Introducing RockBLOCK 9604
RockBLOCK 9604 makes it easy to use Short Burst Data (SBD), Cellular LTE-M and GNSS services with your project. Providing highly-reliable, low-latency 2-way messaging from anywhere on Earth.
The PCB assembly hosts an Iridium 9604 transceiver module. Simplifies the power requirements, and provides a serial interface to your project (USB-C and TTL). RF considerations are taken care of by RockBLOCK 9604's integrated patch antenna, or SMA connector for an external Iridium-9604 qualified antenna.

What's in the box?
We ship you a RockBLOCK, and an activation card that you use to register on Cloudloop. The unit is supplied with two U.FL - U.FL cables (not shown) one of which can be moved to connect the Iridium to the external SMA.
📘 Please Note
Accessories and External Antenna are not included.
Further support.
At present we are not able to provide the full AT command set directly on our documentation site, however, you're very welcome to email our friendly support team at help@groundcontrol.com to request further information.
These documents are intended to provide early access information to interested parties during the development process. Whilst we strive to maintain accuracy, any part of the specification or design of these products may change without notice.
These documents were last reviewed for accuracy on October 12 2026.