Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9BNR callsign genealogy
Currently held by MAYFIELD, JAMES D
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 KB9BNR's current licensee, walking backwards.
- Mayfield, CrystinaILgranted 2004-07-29cancelled 2004-08-24
Successor callsigns
Callsigns held now by people who previously held KB9BNR.
- MAYFIELD, JAMES DILgranted 2019-09-24
All historical holders
Every license row we've seen with the callsign KB9BNR, oldest first.
- MAYFIELD, JAMES D IL1998-07-23 → cancelled 1999-10-19
- Mayfield, Crystina K IL2024-06-05 active