THE 400 MHz Band has changed

Frequencies that used to be allocated to Differential GPS (DGPS) are now being used by government services like law enforcement and emergency services.

If you operate your DGPS equipment on these frequencies, you could disrupt or prevent these critical public safety services from doing their job.

Do you use Differential GPS (DGPS) equipment in the 400 MHz band? There are some changes that you need to know about
Changes to Differential GPS (PDF)

Do you use or supply equipment which uses Differential GPS (DGPS) technology?
DGPS licensing guide (PDF)

Read and download information about  the Third Party Authorisation Process:

Not sure if you’re operating your DGPS legally?