Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NH7Z callsign genealogy
Currently held by ROGMANN, PROF DR ACHIM
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 NH7Z's current licensee, walking backwards.
- ROGMANN, ACHIMHIgranted 1993-04-27cancelled 2002-03-28
- AL7NPno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held NH7Z.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NH7Z, oldest first.
- ROGMANN, PROF DR ACHIM HI2022-02-11 active
- TAYAO JR, EDUARDO H— → cancelled 1999-04-22