terrestrial towers, repeaters or other ground infrastructure. The exact integration equipment required will depend on the existing radio system.
Each device participating in an Iridium PTT network must be activated with compatible PTT service. Airtime options are normally configured around the required devices, talkgroups and geographic coverage areas, with unlimited PTT usage available on OSC’s current monthly plans.
Yes. Authorised administrators can create, edit and reconfigure talkgroups and coverage areas through the web-based Iridium PTT Command Center. This allows a system to be adapted as teams move, projects change or new devices are deployed.
The Iridium Extreme PTT is best for teams that need group PTT alongside satellite calls, SMS, GPS and SOS functionality. The ICOM IC-SAT100 is a purpose-built handheld radio for field users, while the IC-SAT100M is designed for vehicles, buildings, vessels and control-room installations. OSC can help configure a combination of devices around your users and operational environment.
Yes. Iridium PTT equipment needs a clear and unobstructed view of the sky to communicate reliably with the satellite network. Handheld devices should normally be used outdoors, away from buildings, trees and other obstructions. Vehicle-mounted and indoor installations can use a compatible external antenna positioned where it has suitable satellite visibility.
