12.5 and 6.25 kHz channels
NXDN
The system number, who called whom, whether the call is enciphered, and the speech where it is not.
NXDN is the Icom and Kenwood narrowband standard, common on business and transport systems, and it fits in half the channel DMR uses. Both channel widths are read.
As with the other digital voice standards, the identities are the part that survives encryption: a radio id and a group id say what the fleet is doing even when the payload does not open.
What comes out
- RAN, the system number
- Source and destination unit id
- Channel width, 12.5 or 6.25 kHz
- Whether the call is enciphered
Speech goes through the AMBE vocoder, so it needs a source build with the ambe feature, as DMR does.
$ waveshark --tune 467.5 --callsRead next
Something did not decode?
Record the burst with --record and open an issue with the capture. A capture that decodes becomes a test fixture.
Open an issue