Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9TAO callsign genealogy
Currently held by BAUMEISTER, T JOHN
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 K9TAO's current licensee, walking backwards.
- BAUMEISTER D.O, T JOHNWAgranted 2005-08-09cancelled 2012-06-19
Successor callsigns
Callsigns held now by people who previously held K9TAO.
No current licensee on record previously held this callsign.