Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC5AZT callsign genealogy
Currently held by BAHR, JOHN 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 KC5AZT's current licensee, walking backwards.
- Bahr, John CCOgranted 2018-05-25cancelled 2022-05-07
Successor callsigns
Callsigns held now by people who previously held KC5AZT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC5AZT, oldest first.
- BAHR, JOHN C CO1999-04-01 → cancelled 2005-06-02
- Bahr, John CO2022-05-07 active