Globalstar ST100 Simplex Modem
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Globalstar ST100 Simplex Modem


Globalstar's ST100 is a low-cost, easily configured, one-way satellite data module suitable for quick development within the IoT market. 

Globalstar ST100 Simplex Modem
$86.80 (Inc. VAT)

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Rapidly develop and deploy new products like never before.


The ST100 is a satellite transmitter providing developers with a low cost, easy to configure, reliable one-way data module.  The device uses Globalstar's satellite network to offer near global coverage.  When integrating the ST100 into your design there will be no need for multiple country service contracts or roaming fees as the subscription costs will be the same anywhere in the world.


Connections, power and antennas

The ST100 offers a serial connector and Bluetooth capabilities while there are options for battery, solar and line power supply configurations.  The module includes an embedded antenna or you can connect an external antenna to suit a varied range of setups.


iOS and Android apps are available for easy configuration of the module.


Although animal tracking was the inspiration behind the ST100 it's small size means it is suitable for many other different applications including asset tracking, sensors, government, remote monitoring, remote workers and first responders.


Tiered pricing available on qty of 1000+.



Developers will be required to complete the Globalstar online certification form and OTA testing process and obtain applicable regulatory approvals before the device will be certified and a unique part number issued.


The ST100 package includes:

  • Globalstar modem
  • Satellite TX and GPS RX combined antenna
  • GPS chip
  • Accelerometer
  • Processor for custom firmware
  • Bluetooth
  • Battery and solar connections
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Plans Standard Plan Light Plan Heavy Plan Unlimited Plan
Minimum Term 1 Month 1 Month 1 Month 1 Month
Activation Fee $30.00 $30.00 $30.00 $30.00
Monthly Fee $12.50 $14.50 $17.50 $30.00
Inclusive Messages 0 250 500 Unlimited
Additional Message Cost $0.05 $0.05 $0.05 $0.05
Monthly Suspension Fee $4.00 $4.00 $4.00 $4.00
Contract Sign Up > Sign Up > Sign Up > Sign Up >


Mapping Plan Name Monthly Plan Annual Plan
OSAT Track Professional Mapping Plan $8.50 / per month $95 / per year



*No roll-over of unused messages is permitted from one billing period to the next.

*Subject to fair usage policy (minimum message transmission frequency every 30 mins)


Dimensions 5.08 x 2.54 cm
Weight 6g
Operating Temperature -22°F to 158°F (-30°C to 70°C)




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