Also known as: affiliation

Affiliation is the process by which a radio registers with a trunked radio system over the control channel when it powers on or changes talkgroup, so the system can route calls efficiently.¹

Affiliation is a radio registering with the system over the control channel so calls can be routed to it.

How it works

Affiliation messages name the radio ID and talkgroup, giving the control channel a constant stream of information about which units and groups are active.

Relevance to SDR

Affiliation data lets GopherTrunk populate its Radio IDs and activity views even before a call begins, showing who is on the system.

Sources

1. Trunked radio system — Wikipedia, on radio registration/affiliation over the control channel. ↩

See also

• Control channel
• Radio ID
• Talkgroup
• Trunked radio

Learn it step by step

• What is trunked radio?

From the blog

• SDR Internals, Part 11: The trunking engine & event bus