Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NH7ZF callsign genealogy
Currently held by Grabowski, Mary K
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 NH7ZF's current licensee, walking backwards.
- Grabowski, Mary KHIgranted 1996-01-17cancelled 2005-09-08
Successor callsigns
Callsigns held now by people who previously held NH7ZF.
No current licensee on record previously held this callsign.