Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4KB callsign genealogy
Currently held by Schubert, Knut
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 AJ4KB's current licensee, walking backwards.
- Schubert, KnutFLgranted 2008-04-29cancelled 2008-07-24
Successor callsigns
Callsigns held now by people who previously held AJ4KB.
- Schubert, KnutFLgranted 2018-06-16