Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N8MGP callsign genealogy
Currently held by KATTERHEINRICH, FRED 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 N8MGP's current licensee, walking backwards.
- Williams, Michael DMIgranted 2025-09-27cancelled 2025-12-09
Successor callsigns
Callsigns held now by people who previously held N8MGP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N8MGP, oldest first.
- KATTERHEINRICH, FRED H OH1990-05-01 → cancelled 2002-05-02
- Williams, Michael D MI2025-12-09 active