Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9JCB callsign genealogy
Currently held by Stewart, Lynn 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 K9JCB's current licensee, walking backwards.
- BRADFIELD, JONATHAN CTXgranted 2019-10-07cancelled 2019-11-05
Successor callsigns
Callsigns held now by people who previously held K9JCB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9JCB, oldest first.
- Stewart, Lynn D OH2007-09-11 → cancelled 2019-09-12
- BRADFIELD, JONATHAN C TX2019-11-05 active