Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9SPZ callsign genealogy
Currently held by BUETEMEISTER, EARL H
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 W9SPZ's current licensee, walking backwards.
- Buetemeister, Jeff RCAgranted 2022-08-23cancelled 2022-09-13
Successor callsigns
Callsigns held now by people who previously held W9SPZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9SPZ, oldest first.
- BUETEMEISTER, EARL H AZ1993-11-02 → cancelled 2005-11-03
- Buetemeister, Jeff R CA2022-09-13 active