Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7PZI callsign genealogy
Currently held by STEMPF, MICHAEL J
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 KB7PZI's current licensee, walking backwards.
- Stempf, Elaina LMOgranted 2017-09-05cancelled 2017-09-23
Successor callsigns
Callsigns held now by people who previously held KB7PZI.
- STEMPF, MICHAEL JMOgranted 2020-12-29
All historical holders
Every license row we've seen with the callsign KB7PZI, oldest first.
- STEMPF, MICHAEL J MO2002-11-20 → cancelled 2011-03-18
- Stempf, Elaina L MO2017-09-23 active