Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9RJR callsign genealogy
Currently held by Rook 874, Robert J
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K9RJR's current licensee, walking backwards.
- Rook, Robert JALgranted 2007-09-18cancelled 2007-11-09
Successor callsigns
Callsigns held now by people who previously held K9RJR.
No current licensee on record previously held this callsign.