Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ4ASR callsign genealogy
Currently held by Redfield, Alan S
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 KZ4ASR's current licensee, walking backwards.
- Redfield, Alan SPAgranted 2021-06-29cancelled 2021-07-20
Successor callsigns
Callsigns held now by people who previously held KZ4ASR.
- Redfield, Alan SPAgranted 2023-05-19