Confidence: Medium · Source: FCC ULS · As of 2026-09-09
K9NNZ callsign genealogy
Currently held by GRABENHOFER, NANCY S
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 K9NNZ's current licensee, walking backwards.
- GRABENHOFER, NANCY SILgranted 1994-08-23cancelled 2002-10-01
Successor callsigns
Callsigns held now by people who previously held K9NNZ.
No current licensee on record previously held this callsign.