Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9ABT callsign genealogy
Currently held by Berger, Michael B
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 K9ABT's current licensee, walking backwards.
- Berger, Michael BWIgranted 2000-10-11cancelled 2000-10-31
Successor callsigns
Callsigns held now by people who previously held K9ABT.
No current licensee on record previously held this callsign.