Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ1CBF callsign genealogy
Currently held by Stumpf, Janet M
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 KJ1CBF's current licensee, walking backwards.
- Stumpf, Janet MNHgranted 2008-12-30cancelled 2009-01-17
Successor callsigns
Callsigns held now by people who previously held KJ1CBF.
No current licensee on record previously held this callsign.