RockSTAR Professional


The RockSTAR Two-Way Messenger is a truly global communication device and tracking system. It allows you to send and receive short messages from anywhere on Earth with a clear view of the sky. It works far beyond the reach of Wi-Fi and GSM networks.

The unit is waterproof, ruggedized, and built to withstand the most challenging environments.


  • 5-button keypad plus specific 'alert' button

  • Bright OLED screen for information display

  • Full two-way communication system

  • Over-the-air reconfiguration of key parameters

  • USB connection for charging and for data transfer

  • Truly global operation using the Iridium satellite network

  • Long battery life (over 2500 transmissions on a single charge)

  • Bluetooth LE for advanced messaging (requires Bluetooth LE-compatible phone/tablet)

Technical Specification

  • Powered By: Internal battery, rechargeable via USB

  • Battery Life: Up to three weeks transmitting every 15 mins, up to three months transmitting once per hour, up to 12 months transmitting once per day

  • Tracking Options: Various tracking options from every five seconds to 12 hours

  • Alert Options: Red button alert, timer alert, dead man's switch, Temperature (high/low) alert, External power loss

  • Transmits Using: Iridium

  • Size: 144 x 76 x 36mm (plus antenna)

  • Weight: 303 grams

  • Waterproofing: IP-67 (submersion up to 1m for 30 mins)

  • Other Certifications: FCC and CE MIL-810 F/G (ruggedness)

  • Ideal For: Handheld use, personnel etc. Temporary vehicle/yacht mounting using Soft Pouch, Permanent vehicle/yacht mounting using Quick Release Mount


The tracker will wake up on a regular basis, obtain a position using the GPS satellite network, and then transmit that position back to Ground Control HQ in seconds using the Iridium satellite network. The message is relayed to us from Iridium and then we visualize the positions on an easy-to-use web-based viewer.

The RockSTAR also allows short messages (like SMS, social media updates, and short emails) to be sent using a paired Bluetooth device, such as a smartphone, and the Messenger app. This allows for full two-way communication wherever you are, even when out of mobile network range.


What's in the box?

With each RockSTAR unit you will receive:

  • The RockSTAR unit
  • A USB charger
  • A 0.3m USB cable
  • A Quick Start Card.

How does it work?

RockSTAR uses the Iridium satellite network. Specifically, it uses an Iridium service called ‘short burst data’ (SBD). You can see the SBD service plans here. At the heart of RockSTAR is an Iridium 9602 modem.

Can RockSTAR send e-mail or SMS messages?

Yes, you can use the device to send/receive short messages – either using the device itself, with pre-sent messages, or by linking with an iPhone/iPad/Android device to send custom messages

Messages sent from the device itself are always sent to the group of people you nominate in the management system – i.e. any message will be sent to all configured responders; you can’t choose a specific person.

Messages sent via the Bluetooth link (using the Messenger app) can be sent to any destination, via either email address or cell/mobile phone number

In all cases, people can reply to those messages, via e-mail or SMS, and the messages will come back to either the device or the Messenger app respectively.

Does the unit work indoors?

As with all satellite-based devices, the better view of the sky the unit has, the better it will perform.

RockSTAR units use two sets of satellites: GPS satellites in order to get a position fix, and Iridium satellites to transmit that position back to base. The GPS signal is weaker than the Iridium signal.

Typically, if the RockSTAR is near to a window inside then it may be able to obtain a GPS fix and transmit, although it will take longer than normal, and will therefore use more battery power.

If the unit is deep inside a building then it’s unlikely to get a fix or transmit very well, and will therefore use up a lot of battery quite quickly. However, we have had devices transmit successfully from inside caves, fridges, under the seats of cars, and so on – so it is possible, just not guaranteed, and not as reliable as usual.

As a rule, the better view of the sky you can provide for the RockSTAR, the better it will perform and the longer the battery will last.

What's the difference between a RockSTAR and a YB Tracking Yellowbrick/YB3?

RockSTAR units and YB units are both manufactured by Ground Control, and they are identical in terms of hardware.

The difference is in the CORE management system access, which you get as part of the RockSTAR package.