Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KT0Q callsign genealogy
Currently held by BAUER, DAVID C
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 KT0Q's current licensee, walking backwards.
- Mathis, Aaron RNEgranted 2021-03-05cancelled 2021-08-03
Successor callsigns
Callsigns held now by people who previously held KT0Q.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KT0Q, oldest first.
- BAUER, DAVID C MN2009-03-25 → cancelled 2021-06-15
- Mathis, Aaron R NE2021-08-03 active