Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7ZPM callsign genealogy
Currently held by MATHIS IV, FRED D
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 K7ZPM's current licensee, walking backwards.
- Mathis IV, Fred DUTgranted 2020-01-18
Successor callsigns
Callsigns held now by people who previously held K7ZPM.
- Mathis IV, Fred DUTgranted 2020-01-18