RF specification

The RF specifications for RockBLOCK are listed in the table below. These specifications are not required to use the RockBLOCK, but may be required for some local regulatory equipment approvals.

Frequency Range1616 MHz to 1626.5 MHz
Duplexing MethodTDD (Time Domain Duplex)
Multiplexing MethodTDMA/FDMA
Average Power during Transmit slot (max)1.6W

Selecting an external antenna

You must use an Iridium-approved external antenna. Rock 7 recommends these manufacturers:


Do not use a GPS antenna!

If you are planning a long (>1.5m) cable run between RockBLOCK and the antenna, then you must use a suitable grade of coaxial cable to avoid loss.