Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6SRF callsign genealogy
Currently held by Mills, Allen 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 K6SRF's current licensee, walking backwards.
- Nadir, DanielCAgranted 2022-02-28cancelled 2022-03-18
Successor callsigns
Callsigns held now by people who previously held K6SRF.
- Bretz, NicolasAZgranted 2018-02-23
All historical holders
Every license row we've seen with the callsign K6SRF, oldest first.
- Mills, Allen C CA2003-07-03 → cancelled 2015-09-15
- Bretz, Nicolas CA2017-10-07 → cancelled 2018-02-23
- Nadir, Daniel CA2022-03-18 active