Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9YRJ callsign genealogy
Currently held by Mann, David W
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 KB9YRJ's current licensee, walking backwards.
- Mann, David WILgranted 1994-09-09cancelled 2001-01-22
Successor callsigns
Callsigns held now by people who previously held KB9YRJ.
- Mann, David WILgranted 2024-07-03