Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA1UW callsign genealogy
Currently held by Bielefeld, John E
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 AA1UW's current licensee, walking backwards.
- BIELEFELD, JOHN EMAgranted 1994-12-09cancelled 2000-02-01
Successor callsigns
Callsigns held now by people who previously held AA1UW.
- Bielefeld, John EMAgranted 2020-01-02